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ˬ¡ (Cadmium)infofile.pcd.go.th/haz/16-Cadmium.pdf · 2010. 8. 9. · ·§¥‡¡’ˬ¡...

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√Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ “√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ√Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õ—πµ√“¬  “√Õ—πµ πµ√“¬  “√Õ—πµ√“¬ √Õ—πµ√“¬  “√Õ—πµ“√Õπµ√“¬  “√Õπµ ·§¥‡¡’ˬ¡ (Cadmium) °Õß®—¥°“√ “√Õ—πµ√“¬·≈–°“°¢Õ߇ ’¬ °√¡§«∫§ÿ¡¡≈æ‘… °√–∑√«ß«‘∑¬“»“ µ√å ‡∑§‚π‚≈¬’·≈– ‘Ëß·«¥≈âÕ¡
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Page 1: ˬ¡ (Cadmium)infofile.pcd.go.th/haz/16-Cadmium.pdf · 2010. 8. 9. · ·§¥‡¡’ˬ¡ (Cadmium) 1 9 °“√∫àß≈—°…≥–·≈–§ÿ≥ ¡∫—µ‘ (Identification

√Õ—πµ√“¬ “√Õ—πµ√“¬

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·§¥‡¡’ˬ¡(Cadmium)

°Õß®—¥°“√ “√Õ—πµ√“¬·≈–°“°¢Õ߇ ’¬

°√¡§«∫§ÿ¡¡≈æ‘…

°√–∑√«ß«‘∑¬“»“ µ√å ‡∑§‚π‚≈¬’·≈– ‘Ëß·«¥≈âÕ¡

Page 2: ˬ¡ (Cadmium)infofile.pcd.go.th/haz/16-Cadmium.pdf · 2010. 8. 9. · ·§¥‡¡’ˬ¡ (Cadmium) 1 9 °“√∫àß≈—°…≥–·≈–§ÿ≥ ¡∫—µ‘ (Identification

·§¥‡¡’ˬ¡

(Cadmium)

‡®â“¢Õß °√¡§«∫§ÿ¡¡≈æ‘…°√–∑√«ß«‘∑¬“»“ µ√å ‡∑§‚π‚≈¬’·≈– ‘Ëß·«¥≈âÕ¡

æ‘¡æ凡◊ËÕ µÿ≈“§¡ 2541(æ‘¡æå§√—Èß∑’Ë 2)

ºŸâ‡¢’¬π/‡√’¬∫‡√’¬ß ΩÉ“¬®—¥°“√ “√æ‘…°Õß¡“µ√∞“π§ÿ≥¿“æ ‘Ëß·«¥≈âÕ¡ ”π—°ß“π§≥–°√√¡°“√ ‘Ëß·«¥≈âÕ¡·Ààß™“µ‘

®—¥æ‘¡æ出¬·æ√à‚¥¬ ΩÉ“¬»Ÿπ¬å¢âÕ¡Ÿ≈ “√Õ—πµ√“¬·≈–Õπÿ —≠≠“°Õß®—¥°“√ “√Õ—πµ√“¬·≈–°“°¢Õ߇ ’¬°√¡§«∫§ÿ¡¡≈æ‘…404 Õ“§“√æÀ≈‚¬∏‘π‡´Áπ‡µÕ√å ™—Èπ 6∂ππæÀ≈‚¬∏‘π ·¢«ß “¡‡ π„π ‡¢µæ≠“‰∑ °√ÿ߇∑æœ 10400‚∑√»—æ∑å 6192200, 6192300-04‚∑√ “√ 6192297

ÕÕ°·∫∫·≈–®—¥æ‘¡æå ∫√‘…—∑ Õ‘π∑‘‡°√‡µÁ¥ ‚ª√‚¡™—π ‡∑§‚π‚≈¬’ ®”°—¥‚∑√»—æ∑å 5852076, 5860837 ‚∑√ “√ 9137763

(°√¡§«∫§ÿ¡¡≈æ‘…‡ªìπ‡®â“¢Õß°√√¡ ‘∑∏‘Ï·≈–¡’≈‘¢ ‘∑∏‘Ï„π‡Õ° “√©∫—∫π’È)

Page 3: ˬ¡ (Cadmium)infofile.pcd.go.th/haz/16-Cadmium.pdf · 2010. 8. 9. · ·§¥‡¡’ˬ¡ (Cadmium) 1 9 °“√∫àß≈—°…≥–·≈–§ÿ≥ ¡∫—µ‘ (Identification

§”π”

„πªí®®ÿ∫—π “√‡§¡’®”π«π¡“°‡¢â“¡“¡’∫∑∫“∑ ”§—≠µàÕ°“√¥”√ß™’«‘µª√–®”«—π¢Õß¡πÿ…¬å„π¥â“πµà“ßÊ ‡™àπ „™â‡ªìπ à«πª√–°Õ∫À√◊Õª√ÿß·µàßÕ“À“√ ¬“√—°…“‚√§‡§√◊ËÕß ”Õ“ß „™â‡ªìπ “√‡§¡’ªÑÕß°—π°”®—¥»—µ√Ÿæ◊™·≈– —µ«å ·≈–„™â„π°√–∫«π°“√º≈‘µ∑“ߥâ“πÕÿµ “À°√√¡ “√‡§¡’™π‘¥µà“ßÊ ∑’Ë¡πÿ…¬åπ”¡“„™âª√–‚¬™πå‡À≈à“π’È ‰¥â‡¢â“¡“ªπ‡ªóôÕπÕ¬Ÿà„π ¿“æ·«¥≈âÕ¡·≈–‡¢â“ Ÿà√à“ß°“¬¡πÿ…¬å √«¡∑——Èß∑”„Àâ ¿“æ·«¥≈âÕ¡·≈– ÿ¢¿“æ‡ ◊ËÕ¡‚∑√¡≈ß

°“√ªÑÕß°—π·≈–·°â‰¢ªí≠À“¥—ß°≈à“« ®”‡ªìπµâÕß∑√“∫¢âÕ¡Ÿ≈‡°’ˬ«°—∫ “√‡§¡’π—ÈπÊ®÷߉¥â√«∫√«¡¢âÕ¡Ÿ≈ “√‡§¡’∑—Èß„π¥â“π§ÿ≥ ¡∫—µ‘ °√√¡«‘∏’°“√º≈‘µ °“√„™â ∑“߇¢â“ Ÿà ‘Ëß·«¥≈âÕ¡ §«“¡‡¢â¡¢âπ °“√∑¥ Õ∫§«“¡‡ªìπ‰ª„π ‘Ëß·«¥≈âÕ¡ °“√·æ√à ≈“¬ §«“¡‡ªìπæ‘… º≈µàÕ ‘Ëß¡’™’«‘µ„π ‘Ëß·«¥≈âÕ¡ °“√‡°Á∫µ—«Õ¬à“ß °“√‡µ√’¬¡·≈–°“√«‘‡§√“–Àå°“√À°√¥ °“√∫”∫—¥‡¡◊ËÕ‡°‘¥æ‘… °“√®—¥°“√°“°¢Õ߇ ’¬ µ≈Õ¥®π¢âÕ‡ πÕ·π–·≈–°≈‰°∑“ß°ÆÀ¡“¬ ∑—Èßπ’ȇæ◊ËÕ‡ªìπª√–‚¬™πåµàÕ°“√®—¥°“√ “√‡§¡’Õ¬à“ß∂Ÿ°µâÕß·≈–ª≈Õ¥¿—¬

‡Õ° “√‡º¬·æ√à∑“ß«‘™“°“√‡≈à¡π’È ‡ªìπ°“√®—¥æ‘¡æå§√—Èß∑’Ë 2 ‰¥âª√—∫ª√ÿß·≈–‡æ‘Ë¡‡µ‘¡‡π◊ÈÕÀ“ “√–∫“ßÀ—«¢âÕ„Àâ∑—π ¡—¬¬‘Ëߢ÷Èπ ·≈–À«—߇ªìπÕ¬à“߬‘Ëß«à“®–‡ªìπª√–‚¬™πåµàÕπ—°«‘™“°“√·≈–ºŸâ π„®∑—Ë«‰ª

°Õß®—¥°“√ “√Õ—πµ√“¬·≈–°“°¢Õ߇ ’¬

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Page 4: ˬ¡ (Cadmium)infofile.pcd.go.th/haz/16-Cadmium.pdf · 2010. 8. 9. · ·§¥‡¡’ˬ¡ (Cadmium) 1 9 °“√∫àß≈—°…≥–·≈–§ÿ≥ ¡∫—µ‘ (Identification

“√∫—≠

Àπâ“

1. °“√∫àß≈—°…≥–·≈–§ÿ≥ ¡∫—µ‘ 9

1.1 °“√∫àß≈—°…≥– 9

1.2 §ÿ≥ ¡∫—µ‘∑“ß°“¬¿“æ·≈–∑“߇§¡’ 9

1.3 °“√®”·π°Õ—πµ√“¬ 20

2. °“√º≈‘µ·≈–°“√§â“ 23

3. °√√¡«‘∏’°“√º≈‘µ 24

4. °“√„™â 26

4.1 „™âº ¡°—∫‚≈À–Õ◊Ëπ‡ªìπ‚≈À–º ¡ 26

4.2 „™â„π°“√™ÿ∫‚≈À– 26

4.3 „™â‡ªìπ‡¡Á¥ ’„π°‘®°“√Õÿµ “À°√√¡ 26

4.4 „™âº≈‘µ·∫µ‡µÕ√’Ë 26

4.5 „™â„π°‘®°“√Õ◊ËπÊ 26

5. ∑“߇¢â“ Ÿà ‘Ëß·«¥≈âÕ¡ 28

5.1 ®“°Õÿµ “À°√√¡µ–°—Ë«·≈– —ß°– ’ 28

5.2 ®“°‚√ßß“π™ÿ∫‚≈À–·§¥‡¡’ˬ¡ 28

5.3 ®“° primary iron and steel industry ·≈– 28secondary non-ferous metal industry

5.4 ®“°°“√‡º“¢Õ߇ ’¬ 28

5.5 ®“°¬“ß√∂¬πµå∑’Ë ÷°À√Õ 28

5.6 ®“°ªÿܬøÕ ‡øµ 28

5.7 ®“°°“√„™â∂à“πÀ‘π ·≈– heating oil 28

5.8 ®“°°“°µ–°Õπ¢ÕßπÈ”∑‘Èß 29

5.9 ®“°°“√ ÷°°√àÕπ¢Õß —ß°– ’ 29

Page 5: ˬ¡ (Cadmium)infofile.pcd.go.th/haz/16-Cadmium.pdf · 2010. 8. 9. · ·§¥‡¡’ˬ¡ (Cadmium) 1 9 °“√∫àß≈—°…≥–·≈–§ÿ≥ ¡∫—µ‘ (Identification

Àπâ“

5.10 ¬“ Ÿ∫ 29

6. §«“¡‡¢â¡¢âπ„π ‘Ëß·«¥≈âÕ¡ 30

6.1 „π∫√√¬“°“» 30

6.2 „π ¿“æ·«¥≈âÕ¡°“√∑”ß“π 30

6.3 „π·À≈àßπÈ” 30

6.4 „πµ–°Õπ¥‘π 32

6.5 „ππÈ”¥◊Ë¡ 32

6.6 „π¢â“« 32

6.7 „πÕ“À“√ 32

7. °“√∑¥ Õ∫§«“¡‡ªìπ‰ª„π ‘Ëß·«¥≈âÕ¡ 33

7.1 °“√·µ°µ—«∑”ªØ‘°‘√‘¬“°—∫πÈ” 33

7.2 °“√√«¡µ—« 33

7.3 °“√√–‡À¬‡ªìπ‰Õ 35

7.4 °“√‡ª≈’Ë¬π‰ª‚¥¬ªØ‘°‘√‘¬“¢ÕßÕÕ°´‘‡®π 35

8. §«“¡‡ªìπ‰ª„π ‘Ëß·«¥≈âÕ¡ 36

9. °“√·æ√à ≈“¬¢Õß “√‡§¡’‚¥¬™’««‘∏’ 37

9.1 °“√¥Ÿ¥´÷¡ 37

9.2 °“√·æ√à°√–®“¬ 37

9.3 Õ—µ√“°“√ – ¡ 37

9.4 °“√¢—∫∂à“¬ 38

10. §«“¡‡ªìπæ‘…∑’Ë¡’µàÕ —µ«å‡≈’Ȭß≈Ÿ°¥â«¬π¡ 40

11. §«“¡‡ªìπæ‘… 47

11.1 §«“¡‡ªìπæ‘…·∫∫‡©’¬∫æ≈—π 47

11.2 §«“¡‡ªìπæ‘…·∫∫‡√◊ÈÕ√—ß 49

12. °“√»÷°…“§«“¡‡ªìπæ‘…‡©æ“–¥â“π 52

12.1 §«“¡‡ªìπæ‘…∑’Ë¡’º≈®“°ªØ‘°‘√‘¬“™’«‡§¡’„π√à“ß°“¬ 52

Page 6: ˬ¡ (Cadmium)infofile.pcd.go.th/haz/16-Cadmium.pdf · 2010. 8. 9. · ·§¥‡¡’ˬ¡ (Cadmium) 1 9 °“√∫àß≈—°…≥–·≈–§ÿ≥ ¡∫—µ‘ (Identification

Àπâ“

12.2 °“√‡ªìπ “√∑’Ë°àÕ‡°‘¥¡–‡√Áß 53

12.3 °“√‡ªìπ “√∑’Ë°àÕ‡°‘¥°“√°≈“¬æ—π∏ÿå 54

12.4 §«“¡‡ªìπæ‘…µàÕ√–∫∫ª√– “∑ 54

12.5 §«“¡º‘¥ª°µ‘µàÕ°“√ ◊∫æ—π∏ÿå 54

12.6 §«“¡º‘¥ª°µ‘∑’ˇ°‘¥„π∑“√° 56

12.7 °“√‡ √‘¡æ‘…/°“√µàÕµâ“πæ‘… 58

13. °“√«‘‡§√“–Àå 59

13.1 Dithizone Methods 59

13.2 Emission Spectroscropy À√◊Õ Spectrography 59

13.3 Neutron Activation 59

13.4 Atomic Absorption Spectrophotometry 59

14. °“√À°√¥ 60

15. °“√∫”∫—¥‡¡◊ËÕ‡°‘¥æ‘… 61

15.1 °“√∫”∫—¥‡¡◊ËÕ‡°‘¥æ‘…‡©’¬∫æ≈—π 61

15.2 °“√∫”∫—¥√—°…“‡¡◊ËÕ‡°‘¥æ‘…·∫∫‡√◊ÈÕ√—ß 62

16. °“√®—¥°“√¢Õ߇ ’¬ 63

16.1 ¢Õ߇ ’¬∑’ˇªìπ¢Õß·¢Áß 63

16.2 ¢Õ߇ ’¬∑’ˇªìπ¢Õ߇À≈« 63

16.3 Õ“°“»‡ ’¬ 65

16.4 ¥‘π∑’˪π‡ªóôÕπ¥â«¬·§¥‡¡’ˬ¡ 65

17. ¢âÕ‡ πÕ·π–·≈–°≈‰°∑“ß°ÆÀ¡“¬ 66

17.1 ¡“µ√°“√§«∫§ÿ¡¿“¬„πª√–‡∑» 66

17.2 ¡“µ√°“√§«∫§ÿ¡¢Õßµà“ߪ√–‡∑» 68

‡Õ° “√ª√–°Õ∫°“√‡√’¬∫‡√’¬ß 78

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“√∫—≠µ“√“ß

Àπâ“

µ“√“ß∑’Ë 1 §ÿ≥ ¡∫—µ‘∑“ß°“¬¿“æ·≈–∑“߇§¡’¢Õß·§¥‡¡’ˬ¡ 11·≈– “√ª√–°Õ∫·§¥‡¡’ˬ¡

µ“√“ß∑’Ë 2 Õ—πµ√“¬¢Õß “√ª√–°Õ∫·§¥‡¡’ˬ¡ 20

µ“√“ß∑’Ë 3 ª√‘¡“≥·§¥‡¡’ˬ¡„π·À≈àßπÈ” 31

µ“√“ß∑’Ë 4 ª√‘¡“≥·§¥‡¡’ˬ¡„π¢â“«∑—Ë«ª√–‡∑» 32

µ“√“ß∑’Ë 5 ª√‘¡“≥·§¥‡¡’ˬ¡∑’ËÕÕ° Ÿà ‘Ëß·«¥≈âÕ¡ 36

µ“√“ß∑’Ë 6 §à“ Bioconcentration Factors ”À√—∫·§¥‡¡’ˬ¡ 38

µ“√“ß∑’Ë 7 §«“¡‡ªìπæ‘…µàÕ —µ«å‡≈’Ȭß≈Ÿ°¥â«¬π¡‡π◊ËÕß®“° 41cadmium chloride

µ“√“ß∑’Ë 8 §«“¡‡ªìπæ‘…µàÕ —µ«å‡≈’Ȭß≈Ÿ°¥â«¬π¡®“°°“√À“¬„® 44cadmium chloride

µ“√“ß∑’Ë 9 §à“ LD50 ¢Õß “√ª√–°Õ∫·§¥‡¡’ˬ¡ 45

µ“√“ß∑’Ë 10 §«“¡‡ªìπæ‘…·∫∫‡©’¬∫æ≈—π¢Õß·§¥‡¡’ˬ¡∑’Ë¡’µàÕ¡πÿ…¬å‚¥¬°“√°‘π 47

µ“√“ß∑’Ë 11 §«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’Ë∑”„À⇰‘¥æ‘…‡©’¬∫æ≈—π 48µàÕ —µ«å∑¥≈Õß‚¥¬°“√À“¬„®

µ“√“ß∑’Ë 12 ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’Ë∑”„Àâ¡πÿ…¬å∂÷ß·°à™’«‘µ 49(lethal concentration)

µ“√“ß∑’Ë 13 °“√»÷°…“§«“¡º‘¥ª°µ‘µàÕ°“√ ◊∫æ—π∏ÿå„π —µ«å∑¥≈Õß®“°°“√©’¥ 55cadmium chloride ‡¢â“„µâº‘«Àπ—ß

µ“√“ß∑’Ë 14 º≈°“√»÷°…“„π‡√◊ËÕߧ«“¡º‘¥ª°µ‘∑’ˇ°‘¥„π∑“√°‡π◊ËÕß®“° 57cadmium chloride

µ“√“ß∑’Ë 15 °“√‡ √‘¡æ‘…/°“√µàÕµâ“πæ‘…„π —µ«å∑¥≈Õß 58

µ“√“ß∑’Ë 16 ¡“µ√∞“ππÈ”¥◊Ë¡¢Õߪ√–‡∑»‰∑¬ 67

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Àπâ“

µ“√“ß∑’Ë 17 ¡“µ√∞“πª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡„π ∂“πª√–°Õ∫°“√ 69¢Õßµà“ߪ√–‡∑»

µ“√“ß∑’Ë 18 ¡“µ√∞“ππÈ”¥◊Ë¡¢Õßµà“ߪ√–‡∑» 71

µ“√“ß∑’Ë 19 ¡“µ√∞“π·À≈àßπÈ”¢Õߪ√–‡∑»µà“ßÊ 73

µ“√“ß∑’Ë 20 ¡“µ√∞“πÕ“À“√¢Õß·µà≈–ª√–‡∑» 75

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·§¥‡¡’ˬ¡ (Cadmium) 9

1°“√∫àß≈—°…≥–·≈–§ÿ≥ ¡∫—µ‘(Identification and properties)

1.1 °“√∫àß≈—°…≥– (identification)

·§¥‡¡’ˬ¡‡ªìπ∏“µÿ∑’ËÕ¬Ÿà„π°≈ÿà¡ II b ¢Õßµ“√“ßæ’√‘ÕÕ¥‘§ (periodic tableof elements) ‡™àπ‡¥’¬«°—∫ —ß°– ’·≈–ª√Õ∑ ·≈–‡ªìπ‚≈À–Àπ—°∑’Ë¡’ ’‡ß‘π·°¡¢“« ´÷Ëß¡’

Õ–µÕ¡¡‘§π—¡‡∫Õ√å (atomic number) : 48

πÈ”Àπ—°Õ–µÕ¡ (atomic weight) : 112.40

1.2 §ÿ≥ ¡∫—µ‘∑“ß°“¬¿“æ·≈–∑“߇§¡’ (physical and chemical

properties)

·§¥‡¡’ˬ¡‡ªìπ‚≈À–∑’Ë¡’§ÿ≥ ¡∫—µ‘‡∫“ ÕàÕπ ¥—¥ßÕ‰¥âßà“¬ ·≈–∑πµàÕ°“√°—¥°√àÕπ ¡’§«“¡∂à«ß®”‡æ“– (specific gravity) 8.65 ®ÿ¥À≈Õ¡≈–≈“¬ (meltingpoint) 320.9 ÌC ®ÿ¥‡¥◊Õ¥ (boiling point) 767 ÌC

§«“¡¥—π‰Õ¢Õß·§¥‡¡’ˬ¡ (vapor pressure) ¡’§à“ 1.4 mm ∑’Ë 400 ÌC·≈– 16 mm ∑’Ë 500 ÌC ¥—ßπ—Èπ„π°√–∫«π°“√∑’Ë„™â§«“¡√âÕπ Ÿß ‡™àπ °“√Õ∫·√à °“√∫—¥°√’°“√À≈Õ¡‡»…‡À≈Á° ·≈–°“√‡º“¢Õ߇ ’¬ (incineration) ®–∑”„Àâ¡’‰Õ¢Õß·§¥‡¡’ˬ¡ÕÕ°¡“‰¥â„π√–À«à“ß°√–∫«π°“√ ·≈–‰Õ¢Õß·§¥‡¡’ˬ¡„πÕ“°“»®–∂Ÿ°ÕÕ°´‘‰¥´åÕ¬à“ß√«¥‡√Á«‰ª‡ªìπ cadmium oxide

·§¥‡¡’ˬ¡‡ªìπ∏“µÿ∑’ˉ¡à≈–≈“¬πÈ” ·µà≈–≈“¬‰¥â¥’„π nitric acid ·≈–≈–≈“¬‰¥â„π hydrochloric acid Õ¬à“ß™â“Ê

·§¥‡¡’ˬ¡®–≈–≈“¬‰¥â„π°√¥ÕàÕπ ®“°§ÿ≥ ¡∫—µ‘¢âÕπ’È ·§¥‡¡’ˬ¡®÷߇ªìπÕ—πµ√“¬µàÕ§π·∫∫‡©’¬∫æ≈—π‡¡◊ËÕ°‘π‡¢â“‰ª

“√ª√–°Õ∫¢Õß·§¥‡¡’ˬ¡ ‡™àπ cadmium sulfate (CdSO4), cadmiumchloride (CdCl2) ·≈– cadmium nitrate Cd(NO3)2 ‡ªìπ “√ª√–°Õ∫∑’ˉ¡à¡’ ’·≈–≈–≈“¬‰¥â¥’„ππÈ” πÕ°®“°π’È·§¥‡¡’ˬ¡ “¡“√∂√«¡°—∫ “√Õ◊ËπÊ ‡ªìπ “√ª√–°Õ∫‡™‘ß´âÕπ∑’Ë≈–≈“¬πÈ”‰¥â ‚¥¬‡©æ“–‡¡◊ËÕ√«¡°—∫ cyanides ·≈– amines

alkyl-cadmium compounds ‡ªìπ “√ª√–°Õ∫∑’ˉ¡à§ßµ—« (unstable) ‰¡à‡À¡◊Õπ°—∫ “√ª√–°Õ∫°≈ÿà¡ alkyl-mercury °≈à“«§◊Õ alkyl-cadmium compounds

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10 “√Õ—πµ√“¬

®–∑”ªØ‘°‘√‘¬“Õ¬à“ß√«¥‡√Á«°—∫πÈ”À√◊Õ‰ÕπÈ”„πÕ“°“»

§ÿ≥ ¡∫—µ‘∑“ß°“¬¿“æ·≈–∑“߇§¡’¢Õß·§¥‡¡’ˬ¡·≈– “√ª√–°Õ∫·§¥‡¡’ˬ¡∑’Ë ”§—≠Ê · ¥ß‰«â„πµ“√“ß∑’Ë 1

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ᤴ

‡¡’ˬ¡ (Cadm

ium)

11

µ“√“ß∑’Ë 1 §ÿ≥ ¡∫—µ‘∑“ß°“¬¿“æ·≈–∑“߇§¡’¢Õß·§¥‡¡’ˬ¡·≈– “√ª√–°Õ∫·§¥‡¡’ˬ¡

“√ Ÿµ√∑“ß πÈ”Àπ—°Õ–µÕ¡

∂“π¿“槫“¡∂à«ß ®ÿ¥À≈Õ¡- ®ÿ¥‡¥◊Õ¥

°“√≈–≈“¬‡§¡’ À√◊Õ‚¡‡≈°ÿ≈ ®”‡æ“– ≈–≈“¬ ( ÌC) ( ÌC)

Cadmium Cd 112.4 ‡ªìπºß ’‡ß‘π·°¡ 8.642 321 767 ± 2 ‰¡à≈–≈“¬„ππÈ”‡¬Áπ·≈–πÈ”√âÕπ¢“« À√◊Õ ’‡∑“ ≈–≈“¬„π·Õ¡‚¡‡π’¬¡‰π‡µ√∑

(NH4NO3) ·≈–≈–≈“¬„π°√¥´—≈øŸ√‘§∑’Ë√âÕπ

Cadmium oxide CdO 128.41 ‡ªìπºß ’πÈ”µ“≈ 6.95 > 1230 1559 ‰¡à≈–≈“¬∑—Èß„ππÈ”√âÕπ·≈–πÈ”‡¬Áπ·¥ß ≈–≈“¬‰¥â„π “√≈–≈“¬‡°≈◊Õ

·Õ¡‚¡‡π’¬ ‰¡à≈–≈“¬„π¥à“ß

Cadmium chloride CdCl2 183.32 ‡ªìπº≈÷°‰¡à¡’ ’ 4.047 568 960 ≈–≈“¬„ππÈ” 1.4 kg/l (20 ÌC)(25 ÌC) ·≈– 1.5 kg/l (100 ÌC) ≈–≈“¬

„π·Õ≈°ÕŒÕ≈å 15.2 g/l ‰¡à≈–≈“¬„πÕ–´’‚µπ·≈–Õ’‡∑Õ√å

Cadmium nitrate Cd(NO3)2 236.43 ‡ªìπº≈÷°√Ÿª‡¢Á¡ - 350 - ≈–≈“¬„ππÈ” 1.09 kg/l (0 ÌC) ’¢“« ·≈– 3.26 kg/l (60 ÌC) ≈–≈“¬

„πÕ’‡∑Õ√å·≈–Õ–´’‚µπ

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12

“√Õ

—πµ

√“¬µ“√“ß∑’Ë 1 (µàÕ)

“√ Ÿµ√∑“ß πÈ”Àπ—°Õ–µÕ¡

∂“π¿“槫“¡∂à«ß ®ÿ¥À≈Õ¡- ®ÿ¥‡¥◊Õ¥

°“√≈–≈“¬‡§¡’ À√◊Õ‚¡‡≈°ÿ≈ ®”‡æ“– ≈–≈“¬ ( ÌC) ( ÌC)

Cadmium sulfide CdS 144.48 ‡ªìπº≈÷° ’‡À≈◊Õß- 4.82 1750 - ≈–≈“¬„ππÈ” 1.3 mg/l ·≈–®–(greenockite) â¡ (∑’Ë 100 atm) ·¢«π≈Õ¬Õ¬Ÿà„ππÈ”√âÕπ ≈–≈“¬‰¥â

‡≈Á°πâÕ¬ NH4OH ≈–≈“¬„π°√¥

Cadmium acetate Cd(C2H2O2)2 230.5 º≈÷°‰¡à¡’ ’ ¡’°≈‘Ëπ 2.341 256 dec1/ ≈–≈“¬‰¥â¥’„ππÈ”§≈⓬πÈ” â¡ “¬™Ÿ

Cadmium amide Cd(NH2)2 144.46 ¢Õß·¢Áß ’¢“« 3.05 120 - -(∑’Ë 25 ÌC) (dec)1/

Cadmium CdBr2.4NH4Br 664.0 º≈÷°‰¡à¡’ ’ - - - -amonium bromide(amonium cadmiumbromide)

Cadmium arsenide Cd3As2 487.05 º≈÷° ’ˇÀ≈’ˬ¡ 6.21 721 - - ’‡∑“¥”

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ᤴ

‡¡’ˬ¡ (Cadm

ium)

13

µ“√“ß∑’Ë 1 (µàÕ)

“√ Ÿµ√∑“ß πÈ”Àπ—°Õ–µÕ¡

∂“π¿“槫“¡∂à«ß ®ÿ¥À≈Õ¡- ®ÿ¥‡¥◊Õ¥

°“√≈–≈“¬‡§¡’ À√◊Õ‚¡‡≈°ÿ≈ ®”‡æ“– ≈–≈“¬ ( ÌC) ( ÌC)

Cadmium azide Cd(N3)2 196.5 - - - - -

Cadmium benzoate Cd(C7H5O2)2. 390.66 ¢Õß·¢Áß ’¢“« - - - -2H2O

Cadmium Cd5(BW12O40)2. 6602.06 º≈÷° ’‡À≈◊Õß - 75 - -borotungstate 18H2O

Cadmium bromate Cd(BrO3)2.H2O 386.26 º≈÷° ’¢“« 3.758 dec1/ - -

Cadmium bromide CdBr2 272.24 º≈÷° ’‡À≈◊Õß 5.192 567 863 -(25 ÌC)

Cadmium carbonate CdCO3 172.42 º≈÷° ’¢“« 4.258 < 500 - -(4 ÌC) dec1/

Cadmium chlorate Cd(ClO3)2. 315.36 º≈÷°‰¡à¡’ ’ 2.28 80 - -2H2O (18 ÌC)

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14

“√Õ

—πµ

√“¬µ“√“ß∑’Ë 1 (µàÕ)

“√ Ÿµ√∑“ß πÈ”Àπ—°Õ–µÕ¡

∂“π¿“槫“¡∂à«ß ®ÿ¥À≈Õ¡- ®ÿ¥‡¥◊Õ¥

°“√≈–≈“¬‡§¡’ À√◊Õ‚¡‡≈°ÿ≈ ®”‡æ“– ≈–≈“¬ ( ÌC) ( ÌC)

Cadmium cyanide Cd(CN)2 164.45 º≈÷° 2.226 >200 - -

Cadmium Cd(H2PO4)2 342.4 º≈÷°√Ÿª “¡‡À≈’ˬ¡ 2.74 100 - -dihydrogen 2H2O dec1/

phosphate

Cadmium fluogallate (Cd(H2O)6) - º≈÷°‰¡à¡’ ’ 2.79 110 - -(GaF5H2O)

Cadmium fluoride CdF2 150.41 º≈÷° ’ˇÀ≈’ˬ¡ ’¢“« 6.64 1100 1758 -

Cadmium CdSiF6.6H2O 362.6 º≈÷°À°‡À≈’ˬ¡ - - - -fluosilicate ‰¡à¡’ ’

Cadmium formate Cd(CHO2)2. 238.48 º≈÷° 2.44 dec1/ - -2H2O

Cadmium fumarate CdC4H2O4 226.47 ¢Õß·¢Áß - - - -

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ᤴ

‡¡’ˬ¡ (Cadm

ium)

15

µ“√“ß∑’Ë 1 (µàÕ)

“√ Ÿµ√∑“ß πÈ”Àπ—°Õ–µÕ¡

∂“π¿“槫“¡∂à«ß ®ÿ¥À≈Õ¡- ®ÿ¥‡¥◊Õ¥

°“√≈–≈“¬‡§¡’ À√◊Õ‚¡‡≈°ÿ≈ ®”‡æ“– ≈–≈“¬ ( ÌC) ( ÌC)

Cadmium Cd(NH3)6 381.4 - - - - -hexammine chlorate (ClO3)2

Cadmium Cd(NH3)6 403 - - - - -hexammine (ClO4)2perchlorate

Cadmium CdHAsO4H2O 270.34 ¢Õß·¢Áß 4.164 - - -hydroxide arsenate

Cadmium hydroxide Cd(OH)2 146.43 º≈÷° ’¢“« 4.79 300 - ‰¡à≈–≈“¬πÈ”(15 ÌC) dec1/

Cadmium iodate Cd(IO3)2 462.25 º≈÷° ’¢“« 6.43 dec1/ - -

Cadmium iodide CdI2 366.25 º≈÷°À°‡À≈’ˬ¡ 5.67 385 796 - ’πÈ”µ“≈ÕàÕπ (30 ÌC)

Cadmium lactate Cd(C3H5O3)2 290.56 º≈÷°√Ÿª‡¢Á¡ - - - -

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16

“√Õ

—πµ

√“¬µ“√“ß∑’Ë 1 (µàÕ)

“√ Ÿµ√∑“ß πÈ”Àπ—°Õ–µÕ¡

∂“π¿“槫“¡∂à«ß ®ÿ¥À≈Õ¡- ®ÿ¥‡¥◊Õ¥

°“√≈–≈“¬‡§¡’ À√◊Õ‚¡‡≈°ÿ≈ ®”‡æ“– ≈–≈“¬ ( ÌC) ( ÌC)

Cadmium maleate CdC4H2O4. 262.5 ¢Õß·¢Áß - - - -2H2O

Cadmium molydate CdMoO4 272.36 ¢Õß·¢Áß 5.347 - - -

Cadmium nitride Cd3N2 365.2 - - - - -

Cadmium Cd3(Co 1007.21 º≈÷° ’‡À≈◊Õß 175 - - -nitrocobaltate (NO2)6)2 dec1/

(Cadmiumcobaltinitrite)

Cadmium oxalate CdC2O4 200.43 º≈÷°‰¡à¡’ ’ 3.32 340 - -(18/4 ÌC) dec1/

Cadmium Cd(ClO4)2. 419.9 º≈÷° - 129.4 - -perchlorate 6H2O

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‡¡’ˬ¡ (Cadm

ium)

17

µ“√“ß∑’Ë 1 (µàÕ)

“√ Ÿµ√∑“ß πÈ”Àπ—°Õ–µÕ¡

∂“π¿“槫“¡∂à«ß ®ÿ¥À≈Õ¡- ®ÿ¥‡¥◊Õ¥

°“√≈–≈“¬‡§¡’ À√◊Õ‚¡‡≈°ÿ≈ ®”‡æ“– ≈–≈“¬ ( ÌC) ( ÌC)

Cadmium Cd(MnO4)2. 458.4 º≈÷° ’¡à«ß 2.81 95 - -permanganate 6H2O dec1/

Cadmium Cd3(PO4)2 527.19 º≈÷°‰¡à¡’ ’ - 1500 - -phosphate

Cadmium picrate Cd(C6H2 - ¢Õß·¢Áß ’‡À≈◊Õß - - - -(NO2)3OH)2

Cadmium Cd(CN)2. 294.67 º≈÷° ’ˇÀ≈’ˬ¡ - - - ≈–≈“¬‰¥â„ππÈ”‡¬Áπ·≈–πÈ”√âÕπpotassium cyanide 2KCN ‰¡à≈–≈“¬„π·Õ≈°ÕŒÕ≈å

Cadmium Cd(C18H33O3)2 706.5 ºß≈–‡Õ’¬¥ ’¢“« 1.11 103 - -ricinoleate (25 ÌC)

Cadmium salicylate Cd(C7H5O3)2. 404.65 º≈÷°√Ÿª‡¢Á¡ ’¢“« - - - -H2O

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18

“√Õ

—πµ

√“¬µ“√“ß∑’Ë 1 (µàÕ)

“√ Ÿµ√∑“ß πÈ”Àπ—°Õ–µÕ¡

∂“π¿“槫“¡∂à«ß ®ÿ¥À≈Õ¡- ®ÿ¥‡¥◊Õ¥

°“√≈–≈“¬‡§¡’ À√◊Õ‚¡‡≈°ÿ≈ ®”‡æ“– ≈–≈“¬ ( ÌC) ( ÌC)

Cadmium selenate, CdSeO4. 291.40 º≈÷° 3.632 100 - -dihydrate 2H2O

Cadmium selenide CdSe 191.37 ºß ’·¥ßÀ√◊Õ ’‡∑“ 5.81 > 1350 - -®π∂÷ßπÈ”µ“≈ (15/4 ÌC)

Cadmium-m-silicate CdSiO3 188.47 º≈÷°‰¡à¡’ ’ 4.93 1242 - -

Cadmium succinate C4H6O4.Cd 230.5 - - - - -

Cadmium sulfate CdSO4 208.5 º≈÷° ’¢“« 4.691 1000 - -

Cadmium sulfate CdSO4.4H2O 280.5 - - - - -tetrahydrate

Cadmium sulfite CdSO3 192.48 º≈÷° - dec1/ - -

Cadmium tartrate CdC4H4O6 260.48 ºß ’¢“« - - - -

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ᤴ

‡¡’ˬ¡ (Cadm

ium)

19

µ“√“ß∑’Ë 1 (µàÕ)

“√ Ÿµ√∑“ß πÈ”Àπ—°Õ–µÕ¡

∂“π¿“槫“¡∂à«ß ®ÿ¥À≈Õ¡- ®ÿ¥‡¥◊Õ¥

°“√≈–≈“¬‡§¡’ À√◊Õ‚¡‡≈°ÿ≈ ®”‡æ“– ≈–≈“¬ ( ÌC) ( ÌC)

Cadmium telluride CdTe 240.0 º≈÷° ’ˇÀ≈’ˬ¡ ’¥” 6.20 1041 - -(15 ÌC)

Cadmium trichloro Cd(C2Cl3O2)2. 464.22 º≈÷° 2.093 - - -acetate 1 1/2H2O (25 ÌC)

Cadmium trihydra- Cd(N2H4)3 375.5 - - - - -zine chlorate (ClO3)2

Cadmium trihydra- Cd(N2H4)3 407.5 - - - - -zine perchlorate (ClO4)2

Cadmium tungstate CdWO4 360.3 º≈÷° ’‡À≈◊Õß - - - -

dec1/ = decomposition point À¡“¬∂÷ßÕÿ≥À¿Ÿ¡‘∑’Ë∑”„Àâ “√π—Èπ‡°‘¥°“√‡ª≈’ˬπ·ª≈ßÕߧåª√–°Õ∫ πÕ°‡Àπ◊Õ‰ª®“°°“√‡ª≈’ˬπ ∂“π–®“°¢Õß·¢Á߉ª‡ªìπ¢Õ߇À≈«

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20 “√Õ—πµ√“¬

1.3 °“√®”·π°Õ—πµ√“¬ (hazard classification)

·§¥‡¡’ˬ¡‡ªìπ “√„π class: 6.1 §◊Õ “√‡ªìπæ‘… (poisonous substances)µ“¡°“√®”·π°¢Õß UN (United Nations)

Õ—πµ√“¬∑’Ë®–‡°‘¥®“° “√ª√–°Õ∫·§¥‡¡’ˬ¡ √ÿª‰«â„πµ“√“ß∑’Ë 2

µ“√“ß∑’Ë 2 Õ—πµ√“¬¢Õß “√ª√–°Õ∫·§¥‡¡’ˬ¡

Õ—πµ√“¬∑’ˇ°‘¥¢÷Èπ “√ª√–°Õ∫ ‡ß◊ËÕπ‰¢

1. Õ—πµ√“¬®“°‰ø„π cadmium „π√ŸªΩÿÉπ≈–ÕÕß®–∑”„À⇰‘¥°“√µ‘¥‰ø√–¥—∫ª“π°≈“ß ‰¥â‡¡◊ËÕ∂Ÿ°°—∫§«“¡√âÕ𠇪≈«‰ø À√◊Õ

∑”ªØ‘°‘√‘¬“°—∫ “√ÕÕ°´‘‰¥´å À√◊Õ‚≈À– ‡™àπ zinc, tellurium ·≈–NH3

cadmium arsenide ‡¡◊ËÕ∂Ÿ°°—∫§«“¡√âÕπÀ√◊Õ‡ª≈«‰ø

cadmium bromate ‚¥¬∑”ªØ‘°‘√‘¬“‡§¡’°—∫ “√√’¥‘«´‘Ëß(reducing agents)

cadmium chlorate ‚¥¬∑”ªØ‘°‘√‘¬“‡§¡’°—∫ reducingagents ·≈– “√π’ȇªìπµ—« oxidizingÕ¬à“ß·√ß ®–∑”ªØ‘°‘√‘¬“√ÿπ·√ß°—∫Sb2S3, As2S3 CuS, SnS2, SnS

cadmium selenide ‡¡◊ËÕ∂Ÿ°°—∫§«“¡√âÕπÀ√◊Õ‡ª≈«‰ø

cadmium telluride ‡¡◊ËÕ∂Ÿ°°—∫§«“¡√âÕπÀ√◊Õ‡ª≈«‰ø

2. Õ—πµ√“¬®“°°“√ cadmium „π√ŸªΩÿÉπ‡¡◊ËÕ∂Ÿ°°—∫‡ª≈«‰ø√–‡∫‘¥„π√–¥—∫ cadmium arsenide ‡¡◊ËÕ∂Ÿ°°—∫‡ª≈«‰ø

ª“π°≈“ß cadmium azide

cadmium bromide ®–‡°‘¥°“√√–‡∫‘¥‡¡◊ËÕ∑”ªØ‘°‘√‘¬“°—∫ potassium

cadmium chlorate ‡¡◊ËÕ∂Ÿ°°—∫§«“¡√âÕπ

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·§¥‡¡’ˬ¡ (Cadmium) 21

µ“√“ß∑’Ë 2 (µàÕ)

Õ—πµ√“¬∑’ˇ°‘¥¢÷Èπ “√ª√–°Õ∫ ‡ß◊ËÕπ‰¢

cadmium selenide ‡¡◊ËÕ∂Ÿ°°—∫‡ª≈«‰ø

cadmium telluride ‡¡◊ËÕ∂Ÿ°°—∫‡ª≈«‰ø

cadmium trihydrazine √–‡∫‘¥‡¡◊ËÕ∂Ÿ°∑ÿ∫chlorate

cadmium trihydrazine ¡’ƒ∑∏‘χªìπ “√∑’Ë√–‡∫‘¥‰¥âßà“¬perchlorate

cadmium hexammine √–‡∫‘¥‡¡◊ËÕ∂Ÿ°∑ÿ∫chlorate

cadmium hexammine √–‡∫‘¥‡¡◊ËÕ∂Ÿ°∑ÿ∫perchlorate

3. Õ—πµ√“¬®“°°“√∑’Ë cadmium dust ®–∑”ªØ‘°‘√‘¬“Õ¬à“ß√ÿπ·√ß°—∫ “√ “√‡¢â“°—π‰¡à‰¥â oxidizing§◊Õ‡¡◊ËÕ∑”ªØ‘°‘√‘¬“ cadmium arsenide ‡¡◊ËÕ∂Ÿ°‡º“„Àâ√âÕπÀ√◊Õ∑”ªØ‘°‘√‘¬“°—∫®–∑”„À⇰‘¥§«“¡ °√¥®–„Àâ fume ∑’Ë¡’§«“¡‡ªìπæ‘… Ÿß√âÕπ®π∂÷ß√–‡∫‘¥‰¥â ´÷Ëß®–∑”ªØ‘°‘√‘¬“Õ¬à“ß√ÿπ·√ß°—∫πÈ”

‰ÕπÈ” À√◊Õ oxidizing agents

cadmium bromate ®–∑”ªØ‘°‘√‘¬“Õ¬à“ß√ÿπ·√ß°—∫reducing agents

cadmium bromide ∑”„À⇰‘¥√–‡∫‘¥‰¥â∂â“∑”ªØ‘°‘√‘¬“°—∫ potassium

cadmium chlorate ∑”ªØ‘°‘√‘¬“Õ¬à“ß√ÿπ·√ß°—∫reducing agents

cadmium chloride ®–∑”ªØ‘°‘√‘¬“Õ¬à“ß√ÿπ·√ß°—∫BrF3 ·≈– K

cadmium cyanide ®–∑”ªØ‘°‘√‘¬“Õ¬à“ß√ÿπ·√ß°—∫ Mg

cadmium iodide ∑”ªØ‘°‘√‘¬“Õ¬à“ß√ÿπ·√ß°—∫ K

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22 “√Õ—πµ√“¬

µ“√“ß∑’Ë 2 (µàÕ)

Õ—πµ√“¬∑’ˇ°‘¥¢÷Èπ “√ª√–°Õ∫ ‡ß◊ËÕπ‰¢

cadmium nitride ∑”ªØ‘°‘√‘¬“°—∫°√¥ ¥à“ß ·≈–πÈ”∑”„À⇰‘¥°“√√–‡∫‘¥‰¥â

cadmium oxide ∑”ªØ‘°‘√‘¬“Õ¬à“ß√ÿπ·√ß°—∫ Mg

cadmium telluride ‡¡◊ËÕ∑”ªØ‘°‘√‘¬“°—∫°√¥ ‰Õ°√¥ À√◊Õ§«“¡™◊Èπ®–„Àâ hydrogen telluride·≈– “√ª√–°Õ∫ tellurium

4. Õ—πµ√“¬®“°§«“¡ cadmium chloride ∑”„À⇰‘¥¡–‡√Áß ‡π◊ÈÕßÕ°·≈–§«“¡‡ªìπæ‘… º‘¥ª°µ‘¢Õß∑“√°„π —µ«å∑¥≈Õß

cadmium ethylenebis- ∑”„À⇰‘¥‡π◊ÈÕßÕ°„π —µ«å∑¥≈Õßdithiocarbamate

cadmium sulfate ∑”„À⇰‘¥‡π◊ÈÕßÕ° ¡–‡√Áß·≈–§«“¡º‘¥ª°µ‘¢Õß∑“√°„π —µ«å∑¥≈Õß

cadmium sulfate ∑”„À⇰‘¥¡–‡√Áß„π —µ«å∑¥≈Õßtetrahydrate

5. ‡°‘¥°“√√–§“¬‡§◊Õß cadmium acetate √–§“¬‡§◊ÕßµàÕº‘«Àπ—ß µ“ ·≈–·≈–°—¥°√àÕπ √–∫∫∑“߇¥‘πÀ“¬„®

cadmium hydroxide √–§“¬‡§◊ÕßµàÕµ“·≈–º‘«Àπ—ß°—¥°√àÕπ√–∫∫∑“߇¥‘πÀ“¬„®

cadmium oxide √–§“¬‡§◊ÕßµàÕ‡¬◊ËÕ∫ÿ∑“߇¥‘πÀ“¬„®·≈–∑“߇¥‘πÕ“À“√

cadmium sulfide √–§“¬‡§◊ÕßµàÕµ“·≈–º‘«Àπ—ß·≈–°—¥°√àÕπµàÕ√–∫∫∑“߇¥‘πÀ“¬„®

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·§¥‡¡’ˬ¡ (Cadmium) 23

°“√º≈‘µ·≈–°“√§â“(Production/trade)

°“√º≈‘µ·§¥‡¡’ˬ¡‡√‘Ë¡µ—Èß·µàª≈“¬»µ«√√…∑’Ë 19 ª√‘¡“≥∑’˺≈‘µ‰¥â à«π„À≠à‡ªìπº≈æ≈Õ¬‰¥â®“°°“√∂≈ÿß —ß°– ’ ·≈–∫“ß à«π‰¥â®“°Õÿµ “À°√√¡∂≈ÿß∑Õß·¥ß ·≈–µ–°—Ë«

IARC (International Agency for Research on Cancer) ‰¥â√“¬ß“πª√‘¡“≥°“√º≈‘µ·§¥‡¡’ˬ¡∑—Ë«‚≈° „πªï §.». 1973 ¡’ª√‘¡“≥ 17,000 µ—π ·≈–ª√–‡∑»∑’˺≈‘µ‰¥â·°à ·§π“¥“ ≠’˪ÿÉπ À√—∞Õ‡¡√‘°“ À¿“æ‚´‡«’¬µ —ߧ¡π‘¬¡ Ω√—Ë߇» Õ‘µ“≈’ ‡ªπ ¬Ÿ‚° ≈“‡«’¬ ·≈– Zaire ‡ªìπµâπ

”À√—∫ª√–‡∑»‰∑¬‡√‘Ë¡∑”°“√º≈‘µ·§¥‡¡’ˬ¡µ—Èß·µàªï æ.». 2533 ‚¥¬º≈‘µ®“°·§¥‡¡’ˬ¡ ´÷Ë߇ªìπ¢Õ߇À≈◊Õ®“°°√–∫«π°“√º≈‘µ¢Õß‚√ßß“π∂≈ÿß —ß°– ’ ∫√‘…—∑ º“·¥ß-Õ‘π¥— ∑√’ ®”°—¥ ®—ßÀ«—¥µ“° ª√–¡“≥‡¥◊Õπ≈– 1 µ—π àß®”Àπà“¬¬—ߪ√–‡∑»≠’˪ÿÉπ

·§¥‡¡’ˬ¡∑’Ë„™â„πª√–‡∑» ‰¥â®“°°“√π”‡¢â“®“°ª√–‡∑» Àæ—π∏å “∏“√≥√—∞‡¬Õ√¡—π À√—∞Õ‡¡√‘°“ Õ—ß°ƒ… ÕÕ ‡µ√‡≈’¬ ·≈– «‘µ‡´Õ√å·≈π¥å ‚¥¬π”‡¢â“∑—Èß™π‘¥∑’Ë·ª√√Ÿª·≈â«·≈–¬—߉¡à‰¥â·ª√√Ÿª

2

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24 “√Õ—πµ√“¬

3°√√¡«‘∏’°“√º≈‘µ(Production process)

·§¥‡¡’ˬ¡‡ªìπ·√à∑’Ëæ∫°√–®“¬ªπ°—∫·√à™π‘¥Õ◊Ëπ ‰¡à‰¥â‡ªìπ·√à∑’Ë·¬°‡ªìπ‡Õ°‡∑»·≈–¡—°æ∫ªπÕ¬Ÿà°—∫·√à —ß°– ’„πª√‘¡“≥ 0.1-5% ´÷Ëߪ√‘¡“≥·§¥‡¡’ˬ¡®–¡’¡“°À√◊ÕπâÕ¬®–¢÷ÈπÕ¬Ÿà°—∫ª√‘¡“≥ —ß°– ’„π·√à °≈à“«§◊Õ ∂â“„π·√à¡’ª√‘¡“≥ —ß°– ’ Ÿßª√‘¡“≥·§¥‡¡’ˬ¡®– Ÿßµ“¡‰ª¥â«¬ ´÷ËßÕ—µ√“ à«π√–À«à“ß·§¥‡¡’ˬ¡·≈– —ß°– ’„π·√à®–¡’§à“µ—Èß·µà 1 : 350®π∂÷ß 1 : 100 πÕ°®“°®–æ∫·√à·§¥‡¡’ˬ¡ªπÕ¬Ÿà„π·√à —ß°– ’·≈â« ¬—ßæ∫Õ¬Ÿà„π·√ൖ°—Ë«·≈–∑Õß·¥ß ·µàæ∫„πª√‘¡“≥πâÕ¬°«à“

”À√—∫·√à —ß°– ’„πª√–‡∑»‰∑¬∑’Ë¢ÿ¥‰¥â„π®—ßÀ«—¥µ“°¡’·§¥‡¡’ˬ¡ª√–°Õ∫Õ¬Ÿà 0.23-0.38%

„π°“√º≈‘µ·§¥‡¡’ˬ¡π—Èπ‰¥â®“° à«π‡À≈◊Õ (by-product) ¢Õß°“√∂≈ÿß —ß°– ’µ–°—Ë« À√◊Õ∑Õß·¥ß ´÷Ëß by-product ”§—≠∑’Ëπ”¡“„™â„π°“√º≈‘µ·§¥‡¡’ˬ¡ §◊Õ zinc-cadmium cake ®“°°“√∂≈ÿß —ß°– ’ ´÷Ëß¡’ Cd 2.5-10% À√◊Õ by-product ®“°distillation plant ¢Õß°“√º≈‘µµ–°—Ë«·≈– —ß°– ’ „π√Ÿª¢ÕßΩÿÉπµ–°—Ë«∑’Ë¡’ Cd ª√–¡“≥2-5% ·≈–ºß∑’Ë¡’ Cd 0.7-1.07% ·µà à«π„À≠à by-product ∑’Ëπ”¡“„™â‡ªìπ«—µ∂ÿ¥‘∫„π°“√º≈‘µ·§¥‡¡’ˬ¡ §◊Õ zinc-cadmium cake

°√–∫«π°“√„π°“√º≈‘µ·§¥‡¡’ˬ¡®“° by-product ª√–‡¿∑ zinc-cadmiumcake à«π„À≠à®–„™â«‘∏’ hydrometallurgical ´÷Ëß¡’¢—ÈπµÕπÀ≈—°Ê ¥—ßπ’ȧ◊Õ

(1) ∫¥„Àâ≈–‡Õ’¬¥·≈–·¢«π≈Õ¬„ππÈ” (leaching process)

(2) °√–∫«π°“√·¬° ‘Ë߇®◊Õªπµà“ßÊ ÕÕ° (purification)

(3) ·¬°·§¥‡¡’ˬ¡ÕÕ°®“° “√≈–≈“¬‚¥¬„™â‰øøÑ“ (electrolytic)

(4) π”·§¥‡¡’ˬ¡∑’Ë·¬°‰¥â¡“À≈Õ¡≈–≈“¬

(5) π”¡“ºà“π°√–∫«π°“√µà“ßÊ ‡æ◊ËÕ„À≥â‚≈À–·§¥‡¡’ˬ¡∑’Ë¡’§«“¡∫√‘ ÿ∑∏‘Ï Ÿß

”À√—∫°“√ °—¥‡Õ“·§¥‡¡’ˬ¡ÕÕ°®“°º≈‘µ¿—≥±åµà“ßÊ ∑’Ë¡’·§¥‡¡’ˬ¡ª√–°Õ∫Õ¬Ÿà¡’¢—ÈπµÕπ„π°“√ °—¥¥—ßπ’È §◊Õ

(1) π”º≈‘µ¿—≥±å‡À≈à“π—Èπ‰ª≈–≈“¬„π°√¥´—≈øŸ√‘§‡®◊Õ®“ß ®–∑”„Àâ·§¥‡¡’ˬ¡·≈– —ß°– ’≈–≈“¬ÕÕ°¡“ ®“°π—È𷧥‡¡’ˬ¡®–µ°µ–°Õπ≈ß¡“°—∫ΩÿÉπ —ß°– ’

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·§¥‡¡’ˬ¡ (Cadmium) 25

(2) ·¬°µ–°Õ𷧥‡¡’ˬ¡ÕÕ°¡“ (µ–°Õππ’È¡’ Cd ª√–¡“≥ 50-80%, Znª√–¡“≥ 10-20% à«π∑’ˇÀ≈◊Õ®–‡ªìπ‡À≈Á°·≈–∑Õß·¥ß)

(3) π”µ–°Õ𷧥‡¡’ˬ¡º÷Ëß≈¡‡æ◊ËÕ„À⇰‘¥°“√ÕÕ°´‘‰¥´å‡ªìπ‡«≈“ 2-3 —ª¥“Àå(¢—ÈπµÕππ’È∫“ß·Ààß„™â‰ÕπÈ”·∑π)

(4) π”µ–°Õπ¥—ß°≈à“«¡“ °—¥‡Õ“·§¥‡¡’ˬ¡ÕÕ°¡“ ‚¥¬π”‰ª∑”ªØ‘°‘√‘¬“°—∫°√¥´—≈øŸ√‘§‡®◊Õ®“ß∑’Ë¡’§«“¡‡¢â¡¢âπ 70-80 g/l

(5) cadmium sulfate ®–∂Ÿ°µ°µ–°Õπ®“° “√≈–≈“¬‚¥¬°“√ electrolysis∑’Ë 40 ÌC

(6) π”‡Õ“·§¥‡¡’ˬ¡∑’ˇ°“–µ‘¥Õ¬Ÿà∫π·∑àß cathodes ÕÕ°∑”„Àâ·Àâß ·≈–𔉪À≈Õ¡Õ’°§√—Èß∑’ËÕÿ≥À¿Ÿ¡‘ 330-335 ÌC

(7) ·§¥‡¡’ˬ¡∑’ˉ¥â®–∂Ÿ°À≈àÕ„À⇪ìπ°âÕπÀ√◊Õ·∑àß

à«π°√–∫«π°“√ °—¥·§¥‡¡’ˬ¡ÕÕ°®“°ΩÿÉπ¢Õßµ–°—Ë« ∑”‰¥â‚¥¬°“√𔉪≈–≈“¬¥â«¬°√¥´—≈øŸ√‘§∑’ËÕÿ≥À¿Ÿ¡‘ 400-500 ÌC ·≈–µ“¡¥â«¬«‘∏’ hydrometallurgical

®“°°“√∑’Ë„π cake ¡’ª√‘¡“≥·§¥‡¡’ˬ¡·µ°µà“ß°—π‰ª ¥—ßπ—Èπ„π°√–∫«π°“√leaching ®”‡ªìπµâÕß¡’°“√‡æ‘Ë¡À√◊Õ¥—¥·ª≈ß«‘∏’°“√„Àâ·µ°µà“ß°—π‰ª

∂⓪√‘¡“≥·§¥‡¡’ˬ¡„π cake ¡’¡“°°«à“ 6% „™â leaching process Õ¬à“߇¥’¬«

∂⓪√‘¡“≥·§¥‡¡’ˬ¡„π cake ¡’ 3-6% „™â leaching process ÷Ëß “¡“√∂≈–≈“¬∑—Èß·§¥‡¡’ˬ¡·≈–∑Õß·¥ß µàÕ¡“µ°µ–°Õπ‡Õ“·§¥‡¡’ˬ¡ÕÕ°®“° “√≈–≈“¬∑Õß·¥ß

∂⓪√‘¡“≥·§¥‡¡’ˬ¡„π cake ¡’πâÕ¬°«à“ 3% ‚¥¬°“√ leaching 2 §√—Èß °≈à“«§◊Õ§√—Èß·√°‚¥¬°“√ carburization cadmium ®“° “√≈–≈“¬∑’Ë¡’·√à·¢«π≈Õ¬Õ¬Ÿà ·≈⫵“¡¥â«¬°“√ leaching copper-cadmium cake ÕÕ°¡“‚¥¬„™â centifugal reactor´÷Ëß·§¥‡¡’ˬ¡∑’ˉ¥â®–∂Ÿ°π”¡“ºà“π°√–∫«π°“√Õ◊ËπÊ Õ’°‡æ◊ËÕ„À≥ⷧ¥‡¡’ˬ¡∑’Ë¡’§«“¡∫√‘ ÿ∑∏‘Ï Ÿß

„π°“√ °—¥·§¥‡¡’ˬ¡ÕÕ°®“°º≈‘µ¿—≥±å°÷Ëß ”‡√Á®√Ÿªª√–‡¿∑µ–°—Ë« À√◊Õ∑Õß·¥ß„™â«‘∏’ amalgam ‚¥¬°“√ carburization ¥â«¬ zinc amalgam ·≈⫵“¡¥â«¬ªØ‘°‘√‘¬“anodic oxidation

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26 “√Õ—πµ√“¬

4°“√„™â(Uses)

4.1 „™âº ¡°—∫‚≈À–Õ◊Ëπ‡ªìπ‚≈À–º ¡ (alloy) ‡æ◊ËÕ‡æ‘Ë¡§«“¡‡À𒬫·≈–∑πµàÕ°“√ ÷°°√àÕ𠇙àπ

(1) alloy ¢Õß∑Õß·¥ß∑’Ë¡’·§¥‡¡’ˬ¡ 1% (cadmium bronze) „™â„π°“√º≈‘µ‡ âπ≈«¥‚∑√‡≈¢·≈–‚∑√»—æ∑å

(2) alloy ¢Õß∑Õß·¥ß·≈–µ–°—Ë«´÷Ëß¡’·§¥‡¡’ˬ¡º ¡Õ¬Ÿà 20% „™â„π°“√º≈‘µ·∫∫æ‘¡æå (printing plates)

(3) alloy ¢Õß∑Õß·¥ß ·§¥‡¡’ˬ¡ ·≈– zirconium „™â„πÕÿª°√≥å°“√ ◊ËÕ “√µà“ßÊ ∑’Ë¡’ voltage ŸßÊ ∑—Èßπ’ȇæ√“–‚≈À–º ¡ª√–‡¿∑π’È®–¡’§«“¡·¢Áß ·≈–¡’·√ߥ÷߉¥â Ÿß°«à“‚≈À–º ¡¢Õß∑Õß·¥ß°—∫·§¥‡¡’ˬ¡

(4) „™âº ¡°—∫‚≈À–º ¡Õ◊Ëπ„π°‘®°“√‡æ™√æ≈Õ¬ ‡™àπ º ¡°—∫‚≈À–Õ◊Ëπ™π‘¥‡¥’¬« (º ¡∑Õß) º ¡°—∫‚≈À–Õ◊Ëπ 2 ™π‘¥ (∑Õß 75% ‡ß‘π16.6%) º ¡°—∫‚≈À–Õ◊Ëπ 3 ™π‘¥ (∑Õß·¥ß ‡ß‘π ·≈–∑Õß)

(5) „™â·§¥‡¡’ˬ¡∑’Ë¡’§«“¡∫√‘ ÿ∑∏‘Ï ŸßÊ „π°“√º ¡°—∫‚≈À–Õ◊Ëπ„Àâ¡’§ÿ≥ ¡∫—µ‘°÷Ëßµ—«π” (semiconductor) ‡™àπ cadmium arsenide, cadmiumantimonide ·≈– cadmium telluride

4.2 „™â„π°“√™ÿ∫‚≈À– „™â·§¥‡¡’ˬ¡‡§≈◊Õ∫∫π·ºàπ‡À≈Á° ∑Õß·¥ßÕ–≈Ÿ¡‘‡π’¬¡ ‚¥¬°“√™ÿ∫¥â«¬‰øøÑ“ ‚≈À–∑’ˉ¥â®“°°“√™ÿ∫𔉪„™â‡ªìπ à«πª√–°Õ∫¢Õ߇§√◊ËÕß∫‘π √∂¬πµå Õÿª°√≥å‰øøÑ“ Õÿª°√≥åÕ‘‡≈Á°∑√Õπ‘° å «‘∑¬ÿ

4.3 „™â‡ªìπ‡¡Á¥ ’„π°‘®°“√Õÿµ “À°√√¡ “√ª√–°Õ∫¢Õß·§¥‡¡’ˬ¡∑’Ë„™â„π°“√„Àâ ’„πÕÿµ “À°√√¡µà“ßÊ ‡™àπ ’Õ‘π“‡¡≈ (enamels) ‡´√“¡‘° ¬“ß ·°â« ºâ“‡ âπ„¬ Àπ—ß À¡÷°æ‘¡æå ·≈–æ≈“ µ‘°

4.4 „™âº≈‘µ·∫µ‡µÕ√’Ë ‚¥¬„™â√à«¡°—∫‚≈À–𑇰‘≈ ‡ªìπ cadmium-nickelbattery ÷Ëßπ”¡“„™â‡ªìπ·∫µ‡µÕ√’Ë„π‡§√◊ËÕߧ‘¥‡≈¢ ·ø≈Á´∂à“¬√Ÿª ‡§√◊ËÕß‚°πÀπ«¥ ‡ªìπµâπ

4.5 „™â„π°‘®°“√Õ◊ËπÊ ‡™àπ

(1) „™âº ¡„π “√¶à“‡™◊ÈÕ√“ (fungicides)

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·§¥‡¡’ˬ¡ (Cadmium) 27

(2) „™â„π‡µ“ªØ‘°√≥åª√¡“≥Ÿ ‡ªìπµ—«§«∫§ÿ¡Õ—µ√“°“√·µ°µ—«¢Õß𑫇§≈’¬

(3) „™â„π°“√º≈‘µÀ≈Õ¥ø≈ŸÕÕ‡√ ‡´Áπµå

(4) „™â„π°‘®°“√∂à“¬√Ÿª

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5∑“߇¢â“ Ÿà ‘Ëß·«¥≈âÕ¡(Pathways into the environments)

·À≈àß∑’Ë·æ√à°√–®“¬·§¥‡¡’ˬ¡ Ÿà ‘Ëß·«¥≈âÕ¡ §◊Õ

5.1 ®“°Õÿµ “À°√√¡µ–°—Ë«·≈– —ß°– ’ (‰¥â·°à °“√∑”‡À¡◊Õß °“√À≈Õ¡·≈–∂≈ÿß) Õÿµ “À°√√¡·§¥‡¡’ˬ¡ ´÷ËßÕÿµ “À°√√¡‡À≈à“π’È®–ª≈àÕ¬ΩÿÉπ ‰Õ (fume)πÈ”‡ ’¬ °“°µ–°Õπ (sludge) ∑’Ë¡’·§¥‡¡’ˬ¡ªπÕ¬ŸàÕÕ°¡“

5.2 ®“°‚√ßß“π™ÿ∫‚≈À–·§¥‡¡’ˬ¡ ´÷ËߢÕ߇ ’¬®“°‚√ßß“πª√–‡¿∑π’È®–¡’·§¥‡¡’ˬ¡ª√–¡“≥ 100-500 ppm ·≈–¡’‚≈À–Àπ—°Õ◊ËπÊ √«¡∑—È߉´¬“‰π¥å·≈– “√‡§¡’Õ◊ËπÊ º ¡Õ¬Ÿà¥â«¬

5.3 ®“° primary iron and steel industry ·≈– secondary non-ferous

metal industry Õÿµ “À°√√¡ª√–‡¿∑π’È®–ª≈àÕ¬ΩÿÉπ ‰Õ πÈ”‡ ’¬ °“°µ–°Õπ ∑’Ë¡’·§¥‡¡’ˬ¡ªπÕ¬ŸàÕÕ°¡“

5.4 ®“°°“√‡º“¢Õ߇ ’¬ (incineration) °“√‡º“¢Õ߇ ’¬∑’Ë¡’·§¥‡¡’ˬ¡ª√–°Õ∫Õ¬Ÿà ‡™àπ æ≈“ µ‘° ‡¡Á¥ ’ ‚≈À–‡§≈◊Õ∫ ‡»…‡À≈Á° ‡ªìπµâπ ®–ª≈àÕ¬·§¥‡¡’ˬ¡ÕÕ°¡“„π√Ÿª cadmium aerosols ‡™àπ cadmium oxide (CdO)

5.5 ®“°¬“ß√∂¬πµå∑’Ë ÷°À√Õ ¬“ß√∂¬πµå®–¡’·§¥‡¡’ˬ¡ª√–°Õ∫Õ¬Ÿàª√–¡“≥ 20-90 ppm ‚¥¬‡ªìπ ‘Ë߇®◊Õªπ (impurity) „π zinc oxide ´÷Ë߇ªìπ “√√—°…“§«“¡‡√àß

5.6 ®“°ªÿܬøÕ ‡øµ ªÿܬøÕ ‡øµ¡’·§¥‡¡’ˬ¡ªπÕ¬Ÿà ‡π◊ËÕß®“°À‘πøÕ ‡øµ∑’ˇªìπ«—µ∂ÿ¥‘∫¡’·§¥‡¡’ˬ¡ª√–¡“≥ 2-170 ppm ¡’√“¬ß“π°“√»÷°…“æ∫«à“°“√„™âªÿܬøÕ ‡øµ®–‰ª‡æ‘Ë¡ª√‘¡“≥·§¥‡¡’ˬ¡„π¥‘π ‡æ√“– cadmium phosphate ≈–≈“¬πÈ”‰¥âπâÕ¬ ·≈– à«π∑’ˉ¡à≈–≈“¬æ◊™‰¡à “¡“√∂¥Ÿ¥´÷¡‰¥â ¥—ßπ—È𷧥‡¡’ˬ¡ à«ππ’È®÷ß – ¡Õ¬Ÿà„π¥‘π ·µà∂â“¡’°“√„™âªÿܬ·Õ¡‚¡‡π’¬√à«¡¥â«¬ ·§¥‡¡’ˬ¡®–≈–≈“¬‰¥â¡“°¢÷Èπ‡π◊ËÕß®“°·§¥‡¡’ˬ¡®–‰ª√«¡µ—«°—∫·Õ¡‚¡‡π’¬‡ªìπÕ‘ÕÕπ∑’Ë≈–≈“¬πÈ”‰¥â §◊Õ Cd(NH3)2+2 ·≈–Cd(NH3)4+2

5.7 ®“°°“√„™â∂à“πÀ‘π ·≈– heating oil ·§¥‡¡’ˬ¡‡ªìπ∏“µÿª√‘¡“≥πâÕ¬„π fossil fuels ¥—ßπ—Èπ ‡¡◊ËÕ¡’°“√„™â‡™◊ÈÕ‡æ≈‘߇À≈à“π’È ·§¥‡¡’ˬ¡®–∂Ÿ°ª≈àÕ¬ÕÕ° Ÿà

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·§¥‡¡’ˬ¡ (Cadmium) 29

‘Ëß·«¥≈âÕ¡„π√Ÿª¢Õ߉շ≈–‡∂â“ ª√‘¡“≥·§¥‡¡’ˬ¡„π∂à“πÀ‘πÕ¬Ÿà„π™à«ß 0.25-5 ppm ∂÷ß·¡â®–‰¡à∑√“∫‡ªÕ√凴Áπµå∑’Ë·πàπÕπ¢Õß·§¥‡¡’ˬ¡∑’Ë∂Ÿ°ª≈àÕ¬ÕÕ°®“°ª≈àÕß À√◊Õ à«π∑’Ë∂Ÿ°¢®—¥‚¥¬ scrubber À√◊Õ à«π∑’Ë∂Ÿ°∑”„Àâµ°µ–°Õπ (precipitated) °Áµ“¡ ·µàæ∫«à“„π‡∂â“®“°∂à“πÀ‘π (coal ash) ¡’ª√‘¡“≥·§¥‡¡’ˬ¡ Ÿß∂÷ß 150 ppm à«π§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡‚¥¬‡©≈’ˬ„π heating oil ª√–¡“≥ 0.3 ppm

5.8 ®“°°“°µ–°Õπ¢ÕßπÈ”∑‘Èß (sewage sludge) °“°µ–°Õπ®“°‚√ßß“π°”®—¥πÈ”‡ ’¬¡’ª√‘¡“≥·§¥‡¡’ˬ¡§àÕπ¢â“ß Ÿß ª√‘¡“≥·§¥‡¡’ˬ¡„π°“°µ–°Õπ®“°‚√ßß“π°”®—¥πÈ”‡ ’¬ ®”π«π 56 ·Ààß„πª√–‡∑» «’‡¥π ¡’§à“‡©≈’ˬ 15.6 ppm ·≈–°“√„™â°“°µ–°Õπ‡À≈à“π’ȇæ◊ËÕ‡ªìπªÿܬ ®–‡ªìπ°“√‡æ‘Ë¡ª√‘¡“≥·§¥‡¡’ˬ¡„π¥‘π ‰¥â¡’°“√§”π«≥«à“®“°°“√„™â sewage sludge (∑’Ë¡’ Cd~20 ppm À√◊Õ¡“°°«à“) ®”π«π 2-3 µ—π/ªï„ à≈ß„πæ◊Èπ∑’ˇ擖ª≈Ÿ°∑’ˬ—߉¡à¡’ªí≠À“¡≈æ‘… (unpolluted agriculture soils ´÷Ëß¡’Cd < 0.1-0.5 ppm) ®–‰ª‡æ‘Ë¡ª√‘¡“≥·§¥‡¡’ˬ¡„π¥‘π‡æ“–ª≈Ÿ°π’ȇªìπ 1.2-6 ppm·≈–æ∫«à“æ◊™∫“ß™π‘¥ ‡™àπ ¢â“« ¢â“« “≈’ “¡“√∂¥Ÿ¥´÷¡·§¥‡¡’ˬ¡®“°¥‘π‰¥â¥’

5.9 ®“°°“√ ÷°°√àÕπ¢Õß —ß°– ’ (corrosion of zinc) ·§¥‡¡’ˬ¡‡ªìπ ‘Ë߇®◊Õªπ„π —ß°– ’ ‡¡◊ËÕ‚≈À–À√◊Õ¿“™π–∑’Ë™ÿ∫ —ß°– ’‡°‘¥°“√ ÷°°√àÕ𷧥‡¡’ˬ¡°Á®–·æ√à°√–®“¬ÕÕ° Ÿà ‘Ëß·«¥≈âÕ¡‰¥â

5.10 ¬“ Ÿ∫ (tobacco) ®“°°“√ Ÿ∫∫ÿÀ√’Ëæ∫«à“¡’·§¥‡¡’ˬ¡ÕÕ° Ÿà∫√√¬“°“»1.4 ‰¡‚§√°√—¡/∫ÿÀ√’Ë 1 ¡«π

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30 “√Õ—πµ√“¬

6§«“¡‡¢â¡¢âπ„π ‘Ëß·«¥≈âÕ¡(Concentrations)

6.1 „π∫√√¬“°“»

®“°°“√µ√«®«—¥ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡„π∫√√¬“°“»¢Õߪ√–‡∑»µà“ßÊ æ∫«à“·§¥‡¡’ˬ¡„π∫√√¬“°“»‡¢µ™π∫∑¡’ª√‘¡“≥µË”¡“°ª√–¡“≥ 0.0001-0.043µg/m3 ·≈–·¡â°√–∑—Ëß„π‡¢µ‡¡◊ÕßÕÿµ “À°√√¡°Á¡’ª√‘¡“≥·§¥‡¡’ˬ¡„π∫√√¬“°“»µË”‡™àπ‡¥’¬«°—π ª√–¡“≥ 0.002-0.7 µg/m3 ¥—ßπ—Èπª√‘¡“≥·§¥‡¡’ˬ¡∑’Ë√à“ß°“¬®–‰¥â√—∫‚¥¬°“√ Ÿ¥À“¬„®®÷ߧàÕπ¢â“ßπâÕ¬¡“°‡¡◊ËÕ‡∑’¬∫°—∫ª√‘¡“≥∑’ˉ¥â√—∫®“°Õ“À“√ à«πª√‘¡“≥·§¥‡¡’ˬ¡„π∫√√¬“°“»∫√‘‡«≥„°≈â°—∫ª≈àÕß√–∫“¬Õ“°“»‡ ’¬¢Õß·§¥‡¡’ˬ¡ Õ“®®–¡’ª√‘¡“≥ Ÿß°«à“∫√‘‡«≥Õ◊ËπÊ ¡“° (0.01-5 µg/m3)

”À√—∫„πª√–‡∑»‰∑¬ ¡’°“√µ√«®«—¥§ÿ≥¿“æÕ“°“»„π∫√√¬“°“»∫√‘‡«≥„°≈⇧’¬ß ‚√ßß“π∂≈ÿß —ß°– ’ ∫√‘…—∑ º“·¥ßÕ‘π¥— ∑√’ ®”°—¥ ®—ßÀ«—¥µ“° „π√—»¡’ª√–¡“≥ 1 °‘‚≈‡¡µ√ ‚¥¬µ√«®«—¥„π√Ÿª¢ÕßΩÿÉπµ° æ∫«à“ª√‘¡“≥µË”¡“° °≈à“«§◊Õ®“°°“√µ√«®«—¥¢Õß∫√‘…—∑ º“·¥ß Õ‘π¥— ∑√’ ®”°—¥ „πªï æ.». 2528-2530 æ∫«à“ª√‘¡“≥·§¥‡¡’ˬ¡„π∫√√¬“°“»‡©≈’ˬ 24 ™—Ë«‚¡ß ¡’§à“ª√–¡“≥ 0.007-0.02 µg/m3 ·≈–®“°°“√µ√«®«—¥„π∑”πÕ߇¥’¬«°—π ‚¥¬ ”π—°ß“π§≥–°√√¡°“√ ‘Ëß·«¥≈âÕ¡·Ààß™“µ‘ ‡¡◊ËÕ‡¥◊Õπ¡°√“§¡ 2529 ·≈–‚¥¬®ÿÓ≈ß°√≥å¡À“«‘∑¬“≈—¬ ‡¡◊ËÕ‡¥◊Õπ情¿“§¡ 2529 ¡’ª√‘¡“≥·§¥‡¡’ˬ¡ 0.0003-0.0033 µg/m3 ·≈– < 0.003 µg/m3 µ“¡≈”¥—∫

6.2 „π ¿“æ·«¥≈âÕ¡°“√∑”ß“π

®“°°“√µ√«®«—¥ª√‘¡“≥·§¥‡¡’ˬ¡„π ¿“æ·«¥≈âÕ¡°“√∑”ß“π¢Õß‚√ßß“π∂≈ÿß —ß°– ’ ®.µ“° ª√“°Ø«à“¡’ª√‘¡“≥µË”¡“° §◊Õ§à“ Ÿß ÿ¥∑’Ëæ∫ 0.07 µg/m3

6.3 „π·À≈àßπÈ”

®“°°“√µ√«®«—¥§ÿ≥¿“æπÈ”„π·¡àπÈ” “¬À≈—° ·≈–·¡àπÈ”Õ◊ËπÊ ¢Õߪ√–‡∑»‰∑¬ æ∫«à“¡’ª√‘¡“≥·§¥‡¡’ˬ¡„π√–¥—∫µà“ßÊ °—π ¥—ß· ¥ß„πµ“√“ß∑’Ë 3

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µ“√“ß∑’Ë 3 ª√‘¡“≥·§¥‡¡’ˬ¡„π·À≈àßπÈ”

·¡àπÈ”ª√‘¡“≥·§¥‡¡’ˬ¡

ªï æ.». §à“µË” ÿ¥-§à“ Ÿß ÿ¥ §à“‡©≈’ˬ

‡®â“æ√–¬“ 2526 < 0.50-0.80 0.6

2527 < 0.10-10.16 1.19

∫“ߪ–°ß 2526 0.50-2.40 0.75

2527 0.10-6.50 1.81

2528 0.10-2.50 0.73

2529 N.D.-4.31 0.82

2530 N.D.-2.50 0.57

·¡à°≈Õß 2527 < 0.10-3.82 1.22

2528 < 0.10-4.50 0.55

·¡àπÈ”ª√“®’π∫ÿ√’ 2526 < 0.50-0.80 0.55

2527 < 0.10-0.45 0.21

2528 < 0.10-0.92 0.19

2529 0.13-0.77 0.45

·¡àπÈ”π§√𓬰 2526 < 0.50-2.00 0.64

2527 0.10-3.14 1.12

2528 0.10-0.40 0.21

2529 N.D.-0.43 0.24

·¡àπÈ”ªîß 2526 0.001-0.002

2527 0.002-0.004 0.0026

2528 < 0.002-0.004 0.0024

2529 < 0.002-0.002 0.002

2530 < 0.001-0.01 0.0026

À¡“¬‡Àµÿ N.D. = non detectable

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32 “√Õ—πµ√“¬

6.4 „πµ–°Õπ¥‘π (sediment)

®“°°“√µ√«®«—¥ª√‘¡“≥·§¥‡¡’ˬ¡„πµ–°Õπ¥‘π®“°·¡àπÈ”∫“ߪ–°ßª√“®’π∫ÿ√’ ·≈–π§√𓬰 ‡¡◊ËÕªï æ.». 2530 æ∫«à“¡’§à“ Ÿß ÿ¥ 0.5, <0.5 ·≈– <0.5µg/g µ“¡≈”¥—∫ à«πª√‘¡“≥ Ÿß ÿ¥∑’Ëæ∫„πµ–°Õπ¥‘π·¡àπÈ”ªîß ®“°°“√µ√«®«—¥‡¡◊ËÕ‡¥◊Õπ¡°√“§¡ 2532 ¡’§à“ 0.027 µg/g

6.5 „ππÈ”¥◊Ë¡ (drinking water)

®“°°“√µ√«®«—¥ª√‘¡“≥·§¥‡¡’ˬ¡„ππÈ”∫àÕπÈ”µ◊Èπ ‡¢µ Õ.‡¡◊Õß ®.µ“° ∑’Ë„™â‡æ◊ËÕ°“√Õÿª‚¿§∫√‘‚¿§ ‡¡◊ËÕ‡¥◊Õπ¡°√“§¡ 2532 ‚¥¬ ”π—°ß“π§≥–°√√¡°“√ ‘Ëß·«¥≈âÕ¡·Ààß™“µ‘ ¡’ª√‘¡“≥µË”¡“° §◊Õ§à“ Ÿß ÿ¥∑’Ëæ∫ 0.18 µg/l

6.6 „π¢â“« (rice grain)

ª√‘¡“≥·§¥‡¡’ˬ¡„π¢â“«°≈âÕß·≈–¢â“« “√ ¢Õߢ⓫‡®â“·≈–¢â“«‡À𒬫®”π«π 64 µ—«Õ¬à“ß ®“° 23 æ—π∏ÿå ´÷Ë߇ªìπµ—«Õ¬à“ß∑’ˇ°Á∫®“° ∂“π’∑¥≈Õßæ—π∏ÿå¢â“«∑ÿ°¿“§∑—Ë«ª√–‡∑» „π√–À«à“ߪï æ.». 2517-2518 ‚¥¬ ”π—°ß“πæ≈—ßß“πª√¡“≥Ÿ‡æ◊ËÕ —πµ‘¡’§à“¥—ß· ¥ß„πµ“√“ß∑’Ë 4

µ“√“ß∑’Ë 4 ª√‘¡“≥·§¥‡¡’ˬ¡„π¢â“«∑—Ë«ª√–‡∑»

ª√‘¡“≥·§¥‡¡’¬¡ (µg/g)™π‘¥¢Õߢ⓫

¢â“«°≈âÕß ¢â“« “√

¢â“«‡®â“ 0.1270-0.9695 0.0283-0.3972

¢â“«‡À𒬫 0.0665-1.2740 0.0382-0.3948

6.7 „πÕ“À“√

‚¥¬∑—Ë«‰ªÕ“À“√∑’Ë¡“®“°∫√‘‡«≥∑’ˉ¡à¡’ªí≠À“¡≈æ‘…®–¡’·§¥‡¡’ˬ¡µË”°«à“1 ppm ¬°‡«âπ„π µ—∫ ‰µ ·≈– —µ«å∑–‡≈ª√–‡¿∑ ÀÕ¬ °ÿâß ªŸ ®–¡’§à“·§¥‡¡’ˬ¡„πª√‘¡“≥ Ÿß°«à“π’È¡“°

”À√—∫æ◊™º—°·≈–¢â“«∑’˪≈Ÿ°„π¥‘π∑’Ë¡’‰¥â√—∫°“√ªπ‡ªóôÕπ¥â«¬·§¥‡¡’ˬ¡®–æ∫«à“¡’·§¥‡¡’ˬ¡ª√–¡“≥ 1 ppm À√◊Õ¡“°°«à“

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·§¥‡¡’ˬ¡ (Cadmium) 33

7°“√∑¥ Õ∫§«“¡‡ªìπ‰ª„π ‘Ëß·«¥≈âÕ¡(Environmental fate tests)

7.1 °“√·µ°µ—«∑”ªØ‘°‘√‘¬“°—∫πÈ” (hydrolysis)

·§¥‡¡’ˬ¡µ“¡‡·À≈àßπÈ”„π∏√√¡™“µ‘ ¡’Õ¬Ÿà¥â«¬°—πÀ≈“¬√Ÿª ‡™àπ „π√Ÿª¢ÕßÕ‘ÕÕπ “√ª√–°Õ∫¢Õß‚≈À–-Õπ‘π∑√’¬å À√◊Õ‚≈À–-Õ‘π∑√’¬å ·µà à«π„À≠à®–Õ¬Ÿà„π√Ÿª¢Õß divalent cadmium ion ·≈–ªí®®—¬ ”§—≠∑’Ë∑”„Àâ·§¥‡¡’ˬ¡Õ¬Ÿà„π√ŸªÕ◊Ëπ §◊Õ pH·≈–ª√‘¡“≥ “√Õ‘π∑√’¬å ‡π◊ËÕß®“°Õ‘ÕÕπ¢Õß·§¥‡¡’ˬ¡®–√«¡µ—«‡ªìπ “√ª√–°Õ∫°—∫ “√À√◊ÕÕ‘ÕÕπÕ◊ËπÊ ∑’ËÕ¬Ÿà„ππÈ”µ“¡≈”¥—∫°àÕπÀ≈—ß„π·ßà¢Õß°“√®—∫µ—« §◊Õ humic acid >CO3

= > OH- ≥ Cl- ≥ SO4=

EPA (1979) ‰¥â√“¬ß“π‰«â«à“ pH ·≈–§«“¡°√–¥â“߉¡à‰¥â¡’ à«π ”§—≠¡“°π—°„πªØ‘°‘√‘¬“°“√®—∫µ—«√–À«à“ß‚≈À–°—∫ “√Õ‘π∑√’¬å ·µà®–¡’ à«π ”§—≠¡“°„πªØ‘°‘√‘¬“°“√®—∫µ—«√–À«à“ß‚≈À–°—∫ humic acid °≈à“«§◊Õ ‡¡◊ËÕ pH ‡æ‘Ë¡¢÷Èπ°Á®–‰ª‡æ‘Ë¡°“√‡ª≈’ˬπ·ª≈ß√Ÿª¢Õß·§¥‡¡’ˬ¡„π¢≥–∑’ˇ¡◊ËÕ§«“¡°√–¥â“߇æ‘Ë¡¢÷Èπ®–‰ª¡’º≈∑”„Àâ°“√∑”ªØ‘°‘√‘¬“¢Õß·§¥‡¡’ˬ¡°—∫ humic acid ≈¥≈ß

„π°“√‡ª≈’ˬπ·ª≈ß√Ÿª‚¥¬ªØ‘°‘√‘¬“¢ÕßπÈ” ·§¥‡¡’ˬ¡®–√«¡µ—«‡ªìπ “√-ª√–°Õ∫°—∫ hydroxyl group (OH-) ‡™àπ CdOH+, Cd(OH)2 (aq.), Cd(OH)3-,·≈– Cd(OH)42- ·§¥‡¡’ˬ¡∑’Ë≈–≈“¬πÈ”‡°◊Õ∫∑—ÈßÀ¡¥®–Õ¬Ÿà„π√Ÿª¢ÕßÕ‘ÕÕπ∫«°∑’Ë¡’«“‡≈π´’Ë 2 (divalent cation) ·µà‡¡◊ËÕπÈ”¡’ pH Ÿß¢÷Èπ (pH ¡“°°«à“ 9) ·§¥‡¡’ˬ¡®–‡ª≈’ˬπ‰ªÕ¬Ÿà„π√Ÿª∑’ˇªìπ¢Õß·¢Á߉¡à≈–≈“¬πÈ” §◊Õ Cd(OH)2 ‚¥¬ªØ‘°‘√‘¬“¢â“ß≈à“ßπ’È

Cd++ + 2OH- Cd(OH)2 ↓

7.2 °“√√«¡µ—« (sorption)

„π°√–∫«π°“√ sorption ‚¥¬∑’Ë·§¥‡¡’ˬ¡µ‘¥Õ¬Ÿà°—∫º‘«¢Õ߇°≈◊Õ·√à À√◊Õhydrous metal oxides À√◊Õ “√Õ‘π∑√’¬åµà“ßÊ ‡ªìπ°“√¢®—¥‡Õ“·§¥‡¡’ˬ¡ÕÕ°¡“‰¥â¡“°°«à“°“√∑”„Àâµ°µ–°Õπ (precipitation) ®“°°“√»÷°…“∑’ˇ°’ˬ«¢âÕß°—∫°“√ sorption·§¥‡¡’ˬ¡„Àⵑ¥°—∫¥‘π‡À𒬫 “√Õ‘π∑√’¬å hydrous iron, aluminum or manganeseoxide ·≈– carbonate minerals æ∫«à“·§¥‡¡’ˬ¡„πµ–°Õπ∑’ËπÕπ°âπ®–¡’¡“°°«à“„ππÈ”

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34 “√Õ—πµ√“¬

®“°°“√»÷°…“¢Õß Zuzuki ·≈–§≥– (1979) „π·À≈àßπÈ”∑’Ë¡’ªí≠À“¡≈¿“«–„πª√–‡∑»≠’˪ÿÉπ ∑’Ë√“¬ß“π‰«â„π EPA (1979) æ∫«à“ ª√‘¡“≥·§¥‡¡’ˬ¡„π¥‘πµ–°Õπ(sediment) ®–‡ªìπ —¥ à«π‚¥¬µ√ß°—∫ª√‘¡“≥ “√Õ‘π∑√’¬å∑’Ë Ÿ≠À“¬‰ª‡ªìπ¥‘πµ–°Õπ´÷Ëß™’È„Àâ‡ÀÁπ«à“ “√Õ‘π∑√’¬å ‡ªìπ à«π ”§—≠∑’Ë∑”„À⇰‘¥°“√ – ¡¢Õß·§¥‡¡’ˬ¡„πµ–°Õπ¥‘ππÕ°®“°π—Èπ ®“°°“√»÷°…“„πÀâÕߪؑ∫—µ‘°“√æ∫«à“ °“√ sorption ·§¥‡¡’ˬ¡¢Õߥ‘πµ–°Õπ®–¡’§«“¡ —¡æ—π∏å°—∫ª√‘¡“≥ “√Õ‘π∑√’¬å∑’ËÕ¬Ÿà„π¥‘πµ–°Õπ ‚¥¬®–‡ªìπ‰ªµ“¡ ¡°“√¢Õß Freundlich §◊Õ

O.M. = KC1/n

‚¥¬∑’Ë

O.M. = organic matter ( “√Õ‘π∑√’¬å)

C = ª√‘¡“≥·§¥‡¡’ˬ¡„ππÈ”

k & n = §à“§ß∑’Ë®“°°“√∑¥≈Õß

´÷Ëߺ≈®“°°“√∑¥≈Õß¡’¢âÕ —߇°µ«à“ „π·À≈àßπÈ”∑’Ë¡’ªí≠À“¡≈æ‘… ª√‘¡“≥ “√Õ‘π∑√’¬å∑’ËÕ¬Ÿà„π√Ÿª¢Õß “√·¢«π≈Õ¬®–¡’Õ‘∑∏‘æ≈Õ¬à“ß¡“°µàÕ°“√‡§≈◊ËÕπ¬â“¬µ—«¢Õß·§¥‡¡’ˬ¡

®“°°“√»÷°…“¢Õß Gardiner (1974) „πÀâÕß∑¥≈Õ߇°’ˬ«°—∫°“√ sorption¢Õß·§¥‡¡’ˬ¡¥â«¬‚§≈π (mud solids) ¥‘π‡À𒬫À√◊Õ´‘≈‘°“ ·≈– humic materials∑’Ë√“¬ß“π‰«â„π EPA (1979) æ∫«à“ ‚§≈π®– “¡“√∂¥Ÿ¥´—∫·§¥‡¡’ˬ¡„π·À≈àßπÈ”®◊¥‰¥â¥’·≈–æ∫«à“ concentration factor ¢Õß·§¥‡¡’ˬ¡„π‚§≈π¡’§à“ 5,000-50,000 ´÷Ëß®–¢÷ÈπÕ¬Ÿà°—∫™π‘¥¢Õß‚§≈π ª√‘¡“≥·§¥‡¡’ˬ¡„ππÈ” ™π‘¥¢Õß·§¥‡¡’ˬ¡ µ≈Õ¥®πÕÿ≥À¿Ÿ¡‘pH ·≈–§«“¡°√–¥â“ߢÕßπÈ” πÕ°®“°π—Èπ¬—ßæ∫«à“„π‚§≈π®–¡’ humic materialª√–°Õ∫Õ¬Ÿà´÷Ë߇ªìπ à«π ”§—≠„π°“√¥Ÿ¥´—∫·§¥‡¡’ˬ¡¥â«¬

®“°°“√»÷°…“¢Õß Perhac (1974) ∑’Ë√“¬ß“π‰«â„π EPA (1979) ‚¥¬°“√»÷°…“„π·¡àπÈ” Tennesse ´÷Ë߉¡à¡’ªí≠À“¡≈æ‘… æ∫«à“ª√‘¡“≥·§¥‡¡’ˬ¡„πµ–°ÕππÕπ°âπ®–‡°’ˬ«¢âÕß°—∫ carbonates ·≈– iron oxides (‡ªìπ à«ππâÕ¬) ¥—ßπ—Èπ ®–æ∫«à“¡’·§¥‡¡’ˬ¡ª√–°Õ∫‡ªìπÕ‘ÕÕπ∫«°Õ¬Ÿà„π “√ª√–°Õ∫ carbonate

Huang ·≈–§≥– (1977) ‰¥â√“¬ß“π‰«â„π EPA (1979) «à“ªí®®—¬ ”§—≠∑’Ë¡’µàÕ°“√¥Ÿ¥´—∫¢Õß·§¥‡¡’ˬ¡„π¥‘π silicon ·≈– aluminum oxide §◊Õ pH °≈à“«§◊Õ

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·§¥‡¡’ˬ¡ (Cadmium) 35

„π ¿“«–∑’ˇªìπ¥à“ß °“√¥Ÿ¥´—∫®–‡æ‘Ë¡¡“°¢÷Èπ ·≈–‡¡◊ËÕ pH ≈¥≈ߵ˔°«à“ 6 À√◊Õ 7 ®–∑”„Àâ·§¥‡¡’ˬ¡∑’Ë∂Ÿ°¥Ÿ¥´—∫Õ¬Ÿà∫π “√‡À≈à“π—ÈπÀ≈ÿ¥ÕÕ°¡“

‚¥¬ √ÿª sorption process ‡ªìπ°√–∫«π°“√ ”§—≠∑’Ë≈¥ª√‘¡“≥·§¥‡¡’ˬ¡„π·À≈àßπÈ” ‚¥¬‡§≈◊ËÕπ¬â“¬‰ª – ¡Õ¬Ÿà„πµ–°Õπ ·≈–·§¥‡¡’ˬ¡∑’ËÕ¬Ÿà„πµ–°Õπ¥‘π ®–∂Ÿ°°√–®“¬ÕÕ°¡“„π™—ÈππÈ”‰¥â ‡¡◊ËÕ§«“¡‡§Á¡¢ÕßπÈ”‡æ‘Ë¡¢÷Èπ §◊Õ‡°‘¥°“√ desorption

7.3 °“√√–‡À¬‡ªìπ‰Õ (evaporation)

·§¥‡¡’ˬ¡®“°·À≈àßπÈ”‰¡à “¡“√∂®–√–‡À¬°≈“¬‡ªìπ‰Õ‡æ◊ËÕ∑”ªØ‘°‘√‘¬“‡ª≈’Ë¬π‰ª‡ªìπ√ŸªÕ◊Ëπ ÷Ëß·µ°µà“߉ª®“°ª√Õ∑ ∑—ÈßÊ ∑’Ë·§¥‡¡’ˬ¡Õ¬Ÿà∂—¥≈ß¡“„π§Õ≈—¡π凥’¬«°—π¢Õßµ“√“ßæ’√‘ÕÕ¥‘§ ¥—ßπ—Èπ ªØ‘°‘√‘¬“∑“߇§¡’®÷ߧ≈⓬§≈÷ß°—π ·µàªØ‘°‘√‘¬“∑“ß™’«– ‡™àπ methylationof cadmium °≈—∫‰¡à¡’ª√“°Ø

7.4 °“√‡ª≈’Ë¬π‰ª‚¥¬ªØ‘°‘√‘¬“¢ÕßÕÕ°´‘‡®π (oxidation)

®“°°“√»÷°…“ªØ‘°‘√‘¬“ oxidation ¢Õßµ–°Õπ ‚¥¬ Khalid ·≈–§≥–(1978) ∑’Ë√“¬ß“π‰«â„π IRPTC (1978) æ∫«à“‡¡◊ËÕ dissolved oxygen ‡æ‘Ë¡¢÷Èπ pH≈¥≈ß ®–¡’º≈∑”„Àâ¡’·§¥‡¡’ˬ¡≈–≈“¬„ππÈ”‡æ‘Ë¡¢÷Èπ„π√Ÿª¢Õß hydrated divalentcations, soluble Cl- ·≈– SO4

=

‚¥¬ √ÿª °√–∫«π°“√µà“ßÊ ∑“ß∏√√¡™“µ‘À√◊Õ„π ‘Ëß·«¥≈âÕ¡∑’Ë°≈à“«¡“·≈â«¢â“ßµâπ¬—߉¡à “¡“√∂∑”≈“¬·§¥‡¡’ˬ¡‰¥â ¥—ßπ—Èπ ·§¥‡¡’ˬ¡∑’Ë·æ√à°√–®“¬Õ¬Ÿà„π ‘Ëß·«¥≈âÕ¡®–¬—ߧßÕ¬Ÿà„π ‘Ëß·«¥≈âÕ¡‡æ’¬ß·µà¬â“¬®“°∑’ËÀπ÷Ë߉ª¬—ßÕ’°∑’ËÀπ÷Ëß ·≈–¬—ß¡’º≈∑”„À⇰‘¥°“√ – ¡Õ¬Ÿà ≥ ∑’Ë„¥∑’ËÀπ÷Ëß ‡™àπ „π¥‘πÀ√◊Õ„π ‘Ëß¡’™’«‘µ∫“ß™π‘¥ ·≈–°“√ª≈àÕ¬À√◊Õ∑‘Èß·§¥‡¡’ˬ¡ÕÕ° Ÿà ‘Ëß·«¥≈âÕ¡®–‡ªìπ°“√‡æ‘Ë¡°“√ – ¡¥—ß°≈à“«¢÷Èπ ©–π—Èπ °“√§«∫§ÿ¡°“√·æ√à°√–®“¬¢Õß·§¥‡¡’ˬ¡®“°∑—Èß·À≈àß∏√√¡™“µ‘ À√◊Õ¡πÿ…¬å‡ªìπºŸâ°àÕ¢÷Èπ®÷ß®”‡ªìπ∑’Ë®–µâÕ߇ΩÑ“√–«—ß ∑—Èßπ’È ‡æ◊ËÕ≈¥°“√ – ¡„π ‘Ëß·«¥≈âÕ¡

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36 “√Õ—πµ√“¬

8§«“¡‡ªìπ‰ª„π ‘Ëß·«¥≈âÕ¡(Environmental fate)

°“√‡¢â“ Ÿà ‘Ëß·«¥≈âÕ¡¢Õß “√·§¥‡¡’ˬ¡ Õ“®‡¢â“‰ª„π ‘Ëß·«¥≈âÕ¡‚¥¬ºà“πµ—«°≈“ßµà“ßÊ „πª√‘¡“≥∑’Ë·µ°µà“ß°—π ¥—ß· ¥ß„πµ“√“ß∑’Ë 5

µ“√“ß∑’Ë 5 ª√‘¡“≥·§¥‡¡’ˬ¡∑’ËÕÕ° Ÿà ‘Ëß·«¥≈âÕ¡ (∑–‡≈)1/

ºà“πµ—«°≈“ߪ√‘¡“≥

∂“π∑’Ë(‡¡µ√‘°µ—π/ªï)

πÈ”À≈“° (run off) 1 Õà“«·§≈‘øÕ√å‡π’¬∑“ßµÕπ„µâ

πÈ”Ωπ 230 ∑–‡≈‡Àπ◊Õ

·¡àπÈ” 120 Õà“« St. Lawrence ·§π“¥“

πÈ”À≈àÕ‡¬Áπ 0.3 Õà“«·§≈‘øÕ√å‡π’¬∑“ßµÕπ„µâ(®“° ∂“π’º≈‘µ‰øøÑ“ 8 ∂“π’)

°“√ª≈àÕ¬πÈ”∑‘Èß®“°™ÿ¡™π 55.4/45.0 ™“¬Ωíòß∑–‡≈·§≈‘øÕ√å‡π’¬∑“ßµÕπ„µâ

(2517/2519)

1/ IRPTC (1978), Data Profiles for Chemicals for the Evaluation of theirHazards to the Environment of the Mediterranean Sea.

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·§¥‡¡’ˬ¡ (Cadmium) 37

9°“√·æ√à ≈“¬¢Õß “√‡§¡’‚¥¬™’««‘∏’(Chemobiokinetics)

9.1 °“√¥Ÿ¥´÷¡ (absorption)

°“√¥Ÿ¥´÷¡¢Õß·§¥‡¡’ˬ¡„π√à“ß°“¬®–¢÷ÈπÕ¬Ÿà°—∫°“√ Ÿ∫∫ÿÀ√’Ë·≈–Õ—µ√“°“√¥Ÿ¥´÷¡·§¥‡¡’ˬ¡ºà“π°“√°‘π ´÷Ëßªí®®—¬ ”§—≠∑’Ë¡’º≈µàÕÕ—µ√“π’È §◊Õ ª√‘¡“≥‡À≈Á°∑’Ë¡’ – ¡Õ¬Ÿà„π√à“ß°“¬‚¥¬‡©≈’ˬ՗µ√“°“√¥Ÿ¥´÷¡ª√–¡“≥«—π≈– 1.6-12.5 µg ( ”À√—∫ºŸâ„À≠à·∂∫¬ÿ‚√ª) ”À√—∫°“√µ√«®æ∫ª√‘¡“≥·§¥‡¡’ˬ¡„π‡≈◊Õ¥®–™’È„Àâ‡ÀÁπ«à“ à«π„À≠à‡ªìπº≈¡“®“°°“√¥Ÿ¥´÷¡·§¥‡¡’ˬ¡‡¢â“ Ÿà√à“ß°“¬„π™à«ß√–¬–∑’˺à“π¡“‰¡à°’ˇ¥◊Õπ

9.2 °“√·æ√à°√–®“¬ (distribution)

·§¥‡¡’ˬ¡‡ªìπ “√∑’Ë¡’§ÿ≥ ¡∫—µ‘„π·ßà¢Õßæ‘… – ¡ Ÿß ‡π◊ËÕß®“°¡’«ß®√§√÷Ëß™’«‘µ (half-life) ¡“°°«à“ 10 ªï °“√ – ¡®–¡“°¢÷Èπµ“¡Õ“¬ÿ (®–· ¥ßº≈Õ¬à“ß™â“∑’Ë ÿ¥‡¡◊ËÕÕ“¬ÿ 50-60 ªï) ª√‘¡“≥§√÷ËßÀπ÷ËߢÕß·§¥‡¡’ˬ¡„π√à“ß°“¬®–∂Ÿ°‡°Á∫ – ¡Õ¬Ÿà∑’˵—∫·≈–‰µ

ª√‘¡“≥·§¥‡¡’ˬ¡‚¥¬‡©≈’ˬ„π kidney cortex ∑’Ëæ∫„𙓬 «’‡¥πÕ“¬ÿ40-50 ªï ¡’§à“ 22-29 µg/g ·µà§à“‡©≈’ˬ∑’Ëæ∫„𙓬‡¬Õ√¡—π §◊Õ 72 µg/g

ª√‘¡“≥·§¥‡¡’ˬ¡∑’Ë¡’Õ¬Ÿà„π√à“ß°“¬®“°°“√§“¥ª√–¡“≥æ∫«à“„π·µà≈–ª√–‡∑»¡’ª√‘¡“≥·µ°µà“ß°—π¡“° °≈à“«§◊Õ ™“« «’‡¥π„π™à«ßÕ“¬ÿ 40-50 ªï∑’ˉ¡à Ÿ∫∫ÿÀ√’Ë¡’·§¥‡¡’ˬ¡„π√à“ß°“¬ª√–¡“≥ 5-6 mg à«π∑’Ë Ÿ∫∫ÿÀ√’Ë¡’§à“ª√–¡“≥ 9-10 mg ‡¡◊ËÕ‡∑’¬∫°—∫™“«Õ‡¡√‘°—π„π∫ÿ§§≈°≈ÿࡇ¥’¬«°—πæ∫«à“ ºŸâ∑’ˉ¡à Ÿ∫∫ÿÀ√’Ë¡’ª√–¡“≥ 19.3 mg·≈–ºŸâ∑’Ë Ÿ∫∫ÿÀ√’Ë¡’ Ÿß∂÷ß 33.5 mg

9.3 Õ—µ√“°“√ – ¡ (bioconcentration factor)

‘Ëß¡’™’«‘µ‡°◊Õ∫∑ÿ°™π‘¥¡’‚Õ°“ ¡“°„π°“√∑’Ë®–‡°Á∫ – ¡·§¥‡¡’ˬ¡ ‡π◊ËÕß®“°·§¥‡¡’ˬ¡¡’§ÿ≥ ¡∫—µ‘∑“߇§¡’∑’˧≈⓬°—∫ —ß°– ’ ∑”„Àâ·§¥‡¡’ˬ¡ “¡“√∂‡¢â“‰ª·∑π∑’Ë —ß°– ’„π‡ÕÁπ‰´¡å∫“ß™π‘¥ ¥â«¬‡Àµÿπ’È∑”„ÀâÀπâ“∑’Ë„π°“√ metabolic ∂Ÿ°∑”„À⇪≈’Ë¬π‰ª®“°ª°µ‘

·§¥‡¡’ˬ¡ “¡“√∂‰ª – ¡Õ¬Ÿà„π‡π◊ÈÕ‡¬◊ËÕ¢Õß ‘Ëß¡’™’«‘µ„ππÈ”‰¥â „πª√‘¡“≥∑’Ë Ÿß°«à“∑’Ëæ∫„ππÈ”µ—Èß·µàÀ≈“¬√âÕ¬‡∑à“®π∂÷ßÀ≈“¬æ—π‡∑à“ „πª≈“ à«π„À≠à®–‡°Á∫ – ¡·§¥‡¡’ˬ¡‰«â∑’˵—∫ ‰µ ≈”‰ â ·≈–‡Àß◊Õ° à«π∑’ˇÀ≈◊Õ®”π«ππâÕ¬®–‡°Á∫‰«â∑’ˇπ◊ÈÕ

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38 “√Õ—πµ√“¬

ª≈“®–‡°Á∫ – ¡·§¥‡¡’ˬ¡‰¥âπâÕ¬°«à“ “À√à“¬ ÀÕ¬ ≈Ÿ°πÈ”¬ÿß À√◊բ⓫ ´÷Ëß°“√ – ¡µ—«¢Õß·§¥‡¡’ˬ¡®–¡’§«“¡ —¡æ—π∏åÕ¬à“ß¡“°°—∫§«“¡ “¡“√∂„π°“√·≈°‡ª≈’ˬπcation °≈à“«§◊Õ ∂ⓧ«“¡ “¡“√∂„π°“√·≈°‡ª≈’ˬπ cation „π¥‘π‡æ‘Ë¡¢÷Èπ √–¥—∫ª√‘¡“≥·§¥‡¡’ˬ¡„π ‘Ëß¡’™’«‘µπ—Èπ°Á≈¥≈ß πÕ°®“°π’Ȭ—ß¡’√“¬ß“π«à“°“√ – ¡·§¥‡¡’ˬ¡„π —µ«å‰¡à¡’°√–¥Ÿ° —πÀ≈—ß (‡™àπ ÀÕ¬ ≈Ÿ°πÈ”¬ÿß) ®–¡“°°«à“°“√ – ¡„π “À√à“¬À√◊Õ„π¢â“«·µà„π°√≥’∑’Ë¥‘π¡’§«“¡ “¡“√∂„π°“√·≈°‡ª≈’ˬπ cation ‰¥âπâÕ¬ ®–∑”„Àâ “À√à“¬ “¡“√∂ – ¡·§¥‡¡’ˬ¡‰¥â¡“°°«à“æ«° —µ«å∑’ˉ¡à¡’°√–¥Ÿ° —πÀ≈—ß∂÷ß 4 ‡∑à“

„π°“√√—∫‡Õ“·§¥‡¡’ˬ¡‡¢â“‰ª§√—Èß·√°æ∫«à“ ‘Ëß¡’™’«‘µ∑’ËÕ¬Ÿà„ππÈ”°√–¥â“ß®–√—∫‡¢â“‰ª‰¥â‡√Á«°«à“ ‘Ëß¡’™’«‘µ∑’ËÕ¬Ÿà„ππÈ”ÕàÕπ ·µà∂â“æ‘®“√≥“∂÷ߪ√‘¡“≥·§¥‡¡’ˬ¡∑—ÈßÀ¡¥∑’Ë√—∫‡¢â“‰ªª√“°Ø«à“ ‘Ëß¡’™’«‘µ∑’ËÕ¬Ÿà„ππÈ”ÕàÕπ®–‡°Á∫ – ¡‡¢â“ Ÿà√à“ß°“¬¡“°°«à“

µ“√“ß∑’Ë 6 §à“ Bioconcentration Factors ”À√—∫·§¥‡¡’ˬ¡1/

ª√–‡¿∑¢Õß ‘Ëß¡’™’«‘µ bioconcentration factor2/

æ◊™∑–‡≈ 1,000

—µ«å‰¡à¡’°√–¥Ÿ° —πÀ≈—ß„π∑–‡≈ 250,000

ª≈“∑–‡≈ 3,000

æ◊™πÈ”®◊¥ 1,000

—µ«å‰¡à¡’°√–¥Ÿ° —πÀ≈—ß„ππÈ”®◊¥ 4,000

ª≈“πÈ”®◊¥ 3,000

1/ Ref: EPA (1979), Water-Related Environmental Fate of 129 PriorityPollutants: Volume I

2/ Bioconcentration Factor ‡ªìπÕ—µ√“ à«π√–À«à“ߧ«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡„π ‘Ëß¡’™’«‘µ (πÈ”Àπ—°‡ªï¬°) À“√¥â«¬§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡„ππÈ”

9.4 °“√¢—∫∂à“¬ (excretion)

·§¥‡¡’ˬ¡∂Ÿ°¢—∫ÕÕ°®“°√à“ß°“¬‰¥â‚¥¬ºà“π∑“߉µ ·µàÕ—µ√“°“√¢—∫ÕÕ°®–πâÕ¬°«à“Õ—µ√“°“√¥Ÿ¥´÷¡ ®÷ß¡’º≈∑”„À⇰‘¥°“√ – ¡„π√à“ß°“¬ ‚¥¬‡©æ“–„π‰µ·≈–µ—∫

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·§¥‡¡’ˬ¡ (Cadmium) 39

πÕ°®“°π’Ȫ√‘¡“≥·§¥‡¡’ˬ¡„πªí “«–®– –∑âÕπ„Àâ‡ÀÁπ«à“„π√à“ß°“¬¡’ª√‘¡“≥·§¥‡¡’ˬ¡Õ¬Ÿà„π√–¥—∫∑’ˇªìπÕ—πµ√“¬µàÕ√à“ß°“¬

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40 “√Õ—πµ√“¬

10§«“¡‡ªìπæ‘…∑’Ë¡’µàÕ —µ«å‡≈’Ȭß≈Ÿ°¥â«¬π¡

(Mammalian toxicity studies)

·§¥‡¡’ˬ¡ “¡“√∂∑”„À⇰‘¥æ‘… – ¡‰¥â„π¡πÿ…¬å ‡™àπ ª√‘¡“≥·§¥‡¡’ˬ¡∑—ÈßÀ¡¥„π√à“ß°“¬®–‡æ‘Ë¡¢÷Èπµ“¡Õ“¬ÿ °“√¢—∫‡Õ“·§¥‡¡’ˬ¡∑’Ë√à“ß°“¬¥Ÿ¥´÷¡‡¢â“‰ª·≈â«ÕÕ°®“°√à“ß°“¬‡ªìπ‰ª§àÕπ¢â“ߙⓡ“° ·≈–«ß®√§√÷Ëß™’«‘µ¢Õß·§¥‡¡’ˬ¡„π§π§àÕπ¢â“߬“« 16-33 ªï·≈–‚¥¬∑—Ë«Ê ‰ª √à“ß°“¬ “¡“√∂√—∫·§¥‡¡’ˬ¡‡¢â“‰ª‚¥¬ºà“π∑“ß°“√°‘π‡ªìπ à«π„À≠෵ຟâ∑’Ë Ÿ∫∫ÿÀ√’Ë®—¥®–∑”„Àâ°“√√—∫·§¥‡¡’ˬ¡‡¢â“ Ÿà√à“ß°“¬‡æ‘Ë¡¢÷Èπ ·≈–ª√‘¡“≥·§¥‡¡’ˬ¡∑—ÈßÀ¡¥„π√à“ß°“¬§√÷ËßÀπ÷Ëß®–‰ª – ¡Õ¬Ÿà∑’ˉµ·≈–µ—∫

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ium)

41

µ“√“ß∑’Ë 7 §«“¡‡ªìπæ‘…µàÕ —µ«å‡≈’Ȭß≈Ÿ°¥â«¬π¡‡π◊ËÕß®“° cadmium chloride1/

ª√‘¡“≥∑’Ë∑”„À⇰‘¥æ‘…(¡‘≈≈‘°√—¡/°‘‚≈°√—¡- √–¬–‡«≈“ —¡º— °“√‡¢â“ Ÿà√à“ß°“¬ —µ«å∑¥≈Õß º≈∑’ˇ°‘¥¢÷ÈππÈ”Àπ—°µ—«/«—π)

88 - °“√°‘π ÀπŸ (rat) LD502/

63 - °“√°‘π ÀπŸµ–‡¿“ LD502/

(guinea pig)

33 (300 ppm) 70 «—π °“√¥◊Ë¡πÈ” °√–µà“¬ ¬—∫¬—Èß°“√∑”ß“π¢Õß¿Ÿ¡‘§ÿâ¡°—π‚√§

16 (300 ppm Cd) 54 —ª¥“Àå °“√°‘π °√–µà“¬ ‚≈À‘µ®“ß ªí “«–¡’‚ª√µ’π ·≈–πÈ”µ“≈¡“°º‘¥ª°µ‘ ‡∫◊ËÕÕ“À“√ ·≈–πÈ”Àπ—°≈¥

9 §√—È߇¥’¬« ©’¥‡¢â“„µâº‘«Àπ—ß °√–µà“¬ ∑”≈“¬‡´≈≈å≈Ÿ°Õ—≥±–¿“¬„π 5-21 «—π·≈–¬—ß¡’º≈µàÕµ—∫ ‰µ ·≈–¡â“¡

6.25 (50 ppm) 3 ‡¥◊Õπ °“√¥◊Ë¡πÈ” ÀπŸ (Õ“¬ÿ 34 «—π) √–¥—∫ hemoglobin ≈¥≈ß

4.1 (2.5 mgCd/kg) §√—È߇¥’¬« ©’¥‡¢â“„µâº‘«Àπ—ß ÀπŸ (rat) ‡°‘¥·º≈∑’˪¡ª√– “∑

3.7 (0.02 mmole/kg) §√—È߇¥’¬« ©’¥‡¢â“„µâº‘«Àπ—ß ÀπŸµ—«‡¡’¬ ‡´≈≈å√—߉¢àµ“¬

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42

“√Õ

—πµ

√“¬µ“√“ß∑’Ë 7 (µàÕ)

ª√‘¡“≥∑’Ë∑”„À⇰‘¥æ‘…(¡‘≈≈‘°√—¡/°‘‚≈°√—¡- √–¬–‡«≈“ —¡º— °“√‡¢â“ Ÿà√à“ß°“¬ —µ«å∑¥≈Õß º≈∑’ˇ°‘¥¢÷ÈππÈ”Àπ—°µ—«/«—π)

2.0 7 «—π (2 §√—Èß/«—π ©’¥‡¢â“„µâº‘«Àπ—ß ÀπŸ ¡’º≈µàÕµ—∫ÕàÕπ§√—Èß≈– 1.0 mg/kg)

1.4 (0.85 mgCd/kg) §√—È߇¥’¬« ©’¥‡¢â“„µâº‘«Àπ—ß ÀπŸµ—«ºŸâ ∑”„À⇴≈≈å≈Ÿ°Õ—≥±–µ“¬

1.0 45 «—π ©’¥‡¢â“∑âÕß ÀπŸ ¡’º≈µàÕµàÕ¡À¡«°‰µ

0.94 (7.5 µg/g water) 1 ªï °“√¥◊Ë¡πÈ” ÀπŸµ—«‡¡’¬ ¡’º≈µàÕ‰µ

0.82 (10 ppm Cd) 3 —ª¥“Àå °“√°‘π ÀπŸ ‡°‘¥·º≈∑’Ë°√–¥Ÿ°

0.75 (15 ppm) 6 ‡¥◊Õπ °“√°‘π ÀπŸ ‚≈À‘µ®“ß øíπÀπâ“®–¢“«´’¥(Õ“¬ÿ 3 —ª¥“Àå)

0.63 (5 µg/g water) 1 ªï °“√¥◊Ë¡πÈ” ÀπŸ §«“¡¥—π‚≈À‘µ Ÿß‡π◊ËÕß®“°§«“¡º‘¥ª°µ‘¢Õ߉µ·≈–‡°‘¥·º≈∑’ˇ âπ‡≈◊Õ¥

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ium)

43

µ“√“ß∑’Ë 7 (µàÕ)

ª√‘¡“≥∑’Ë∑”„À⇰‘¥æ‘…(¡‘≈≈‘°√—¡/°‘‚≈°√—¡- √–¬–‡«≈“ —¡º— °“√‡¢â“ Ÿà√à“ß°“¬ —µ«å∑¥≈Õß º≈∑’ˇ°‘¥¢÷ÈππÈ”Àπ—°µ—«/«—π)

0.25 11 —ª¥“Àå ©’¥‡¢â“„µâº‘«Àπ—ß °√–µà“¬ ·º≈∑’ˉµ(5 §√—Èß/ —ª¥“Àå)

0.2 (1 µgCd/g water) 335 «—π °“√¥◊Ë¡πÈ” ÀπŸ ¡’º≈µàÕµ—∫

1/ Ref. : IRPTC (1978), Data Profiles for Chemicals for the Evaluation of their Hazards to the Environmental ofthe Meditervanean Sea.

2/ LD50 = Median Lethal Dose §◊Õª√‘¡“≥ “√æ‘…∑’Ë¡’º≈∑”„Àâ —µ«å∑¥≈Õßµ“¬‰ª 50% À√◊Õ§√÷ËßÀπ÷Ëß

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44 “√Õ—πµ√“¬

µ“√“ß∑’Ë 8 §«“¡‡ªìπæ‘…µàÕ —µ«å‡≈’Ȭß≈Ÿ°¥â«¬π¡®“°°“√À“¬„® cadmium chloride1/

ª√‘¡“≥∑’ËÀ“¬„® √–¬–‡«≈“ —µ«åº≈∑’ˇ°‘¥¢÷Èπ

‡¢â“‰ª (mg/m3) —¡º— ∑¥≈Õß

520 (320 mgCd/m3) 30 π“∑’ ÿπ—¢ LD902/

522 (0.32 mgCd/l) 30 π“∑’ ÿπ—¢ LC503/

420 30 π“∑’ ÿπ—¢ LC904/

10 2 ™—Ë«‚¡ß ÀπŸ ‡°‘¥ªØ‘°‘√‘¬“∑“ß™’«‡§¡’´÷Ëß®–¡’º≈∑”≈“¬ªÕ¥

8 30 π“∑’ ÿπ—¢ LC904/

0.2 66 «—π ÀπŸ πÈ”Àπ—°µ—«≈¥≈ß ·µàπÈ”Àπ—°ªÕ¥‡æ‘Ë¡¢÷Èπ‡π◊ÈÕ‡¬◊ËÕ„π∂ÿß≈¡ªÕ¥æÕßµ—«∑”„Àâ∂ÿß≈¡ªÕ¥¡’¢π“¥„À≠à¢÷Èπ ·≈–∑”„Àâ∂÷ßµ“¬‰¥â

0.2 7 «—π ÀπŸ ∑”„ÀâπÈ”Àπ—°ªÕ¥‡æ‘Ë¡¢÷Èπ·≈–∑”„Àâ∂ÿß≈¡ªÕ¥¡’¢π“¥„À≠à¢÷Èπ

0.05 7 «—π ÀπŸ ∑”„Àâ∂ÿß≈¡ªÕ¥¡’¢π“¥„À≠à¢÷Èπ

1/ Ref. : IRPTC (1978), Data Profile for Chemicals for the Evaluation oftheir Hazards to the Environment of the Mediteranean Sea.

2/ LD90 = Lethal Dose to 90% §◊Õ ª√‘¡“≥ “√æ‘…∑’Ë “¡“√∂∑”„Àâ —µ«å∑¥≈Õßµ“¬‰ª 90%

3/ LC50 = Median Lethal Concentration §◊Õ ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß “√æ‘…„π ¿“æ·«¥≈âÕ¡∑’Ë∑”„Àâ —µ«å∑¥≈Õßµ“¬‰ª§√÷ËßÀπ÷Ëß

4/ LC90 = Lethal Concentration to 90% §◊Õ ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß “√æ‘…„π ¿“æ·«¥≈âÕ¡∑’Ë∑”„Àâ —µ«å∑¥≈Õßµ“¬‰ª 90%

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·§¥‡¡’ˬ¡ (Cadmium) 45

“√ª√–°Õ∫¢Õß·§¥‡¡’ˬ¡®–¡’§«“¡‡ªìπæ‘…´÷Ëß· ¥ß„π√Ÿª LD50 ¡“°πâÕ¬·µ°µà“ß°—π‰ª ¢÷ÈπÕ¬Ÿà°—∫™π‘¥¢Õß —µ«å∑¥≈Õß (µ“√“ß∑’Ë 9)

µ“√“ß∑’Ë 9 §à“ LD50 ¢Õß “√ª√–°Õ∫·§¥‡¡’ˬ¡1/

“√ª√–°Õ∫·§¥‡¡’ˬ¡™π‘¥¢Õß ∑“߇¢â“ Ÿà LD50

—µ«å∑¥≈Õß √à“ß°“¬ (mg/kg)

cadmium acetate rat p.o. 333

cadmium bromide rat p.o. 322

cadmium chloride rat p.o. 88

rat p.o. 202

quinea-pig p.o. 63

mouse p.o. 5

mouse p.o. 175

cadmium carbonate rat p.o. 659

rat p.o. 438

cadmium cyanide rat p.o. 16

cadmium fluoroborate rat p.o. 250

cadmium fluoride quinea-pig p.o. 150

cadmium fluorosilicate rat p.o. 100

cadmium formate rat p.o. 162

cadmium iodide rat p.o. 222

cadmium nitrate rat p.o. 397

cadmium oxide rat p.o. 72

rat p.o. 123

rat p.o. 130

rat p.o. 296

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46 “√Õ—πµ√“¬

µ“√“ß∑’Ë 9 (µàÕ)

“√ª√–°Õ∫·§¥‡¡’ˬ¡™π‘¥¢Õß ∑“߇¢â“ Ÿà LD50

—µ«å∑¥≈Õß √à“ß°“¬ (mg/kg)

cadmium perchlorate rat p.o. 875

cadmium (metal) powder rat p.o. 2,330

cadmium propionate rat p.o. 300

cadmium selenide rat p.o. > 5,000

cadmium stearate rat p.o. 1,225

cadmium succinate rat p.o. 660

cadmium sulphate rat p.o. 357

cadmium sulphide rat p.o. > 5,000

cadmium acetate rat I.P. 74.9

cadmium chloride rat I.M. 25

rabbit I.V. 2.5-3.0

mouse I.P. 4.3

mouse I.P. < 6.5

cadmium oxide mouse S.C. 94

rat I.V. 25

cadmium succinate mouse I.P. 270

cadmium lactate mouse S.C. 13.9

1/ Ref: CEC (1978), Criteria (Dose/Effect Relationships) for Cadmium

À¡“¬‡Àµÿ P.O. = per os (‚¥¬∑“ߪ“°)

I.P. = intraperitoneal (‚¥¬°“√©’¥‡¢â“™àÕß∑âÕß)

I.M. = intramuscular (‚¥¬°“√©’¥‡¢â“°≈â“¡‡π◊ÈÕ)

I.V. = intravenous (‚¥¬°“√©’¥‡¢â“‡ âπ‡≈◊Õ¥)

S.C. = subcutaneous (‚¥¬°“√©’¥‡¢â“„µâº‘«Àπ—ß)

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·§¥‡¡’ˬ¡ (Cadmium) 47

11§«“¡‡ªìπæ‘…(Toxicological effects)

11.1 §«“¡‡ªìπæ‘…·∫∫‡©’¬∫æ≈—π (acute effects)

11.1.1 §«“¡‡ªìπæ‘…µàÕ√–∫∫∑“߇¥‘πÕ“À“√ (effect on the gastro-intestinal tract)

√–∫∫∑“߇¥‘πÕ“À“√®–‡ªìπ√–∫∫·√°„π√à“ß°“¬∑’Ë®–‰¥â√—∫æ‘…‡¡◊ËÕ√à“ß°“¬‰¥â√—∫·§¥‡¡’ˬ¡‚¥¬°“√°‘π ´÷Ëß à«π„À≠à¡’ “‡Àµÿ¡“®“°°“√°‘πÕ“À“√À√◊Õ‡§√◊ËÕߥ◊Ë¡∑’Ë¡’·§¥‡¡’ˬ¡ªπ‡ªóôÕπ ‡π◊ËÕß®“°Õ“À“√À√◊Õ‡§√◊ËÕߥ◊Ë¡¥—ß°≈à“«∫√√®ÿ„π¿“™π–∑’ˇ§≈◊Õ∫¥â«¬·§¥‡¡’ˬ¡ Õ“°“√∑’˪√“°Ø‡√‘Ë¡·√°§◊Õ √Ÿâ ÷°§≈◊Ëπ‡À’¬πÕ¬à“ß√ÿπ·√ß µ“¡¥â«¬°“√Õ“‡®’¬π∑âÕß√à«ß ‡ªìπµ–§√‘« ·≈–πÈ”≈“¬øŸ¡ª“° „π√“¬∑’ˇªìπ¡“°®–¡’Õ“°“√Õ¬à“ßÕ◊Ëπµ“¡¡“„π 2≈—°…≥– §◊Õ Õ“®®–‡°‘¥Õ“°“√™ÁÕ§‡π◊ËÕß®“°√à“ß°“¬ Ÿ≠‡ ’¬πÈ”¡“° ·≈–Õ“®∑”„Àⵓ¬‰¥â¿“¬„π 24 ™—Ë«‚¡ß À√◊ÕÕ’°≈—°…≥–Àπ÷Ëߧ◊Õ √–∫∫°“√∑”ß“π¢Õ߉µ≈⡇À≈«·≈–Õ“®∂÷ßµ“¬‰¥â¿“¬„π 7 À√◊Õ 14 «—π πÕ°®“°π’ÈÕ“®®–¡’º≈‰ª∑”≈“¬µ—∫¥â«¬

µ“√“ß∑’Ë 10 §«“¡‡ªìπæ‘…·∫∫‡©’¬∫æ≈—π¢Õß·§¥‡¡’ˬ¡∑’Ë¡’µàÕ¡πÿ…¬å‚¥¬°“√°‘π

ª√‘¡“≥·§¥‡¡’ˬ¡ (mg) Õ“°“√∑’ˇ°‘¥¢÷Èπ

3-90 ‡°‘¥Õ“°“√Õ“‡®’¬π ·µà‰¡à¡’º≈∑”„Àâ∂÷ßµ“¬

15 ‡°‘¥°“√Õ“‡®’¬π

10-326 ‡°‘¥Õ“°“√§«“¡‡ªìπæ‘…Õ¬à“ß√ÿπ·√ß·µà‰¡à∂÷ßµ“¬

350-3,500 ª√‘¡“≥∑’ËÕ“®®–∑”„Àâ∂÷ßµ“¬‰¥â

1,530-8,900 ª√‘¡“≥∑’Ë∑”„Àⵓ¬‰¥â

À¡“¬‡Àµÿ ‚¥¬ √ÿªÕ¬à“ߧ√à“«Ê ª√‘¡“≥∑’ˉ¡à¡’º≈µàÕ√à“ß°“¬·∫∫‡©’¬∫æ≈—π‡¡◊ËÕ°‘π‡¢â“‰ª§√—È߇¥’¬« §◊Õ 3 mg

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48 “√Õ—πµ√“¬

11.1.2 §«“¡‡ªìπæ‘…µàÕ√–∫∫À“¬„® (effect on the respiratorysystem)

§«“¡‡ªìπæ‘…∑’ˇ°‘¥¢÷Èπ„π√–∫∫À“¬„® ‡π◊ËÕß®“°°“√ Ÿ¥À“¬„®øŸ¡¢Õß·§¥‡¡’ˬ¡ ´÷Ëß à«π„À≠à‡°‘¥¢÷Èπ‡π◊ËÕß®“°°‘®°“√Õÿµ “À°√√¡ ‚¥¬‡©æ“–°“√‡™◊ËÕ¡‚≈À–¥â«¬§«“¡√âÕπ Ÿß ·µà‚¥¬∑—Ë«‰ª„π¢≥–∑’Ë Ÿ¥À“¬„®®–‰¡àª√“°ØÕ“°“√À√◊Õ¡’Õ“°“√‡æ’¬ß‡≈Á°πâÕ¬ ·≈–øŸ¡∑’ˇ°‘¥®“°°“√„™â°√–· ‰øøÑ“®–¡’§«“¡‡ªìπæ‘…‡ªìπ Õ߇∑à“¢ÕßøŸ¡∑’ˇ°‘¥®“°§«“¡√âÕπ

Õ“°“√‚¥¬√«¡®–ª√“°ØÀ≈—ß®“° Ÿ¥À“¬„®øŸ¡‡¢â“‰ª·≈â« 2-3 ™—Ë«‚¡ß§◊Õ‡°‘¥Õ“°“√√–§“¬‡§◊Õß∑’ËÀ≈Õ¥≈¡·≈–ªÕ¥ ´÷Ëß√«¡∂÷ßÕ“°“√Õ◊ËπÊ ¥â«¬ ‡™àπ √–§“¬‡§◊Õß∑’Ë®¡Ÿ°·≈–§Õ ‰Õ ª«¥»’√…– ‡«’¬π»’√…– ÕàÕπ‡æ≈’¬ Àπ“« —Ëπ ¡’‰¢â ‡®Á∫Àπâ“Õ°πÕ°®“°π’ÈÕ“®¡’Õ“°“√Õ¬à“ßÕ◊Ëπª√“°Ø¥â«¬ ‡™àπ §≈◊Ëπ‡À’¬π Õ“‡®’¬π ·≈–∑âÕß√à«ß

µ“√“ß∑’Ë 11 §«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’Ë∑”„À⇰‘¥æ‘…‡©’¬∫æ≈—πµàÕ —µ«å∑¥≈Õß‚¥¬°“√À“¬„®1/

“√ª√–°Õ∫·§¥‡¡’ˬ¡ ™π‘¥¢Õß —µ«å∑¥≈Õß LC50 (mg/m3)

Cadmium oxide rat 500-1,300 (1 minute)

mouse 700 (10 minutes)

mouse 250 (120 minutes)

dog 4,000 (10 minutes)

rabbit 2,500 (10 minutes)

guinea-pig 3,500 (10 minutes)

monkeys 1,500 (10 minutes)

Cadmium stearate rat 130 (2 hours)

Cadmium chloride dog LC90 = 8 (30 minutes)

1/ Ref: CEC (1978), Criteria (Dose/Effect Relationships) for Cadmium, p.71

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·§¥‡¡’ˬ¡ (Cadmium) 49

µ“√“ß∑’Ë 12 ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’Ë∑”„Àâ¡πÿ…¬å∂÷ß·°à™’«‘µ (lethalconcentration)1/

ª√‘¡“≥§«“¡‡¢â¡¢âπ √–¬–‡«≈“ ºŸâ»÷°…“«‘®—¬(mg/m3) Ÿ¥À“¬„® (‚¥¬°“√§“¥ª√–¡“≥)

5 8 hours Friberg et al. (1974)

140-290 10 min American Industrial HygieneAssociation (1944)

2,600 1 min Beton et al. (1966)

2,500-2,900 1 min Barrett et al. (1947)

1/ Ref. : CEC (1978), Criteria (Dose/Effect Relationships) for Cadmium,p. 71-72

11.1.3 §«“¡‡ªìπæ‘…µàÕ√–∫∫Õ◊ËπÊ (effect on other systems)

®“°°“√∑¥≈Õß„π —µ«å æ∫«à“ ·§¥‡¡’ˬ¡¡’§«“¡‡ªìπæ‘…µàÕ√–∫∫Õ◊Ëπʇ™à𠉵 µ—∫ Õ—≥±– µ—∫ÕàÕπ √–∫∫ª√– “∑ √–∫∫∑’ˇ°’ˬ«°—∫°“√ √â“߇¡Á¥‚≈À‘µ ·≈–√–∫∫‡ âπ‡≈◊Õ¥ À—«„® ”À√—∫§«“¡‡ªìπæ‘…µàÕ√–∫∫Õ◊ËπÊ „π§π¬—߉¡à‡¥àπ™—¥‡π◊ËÕß®“°»÷°…“µ√«® Õ∫‰¥âÕ¬“°

11.2 §«“¡‡ªìπæ‘…·∫∫‡√◊ÈÕ√—ß (long term effects)

§«“¡‡ªìπæ‘…·∫∫‡√◊ÈÕ√—ß∑’Ë¡’µàÕ¡πÿ…¬åÀ≈—ß®“°∑’Ë√à“ß°“¬‰¥â√—∫·§¥‡¡’ˬ¡„πª√‘¡“≥ª“π°≈“߇¢â“‰ªπ“𵑥µàÕ°—𠧫“¡‡ªìπæ‘…¡—°®–‰ªª√“°Ø∑’˪ե·≈–‰µ ‡ªìπ à«π„À≠à à«π„π√–∫∫Õ◊ËπÊ °Á¡’ª√“°ØÕ“°“√‡™àπ‡¥’¬«°—𠇙àπ ∑’Ë°√–¥Ÿ° ‡¡Á¥‚≈À‘µ à«π„π —µ«å∑¥≈Õß®–æ∫Õ“°“√¢Õߧ«“¡¥—π‚≈À‘µ Ÿß

11.2.1 §«“¡‡ªìπæ‘…µàÕªÕ¥ (effect on the lung)

„π§πß“π∑’˵âÕßÀ“¬„®‡Õ“ΩÿÉπÀ√◊ÕøŸ¡¢Õß·§¥‡¡’ˬ¡ (Cadmium dustor fume) ®–∑”„À⇰‘¥°“√∫«¡À√◊ÕæÕߢÕ߇π◊ÈÕ‡¬◊ËÕªÕ¥ ·≈–‡°‘¥Õ“°“√À“¬„®¢—¥

”À√—∫ª√‘¡“≥§«“¡‡¢â¡¢âπµË” ÿ¥¢Õß·§¥‡¡’ˬ¡∑’Ë®–°àÕ„Àâ ‡°‘¥§«“¡‡ªìπæ‘…„π√–¬–¬“«¬—߉¡à‡ªìπ∑’Ë∑√“∫·πà™—¥ ·µà¡’∫“ß√“¬ß“π‡ πÕ‰«â«à“ °“√‰¥â√—∫

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50 “√Õ—πµ√“¬

·§¥‡¡’ˬ¡„πª√‘¡“≥§«“¡‡¢â¡¢âπ 2 µg/m3 π“𵑥µàÕ°—π («—π≈– 24 ™—Ë«‚¡ß ‡ªìπ‡«≈“70 ªï) ‡ªìπ√–¥—∫∑’ˉ¡à¡’º≈µàÕªÕ¥

·¡â«à“ª√‘¡“≥·§¥‡¡’ˬ¡∑’Ë√à“ß°“¬‰¥â√—∫∑—Èß®“°°“√°‘π·≈–°“√À“¬„®®–¡’ª√‘¡“≥µË”®π‰¡à¡’º≈µàÕªÕ¥ ·§¥‡¡’ˬ¡ª√‘¡“≥¥—ß°≈à“«Õ“®®– – ¡Õ¬Ÿà„π√à“ß°“¬®π‰ª¡’º≈µàÕ‰µ‰¥â

11.2.2 §«“¡‡ªìπæ‘…µàÕ‰µ (effect on the kidney)

„πºŸâ∑’ˉ¥â√—∫·§¥‡¡’ˬ¡‡¢â“ Ÿà√à“ß°“¬π“𵑥µàÕ°—𠇙àπ §πß“π À√◊Õ™“«≠’˪ÿÉπ ‚¥¬‡©æ“–„π°≈ÿࡺŸâÀ≠‘ß ŸßÕ“¬ÿ´÷Ëß∫√‘‚¿§¢â“«∑’˪≈Ÿ°„πæ◊Èπ∑’˪π‡ªóôÕπ¥â«¬·§¥‡¡’ˬ¡®π°àÕ„À⇰‘¥‚√§æ‘…·§¥‡¡’ˬ¡∑’ˇ√’¬°«à“ ‚√§Õ‘‰µ-Õ‘‰µ ®–æ∫§«“¡‡ªìπæ‘…∑’ˉµ°àÕπ∑’˪ե °≈à“«§◊Õ®–‡°‘¥·º≈∑’ˉµ √«¡∂÷ß°“√∑’ˉµ¢—∫ªí “«–∑’Ë¡’‚ª√µ’π¡“°°«à“ª°µ‘ ´÷Ëß‚ª√µ’π∑’Ë¢—∫ÕÕ°¡“ à«π„À≠à®–‡ªìπ‚ª√µ’π∑’Ë¡’πÈ”Àπ—°‚¡‡≈°ÿ≈µË”Ê ‡™àπ B2

microglobulin, lysozyme, ribonuclease, retinol binding protein andimmunoglobin chains

”À√—∫ª√‘¡“≥∑’˧“¥§–‡π«à“‡¡◊ËÕ√à“ß°“¬‰¥â√—∫‡¢â“‰ª‚¥¬°“√°‘π·≈â«®–‰¡à¡’º≈µàÕ‰µ §◊Õ«—π≈– 200 mg à«πª√‘¡“≥·§¥‡¡’ˬ¡∑’Ë – ¡Õ¬Ÿà„π‰µ∑’˧“¥«à“Õ“®®–°àÕ„À⇰‘¥§«“¡‡ªìπæ‘…¢÷Èπ‰¥â §◊Õ 200 µg/g ¢Õ߇π◊ÈÕ‰µ (πÈ”Àπ—°‡ªï¬°)

11.2.3 §«“¡‡ªìπæ‘…µàÕ√–∫∫‡≈◊Õ¥‡¢â“ ŸàÀ—«„® (effect on the cardio-vascular system)

§«“¡‡ªìπæ‘…∑’Ë¡’µàÕ√–∫∫‡≈◊Õ¥‡¢â“ ŸàÀ—«„® §◊Õ ‡°‘¥§«“¡¥—π‚≈À‘µ Ÿß´÷Ëߺ≈°“√»÷°…“‡°’ˬ«°—∫·§¥‡¡’ˬ¡µàÕ°“√‡°‘¥§«“¡¥—π‚≈À‘µ Ÿß ¬—ß¡’¢âÕ‚µâ·¬âß °≈à“«§◊Õ¡’∫“ß√“¬ß“π»÷°…“ æ∫«à“„π°“√∑¥≈Õß°—∫ÀπŸ‚¥¬„ÀâÀπŸ‰¥â√—∫·§¥‡¡’ˬ¡„πª√‘¡“≥µË”¡“°Ê („πÕ“À“√ 0.02 ppm ·≈–„ππÈ” 0.2 ppm) ª√“°Ø«à“ÀπŸ®–¡’Õ“°“√¢Õߧ«“¡¥—π‚≈À‘µ Ÿß‡°‘¥¢÷Èπ ·≈–¡’∫“ß√“¬°≈—∫‰¡àæ∫Õ“°“√¥—ß°≈à“«

11.2.4 §«“¡‡ªìπæ‘…∑’Ë°√–¥Ÿ° (effect on the bones)

§«“¡‡ªìπæ‘…∑’Ë°√–¥Ÿ°ª√“°Ø‡¥àπ™—¥„π°√≥’°“√‡°‘¥‚√§Õ‘‰µ-Õ‘‰µ „πª√–‡∑»≠’˪ÿÉπ ®“°°“√∫√‘‚¿§¢â“«∑’Ë¡’·§¥‡¡’ˬ¡ªπ‡ªóôÕπ„πª√‘¡“≥ Ÿß ºŸâªÉ«¬‚√§π’È à«π„À≠à‡ªìπºŸâÀ≠‘ß ŸßÕ“¬ÿª√–¡“≥ 50 ªï¢÷Èπ‰ª ‚√§π’ȇªìπ‚√§°√–¥Ÿ°ºÿ §◊Õ °√–¥Ÿ°®–æ√ÿπßÕ‚§â߉¥â ∑”„Àâ°√–¥Ÿ°‡ ’¬√Ÿª∑√ß·≈–À—°‰¥â ·≈–¡’Õ“°“√ª«¥∑’ˇի ª«¥°≈â“¡‡π◊ÈÕ¢“·≈–‡®Á∫∑’Ë°√–¥Ÿ° µ≈Õ¥®π¡’º≈µàÕ°“√‡§≈◊ËÕπ‰À«¥â«¬ ¡’ºŸâ»÷°…“∫“ß√“¬‡™◊ËÕ«à“Õ“°“√∑’ˇ°‘¥¢÷Èπ∑’Ë°√–¥Ÿ°‰¡à‰¥â¡’º≈‚¥¬µ√ß®“°æ‘…¢Õß·§¥‡¡’ˬ¡ ·µàÕ“®‡π◊ËÕß¡“®“°§«“¡‡ªìπæ‘…

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·§¥‡¡’ˬ¡ (Cadmium) 51

‡°‘¥¢÷Èπ∑’ˉµ°àÕπ·≈â« àߺ≈‰ª¢—¥¢«“ߪؑ°‘√‘¬“°“√∑”ß“π¢Õß·§≈‡´’ˬ¡·≈–øÕ øÕ√— ·≈–¡’ºŸâ»÷°…“∫“ß√“¬¡’§«“¡‡ÀÁπ«à“·§¥‡¡’ˬ¡¡’§«“¡‡ªìπæ‘…‚¥¬µ√߇π◊ÈÕ‡¬◊ËÕ°√–¥Ÿ° ´÷Ëßæ∫‰¥â°àÕ𧫓¡‡ªìπæ‘…∑’ˇ°‘¥∑’ˉµ

11.2.5 §«“¡‡ªìπæ‘…µàÕ√–∫∫°“√ √â“߇¡Á¥‚≈À‘µ (effect on thehematopoietic system)

„π°≈ÿࡺŸâªÉ«¬∑’ˇªìπ‚√§Õ‘‰µ-Õ‘‰µ ·≈–°≈ÿࡧπß“π∑’˵âÕß —¡º— °—∫·§¥‡¡’ˬ¡®–æ∫Õ“°“√¢Õß‚√§‚≈À‘µ®“ß ·≈–®“°°“√∑¥≈Õß„π —µ«å°Áæ∫Õ“°“√¢Õß‚√§‚≈À‘µ®“߇™àπ‡¥’¬«°—π ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’Ë®–‰¡à¡’º≈µàÕ°“√ √â“߇¡Á¥-‚≈À‘µ„π —µ«å §◊Õª√–¡“≥ 5-10 ppm „ππÈ”¥◊Ë¡ ∑—Èßπ’È®“°°“√∑¥≈Õß„πÀπŸ (mice) æ∫«à“°“√‰¥â√—∫·§¥‡¡’ˬ¡ª√‘¡“≥‡¢â¡¢âπ 10 ppm „π™à«ß‡«≈“ —ÈπÊ ®–‰ª¡’º≈µàÕ°“√¥Ÿ¥´÷¡‡À≈Á°¢Õß√–∫∫∑“߇¥‘πÕ“À“√

11.2.6 §«“¡‡ªìπæ‘…µàÕµ—∫ (effect on the liver)

§«“¡‡ªìπæ‘…µàÕµ—∫„π¡πÿ…¬å ¡’√“¬ß“π§àÕπ¢â“ßπâÕ¬¡“° ·µà®“°°“√∑¥≈Õß„π —µ«åæ∫«à“·§¥‡¡’ˬ¡„πª√‘¡“≥πâÕ¬ („ππÈ”¥◊Ë¡ 1 ppm) ¡’º≈∑”„Àâ°“√∑”ß“π¢Õ߇ÕÁπ‰´¡å„πµ—∫‡ª≈’ˬπ‰ª

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52 “√Õ—πµ√“¬

12°“√»÷°…“§«“¡‡ªìπæ‘…‡©æ“–¥â“π(Special toxicity studies)

12.1 §«“¡‡ªìπæ‘…∑’Ë¡’º≈®“°ªØ‘°‘√‘¬“™’«‡§¡’„π√à“ß°“¬ (biochemical

interactions)

·§¥‡¡’ˬ¡·≈– “√ª√–°Õ∫·§¥‡¡’ˬ¡®–°àÕ„À⇰‘¥§«“¡‡ªìπæ‘…µàÕÕ«—¬«–·≈–√–∫∫¢Õß√à“ß°“¬‰¥âÀ≈“¬·Ààß ®“°°“√∑¥≈Õß„πÀ≈Õ¥∑¥≈Õß æ∫«à“ Cd2+ ®–∑”ªØ‘°‘√‘¬“°—∫ substrates ∑’Ë¡’ thiol ª√–°Õ∫Õ¬Ÿà ‡™àπ cysteins, unithiol ·≈–hemoglobin „πÕ—µ√“ à«π Cd2+ µàÕ SH-group ‡∑à“°—∫ 1 : 2 ´÷Ëß cadmiummercaptides ®“°ªØ‘°‘√‘¬“®–¡’§«“¡‡ ∂’¬√πâÕ¬°«à“ mercury mercaptides

®“°°“√∑¥≈Õß„πÀπŸ (rats) —¡º— °—∫ cadmium sulfate ª√‘¡“≥§«“¡‡¢â¡¢âπ 3 ·≈– 0.3 mg/m3 ‡ªìπ‡«≈“ 4 ™—Ë«‚¡ßµàÕ«—π æ∫«à“ª√‘¡“≥¢Õß SH-groups„π‡´√ÿà¡≈¥≈ß ·§¥‡¡’ˬ¡ “¡“√∂‰ª¬—∫¬—Èß°“√∑”ß“π¢Õß enzymes À≈“¬Ê ™π‘¥ ‚¥¬‰ª∑”ªØ‘°‘√‘¬“°—∫°≈ÿà¡∑’ˇªìπ·°π°≈“ß„π°“√∑”ß“π¢Õß enzymes ‚¥¬‡©æ“– sulfhydrylgroups

®“°°“√∑¥≈Õß‚¥¬°“√ °—¥‡Õ“ water-salt ÕÕ°®“° ¡Õß µ—∫ ·≈–‰µ¢ÕßÀπŸ¢“« ·≈â«„ à “√≈–≈“¬ cadmium chloride ≈߉ª „Àâ¡’§«“¡‡¢â¡¢âπ 0.001 mole·≈–𔉪 incubate π“π 30 π“∑’ æ∫«à“ °“√∑”ß“π¢Õß thiol enzymes ∑’ˇ°’ˬ«°—∫°“√„Àâæ≈—ßß“π ‚¥¬‡ª≈’ˬπ‡ªìπ succinatdehydrogenase ≈¥≈ß 88-100% ‡ª≈’ˬπ‡ªìπ lactatdehydrogenase ≈¥≈ß 20-31% ·≈–‡ª≈’ˬπ‡ªìπ ATP-ase ≈¥≈ß21-51% πÕ°®“°π’È®“°°“√∑¥≈Õß„ÀâÀπŸ°‘π cadmium chloride ‡¢â“‰ª„πª√‘¡“≥ 2mg/kg ª√“°Ø«à“°“√∑”ß“π¢Õß monoaminooxidase „π‡π◊ÈÕ‡¬◊ËÕ¢Õßµ—∫·≈– ¡Õß≈¥≈ß 28 ·≈– 12% µ“¡≈”¥—∫

®“°°“√∑¥≈Õß„ÀâÀπŸ¥◊Ë¡πÈ”∑’Ë¡’ cadmium chloride ª√‘¡“≥ 5 mg/ml ‡ªìπ‡«≈“ 1 ªï ª√“°Ø«à“°“√∑”ß“π¢Õß cytochromeoxidase „π‡π◊ÈÕ‡¬◊ËÕ¢Õßµ—∫ ‰µ ·≈–°≈â“¡‡π◊ÈÕ∫√‘‡«≥‚§√ß°√–¥Ÿ°≈¥≈ß 28.6%, 39.4% ·≈– 18.9% µ“¡≈”¥—∫ ·≈–°“√∑”ß“π¢Õß succinatdehydrogenase °Á≈¥≈߇™àπ‡¥’¬«°—π§◊Õ 32.8%, 41.7% ·≈–21.3% µ“¡≈”¥—∫ πÕ°®“°π’Ȫ√‘¡“≥ ascorbic acid ∑’Ëæ∫°Á≈¥≈ß 32.4%, 53.9% ·≈–23.7% Õ’°∑—Èß glutathione °Á≈¥≈ß 41.6%, 58.7% ·≈– 24.9% µ“¡≈”¥—∫ à«π„π‡π◊ÈÕ‡¬◊ËÕ¢Õ߉µ°≈—∫æ∫«à“°“√∑”ß“π¢Õß cytochromeoxidase ‡æ‘Ë¡¢÷Èπ 43.3% ·≈–°“√

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·§¥‡¡’ˬ¡ (Cadmium) 53

∑”ß“π¢Õß succinatdehydrogenase ‡æ‘Ë¡¢÷Èπ 37.8% ª√‘¡“≥ ascorbic acid ‡æ‘Ë¡¢÷Èπ67.2% ·≈– glutathione ≈¥≈ß 73.8%

®“°°“√∑¥≈Õß©’¥ cadmium chloride ∑’ˇ¢â¡¢âπ 0.056 mmole/kg‡¢â“‰ª„π™àÕß∑âÕߢÕßÀπŸ æ∫«à“ °“√∑”ß“π succinic acid dehydrogenase „π‡π◊ÈÕ‡¬◊ËÕ‰µ≈¥≈ß 7.7% SH-group „π‡´√ÿà¡≈¥≈ß 15.9% ·≈– SH-group „π‰µ≈¥≈ß9.8% ·≈–®“°°“√∑¥≈Õß‚¥¬°“√©’¥ cadmium chloride ‡¢â“‰ª¿“¬„π°√–‡æ“–Õ“À“√¢ÕßÀπŸ∑ÿ°«—π ‚¥¬©’¥ —ª¥“Àå≈– 6 «—π ®–¡’º≈∑”„Àâ°“√∑”ß“π¢Õß lactatdehydro-genase „π‡π◊ÈÕ‡¬◊ËÕ ¡Õß≈¥≈ß 16.6% ·≈– succinatdehydrogenase ≈¥≈ß19.7% à«π°“√≈¥≈ߢÕߪ√‘¡“≥ SH-group „π‡´√ÿà¡·≈–„π‡π◊ÈÕ‡¬◊ËÕ®–¡’ à«π —¡æ—π∏å°—∫°“√¬—∫¬—Èß°“√∑”ß“π¢Õ߇ÕÁπ‰´¡å„πªØ‘°‘√‘¬“°“√„Àâæ≈—ßß“π

πÕ°®“°π’È “√ª√–°Õ∫·§¥‡¡’ˬ¡®–¡’º≈‰ª√–ß—∫°“√∑”ß“π¢Õß trypsin·≈–¡’º≈∑”„Àâ pepsin ≈¥πâÕ¬≈ߥ⫬

cadmium chloride ®–¡’º≈µàÕ√à“ß°“¬∑’ˇ√’¬°«à“ peroxydase effect (¡’º≈µàÕ‡ÕÁπ‰´¡å∑’Ë°√–µÿâπ°“√π”ÕÕ°´‘‡®π®“° peroxide ‰ª¬—߇π◊ÈÕ‡¬◊ËÕ∑’˵âÕß°“√ÕÕ°´‘‡®π) à«π cadmium sulfate ®–¡’º≈µàÕ°“√∑”ß“π¢Õß catalase (‡ÕÁπ‰´¡å∑’Ë°√–µÿâπ°“√‡ª≈’Ë¬π‰Œ‚¥√‡®π‡ªÕ√åÕÕ°‰´¥å‡ªìππÈ”·≈–ÕÕ°´‘‡®π) „π ¿“«–∑’Ë¡’·§¥‡¡’ˬ¡„πª√‘¡“≥µË”Ê °“√∑”ß“π¢Õß catalase „π‡≈◊Õ¥·≈–µ—∫®–‡æ‘Ë¡¢÷Èπ·≈–≈¥≈߇¡◊ËÕª√‘¡“≥·§¥‡¡’ˬ¡‡æ‘Ë¡¢÷Èπ

·§¥‡¡’ˬ¡¡’º≈µàÕ°“√ metabolism ¢Õߧ“√å‚∫‰Œ‡¥√µ ®“°°“√©’¥cadmium chloride ª√‘¡“≥ 2 ¡‘≈≈‘°√—¡ ‡¢â“‰ª„π‡ âπ‡≈◊Õ¥¢ÕßÀπŸ ®–æ∫ hyper-glycemia (Õ“°“√∑’Ë¡’πÈ”µ“≈„π‡≈◊Õ¥‡°‘πª°µ‘) ¿“¬„π 1-2 ™—Ë«‚¡ß À≈—ß®“°©’¥‡¢â“‰ªπÕ°®“°π’È°“√©’¥ cadmium chloride ‡¢â“‰ª„µâº‘«Àπ—ߢÕß°√–µà“¬∑ÿ°«—π„πª√‘¡“≥2 ¡‘≈≈‘°√—¡/°‘‚≈°√—¡ À≈—ß®“°π—Èπ 37-60 «—π ª√“°Ø«à“√–¥—∫πÈ”µ“≈„π‡≈◊Õ¥‡æ‘Ë¡¢÷Èπ 2-4‡∑à“ ‡¡◊ËÕ‡∑’¬∫°—∫°√–µà“¬∑’ˉ¡à‰¥â©’¥

12.2 °“√‡ªìπ “√∑’Ë°àÕ‡°‘¥¡–‡√Áß (carcinogenicity)

®“°°“√∑¥≈Õß‚¥¬©’¥ cadmium chloride ‡¢â“‰ª„µâº‘«Àπ—ߢÕßÀπŸ(mouse) „πª√‘¡“≥ 5.5 mg/kg ‚¥¬©’¥‡¢â“‰ª§√—È߇¥’¬« ª√“°Ø«à“¿“¬„π 14 ‡¥◊Õπ®–æ∫‡π◊ÈÕßÕ°‡°‘¥¢÷Èπ√–À«à“߇´≈≈å

®“°°“√∑¥≈Õß‚¥¬©’¥ cadmium chloride ‡¢â“‰ª„µâº‘«Àπ—ߢÕßÀπŸ (rat)„πª√‘¡“≥ 3.7 mg/kg ‚¥¬©’¥‡¢â“‰ª§√—È߇¥’¬« ª√“°Ø«à“¿“¬„π 11 ‡¥◊Õπ ®–æ∫

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54 “√Õ—πµ√“¬

‡π◊ÈÕßÕ°‡°‘¥¢÷Èπ√–À«à“߇´≈≈å ·≈–‡°‘¥‡π◊ÈÕßÕ°·∫∫ fibrosarcomas (‡π◊ÈÕßÕ°∑’Ë¡’‡π◊ÈÕ‡ªìπ≈—°…≥–‡ âπ„¬) ‡ªìπ∫√‘‡«≥Ê ‰ª

®“°°“√∑¥≈Õß ‚¥¬©’¥ cadmium chloride ‡¢â“‰ª„µâº‘«Àπ—ߢÕßÀπŸ(rat) „πª√‘¡“≥ 0.85 mg/kg (À√◊Õª√‘¡“≥ 0.17 mg) ‚¥¬©’¥‡¢â“‰ª 4 §√—Èß ª√“°Ø«à“¿“¬„π 12-16 ‡¥◊Õπ ®–‡°‘¥‡π◊ÈÕßÕ°¢÷Èπ∫√‘‡«≥„µâº‘«Àπ—ß∑’Ë©’¥‡¢â“‰ª

12.3 °“√‡ªìπ “√∑’Ë°àÕ‡°‘¥°“√°≈“¬æ—π∏ÿå (mutagenicity)

®“°°“√∑¥≈Õß‚¥¬©’¥ cadmium chloride ‡¢â“‰ª¿“¬„π™àÕß∑âÕߢÕßÀπŸµ—«ºŸâ (male mouse) „πª√‘¡“≥ 7 mg/kg ª√“°Ø«à“‰¡à¡’º≈Õ–‰√‡°‘¥¢÷Èπ

®“°°“√‡æ“–‡≈’Ȭ߇´≈≈å√—߉¢à¢ÕßÀπŸ (hamster) „π cadmium chloride‡¢â¡¢âπ 0.224 ppm ª√“°Ø«à“‚§√‚¡‚´¡·µ°‡ªìπ™‘ÈπÊ ·≈– chromatid ∑’ˇæ‘Ë¡®”π«π¢÷Èπ®–¡’¢π“¥‡≈Á°≈ß

12.4 §«“¡‡ªìπæ‘…µàÕ√–∫∫ª√– “∑ (neurotoxicity)

®“°°“√µ√«®«‘π‘®©—¬§πß“π∑’˵âÕß∑”ß“π —¡º— °—∫ “√ª√–°Õ∫·§¥‡¡’ˬ¡ª√“°Ø«à“ ®–¡’Õ“°“√ª«¥»’√…–∫àÕ¬ ‡«’¬π»’√…– ©ÿπ‡©’¬«ßà“¬ ·≈–πÕπ‰¡àÀ≈—∫°√– —∫°√– à“¬ „π∫“ß√“¬‡°‘¥Õ“°“√ neurasthenia (‚√§ª√– “∑∑’Ë¡’Õ“°“√ÕàÕπ‡æ≈’¬Õ¬à“߇√◊ÈÕ√—ß ∫“ß∑’‡Àπ◊ËÕ¬ ÕàÕπ·√ß ÕàÕπ„® Õ“°“√®‘µ´÷¡ ‡∫◊ËÕÕ“À“√ πÕπ‰¡àÀ≈—∫) ·≈–Õ“°“√ vegetative neurosis (Õ“°“√ª√– “∑∑’ˇ°’ˬ«°—∫§«“¡º‘¥ª°µ‘∑“ßÕ“√¡≥å‡π◊ËÕß®“°‡∫◊ËÕÕ“À“√)

12.5 §«“¡º‘¥ª°µ‘µàÕ°“√ ◊∫æ—π∏ÿå (reproduction)

°“√»÷°…“‡°’ˬ«°—∫§«“¡º‘¥ª°µ‘µàÕ°“√ ◊∫æ—π∏ÿåÕ—π‡π◊ËÕß¡“®“°·§¥‡¡’ˬ¡· ¥ß„πµ“√“ß∑’Ë 13

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µ“√“ß∑’Ë 13 °“√»÷°…“§«“¡º‘¥ª°µ‘µàÕ°“√ ◊∫æ—π∏ÿå„π —µ«å∑¥≈Õß®“°°“√©’¥ cadmium chloride ‡¢â“„µâº‘«Àπ—ß1/

—µ«å∑¥≈Õߪ√‘¡“≥∑’Ë©’¥

√–¬–‡«≈“∑’Ë —¡º— º≈∑’ˇ°‘¥¢÷Èπ(mg/kg body weight)

ÀπŸ (rat) 4 7 «—π ©’¥∑ÿ°«—π ∑”„Àâµ—«ÕàÕπ„π∑âÕßµ“¬

(µ—Èß·µà«—π∑’Ë 13-19 ¢Õß°“√µ—Èß∑âÕß)

ÀπŸ (µ—«‡¡’¬) 3.7 (0.02 mmole/kg) ©’¥§√—È߇¥’¬« ‡°‘¥°“√µ°‡≈◊Õ¥„π√—߉¢à·≈–‡°‘¥°“√µ“¬¢Õß

‡π◊ÈÕ‡¬◊ËÕ∫√‘‡«≥√—߉¢à

ÀπŸ (µ—«ºŸâ) 1.4 (0.85 mgCd/kg) ©’¥§√—È߇¥’¬« ‡°‘¥°“√µ“¬¢Õ߇π◊ÈÕ‡¬◊ËÕ∫√‘‡«≥≈Ÿ°Õ—≥±–

ÀπŸ (mouse) 0.4 6 ‡¥◊Õπ (5 §√—Èß/ —ª¥“Àå) ‡°‘¥°“√‡ª≈’ˬπ·ª≈ß„π à«π∑’ˇ°’ˬ«°—∫Õ—≥±–

ÀπŸ (mouse) 0.33 «—π∑’Ë 7 ¢Õß°“√µ—Èß∑âÕß ∑”„Àâµ—«ÕàÕπ„π∑âÕßµ“¬

1/ Ref : IRPTC (1978), Data Profiles for Chemicals for the Evaluation of their Hazards to the Environment of theMediterranean Sea.

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56 “√Õ—πµ√“¬

12.6 §«“¡º‘¥ª°µ‘∑’ˇ°‘¥„π∑“√° (teratogenicity)

º≈°“√»÷°…“„π‡√◊ËÕߧ«“¡º‘¥ª°µ‘∑’ˇ°‘¥„π∑“√° · ¥ß„πµ“√“ß∑’Ë 14

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µ“√“ß∑’Ë 14 º≈°“√»÷°…“„π‡√◊ËÕߧ«“¡º‘¥ª°µ‘∑’ˇ°‘¥„π∑“√°‡π◊ËÕß®“° cadmium chloride1/

ª√‘¡“≥∑’Ë∑”„À⇰‘¥ —µ«å∑¥≈Õß °“√‡¢â“ Ÿà√à“ß°“¬ §«“¡º‘¥ª°µ‘ √–¬–‡«≈“ —¡º— º≈∑’ˇ°‘¥¢÷Èπ

(mg/kg body weight)

ÀπŸ (rat) °“√°‘π 20 µ—Èß·µà«—π∑’Ë 6-19 ¢Õß ∑”„À⇰‘¥§«“¡º‘¥ª°µ‘¢Õßµ—«ÕàÕπ°“√µ—Èß∑âÕß (∑ÿ°«—π) „π∑âÕß

ÀπŸ (rat) ©’¥‡¢â“„µâº‘«Àπ—ß 4 4 §√—Èß ‡√‘Ë¡µ—Èß·µà«—π∑’Ë ∑“√°®–¡’¢“°√√‰°√‡≈Á°°«à“ª°µ‘13-16 ¢Õß°“√µ—Èß∑âÕß ¡’√àÕß∑“ß·π«°≈“ߢÕß‡æ¥“πª“°(∑ÿ°«—π) ‡°‘¥¢÷Èπ ‡∑â“∫‘¥ ·≈–ªÕ¥‡≈Á°

ÀπŸ (rat) ©’¥‡¢â“‰ª„π™àÕß∑âÕß 2.9 §√—È߇¥’¬«„π™à«ß«—π∑’Ë ∑”„À⇰‘¥§«“¡º‘¥ª°µ‘‡°’ˬ«°—∫µ“9-11 ¢Õß°“√µ—Èß∑âÕß ¢Õß∑“√° ¡Õß ®–¢¬“¬„À≠à¢÷Èπ

·µà¡’πÈ”¢—ßÕ¬Ÿà·≈–√Ÿª√à“ß®–º‘¥ à«π

ÀπŸ (mouse) ©’¥‡¢â“„µâº‘«Àπ—ß 0.33 «—π∑’Ë 7 ¢Õß∑“√° ∑“√°®–¡’ ¡ÕßÕ¬ŸàπÕ°°√–‚À≈°»’√…–µ—Èß∑âÕß (exencephaly) µ“®–‡ªî¥ ·≈–

√Ÿª√à“ß®–º‘¥ à«π

1/ Ref : IRPTC (1978), Data Profiles for Chemicals for the Evaluation of their Hazards to the Environment of theMediterranean Sea.

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58 “√Õ—πµ√“¬

12.7 °“√‡ √‘¡æ‘…/°“√µàÕµâ“πæ‘… (potentiation/antagonism)

®“°°“√∑¥≈Õß‚¥¬„ÀâÀπŸ —¡º— °—∫ cadmium chloride ´÷Ëߺ ¡°—∫ “√Õ◊ËπÊ ‡æ◊ËÕ¥Ÿº≈°“√‡ª≈’ˬπ·ª≈ß∑’ˇ°‘¥¢÷Èπ · ¥ß„πµ“√“ß∑’Ë 15

µ“√“ß∑’Ë 15 °“√‡ √‘¡æ‘…/°“√µàÕµâ“πæ‘…„π —µ«å∑¥≈Õß1/

—µ«å∑¥≈Õß “√∑’˺ ¡‡¢â“‰ª º≈°“√∑¥≈Õß

ÀπŸ (rat) Zn+2 ™à«¬ªÑÕß°—π°“√‡°‘¥·º≈∑’Ë≈Ÿ°Õ—≥±–Se+4

ÀπŸ (rat) ZnCl2 °“√µ“¬≈¥≈߇¡◊ËÕ‡∑’¬∫°—∫°“√©’¥Zn(CH3COO)2 ‡©æ“– Cadmium chloride

ÀπŸ (rat) estrogen ∑”„À⇴≈≈å¢Õß∫√‘‡«≥≈Ÿ°Õ—≥±–∂Ÿ°∑”≈“¬≈¥≈ß

ÀπŸ (mouse) Cystein, thiols ≈¥Õ—µ√“°“√∑”≈“¬‡´≈≈å∫√‘‡«≥≈Ÿ°Õ—≥±–

ÀπŸ (mouse) Sodium, selenite ‰ªªî¥°—Èπ°“√¥Ÿ¥À√◊Õ°“√√—∫‡Õ“·§¥‡¡’ˬ¡‡¢â“‰ª„π‡π◊ÈÕ‡¬◊ËÕ

ÀπŸ (hamster) Sodium, selenite ™à«¬¬—∫¬—Èß°“√‡°‘¥§«“¡º‘¥ª°µ‘„π∑“√°

1/ Ref : IRPTC (1978), Data Profiles for Chemicals for the Evaluation oftheir Hazards to the environment of the Mediterranean Sea.

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13°“√«‘‡§√“–Àå(Analysis)

°“√«‘‡§√“–Àåª√‘¡“≥·§¥‡¡’ˬ¡¡’À≈“¬«‘∏’ §◊Õ

13.1 Dithizone Methods

°“√«‘‡§√“–Àå¥â«¬«‘∏’π’ÈÕ“»—¬À≈—°°“√∑’Ë«à“ ·§¥‡¡’ˬ¡®–√«¡µ—«°—∫ dithizone„π ¿“«–∑’ˇªìπ¥à“ß ‡ªìπ “√ª√–°Õ∫‡™‘ß´âÕπ∑’Ë¡’§«“¡§ßµ—« Ÿß ·≈–µâÕߢ®—¥‚≈À–Õ◊ËπÊ ∑’Ë®–√«¡µ—«°—∫ dithizone ÕÕ°‰ª°àÕ𠧫“¡∂Ÿ°µâÕߢÕß«‘∏’π’È®–µâÕߢ÷ÈπÕ¬Ÿà°—∫°“√¢®—¥‡Õ“‚≈À–Õ◊ËπÕÕ°‰ª ·≈–°“√ªπ‡ªóôÕπ¢Õß·§¥‡¡’ˬ¡„ππÈ”¬“‡§¡’∑’Ë„™â«‘‡§√“–Àå

«‘∏’π’È à«π„À≠àπ‘¬¡„™â„π°“√µ√«®«‘‡§√“–Àåª√‘¡“≥·§¥‡¡’ˬ¡„πµ—«Õ¬à“ß™’««—µ∂ÿ‡™àπ ªí “«– ™‘Èπ à«πÕ«—¬«– ·≈–„πµ—«Õ¬à“ßÕ“À“√

13.2 Emission Spectroscropy À√◊Õ Spectrography

°“√«‘‡§√“–Àå¥â«¬«‘∏’π’ÈÕ“»—¬À≈—°°“√∑’Ë«à“ Õ–µÕ¡¢Õß‚≈À–®–∂Ÿ°°√–µÿâπ‚¥¬æ≈—ßß“πÀ√◊Õ°√–· ‰øøÑ“ „Àâ· ß∑’Ë¡’ ’·µ°µà“ß°—π‰ª ·≈–· ߇À≈à“π’È®–∂Ÿ°∫—π∑÷°≈ß∫π·ºàπøî≈å¡ ´÷Ëß “¡“√∂𔉪«‘‡§√“–Àå‡æ◊ËÕ∑√“∫™π‘¥·≈–ª√‘¡“≥¢Õß‚≈À–‰¥â

«‘∏’π’È à«π„À≠à„™â«‘‡§√“–Àåª√‘¡“≥‚≈À–„πµ—«Õ¬à“ß™’««—µ∂ÿ „πªí®®ÿ∫—π«‘∏’π’ȉ¥â∂Ÿ°æ—≤π“®π¡’¢’¥§«“¡ “¡“√∂„π°“√µ√«®«—¥µ—«Õ¬à“ß∑’Ë¡’·§¥‡¡’ˬ¡ª√‘¡“≥πâÕ¬Ê ∂÷ß0.002 ppm

13.3 Neutron Activation

°“√«‘‡§√“–Àå¥â«¬«‘∏’π’È∑”‰¥â‚¥¬π”µ—«Õ¬à“߇¢â“Õ“∫√—ß ’π‘«µ√Õπ ‡æ◊ËÕ„À⇰‘¥‡ªìπ‡√¥‘‚Õ‰Õ‚´‚∑ª ·≈â««‘‡§√“–Àåª√‘¡“≥¥â«¬‡§√◊ËÕß¡◊Õ«—¥√—ß ’

13.4 Atomic Absorption Spectrophotometry

°“√«‘‡§√“–Àå¥â«¬«‘∏’π’ÈÕ“»—¬À≈—°°“√∑’Ë«à“ ©’¥µ—«Õ¬à“ß„π√Ÿª “√≈–≈“¬‡¢â“‰ª„π™àÕ߇º“Õÿ≥À¿Ÿ¡‘ Ÿß ‡æ◊ËÕ„ÀâÕ–µÕ¡ºà“π‰ª∫π· ß´÷Ëß¡’ Cathode ‡©æ“–™π‘¥∂⓵—«Õ¬à“ßπ—Èπ¡’‚≈À–Õ¬Ÿà Õ–µÕ¡®“°‚≈À–®–¥Ÿ¥· ß ·≈–Õà“π§à“ absorbance ÕÕ°¡“‡ªìπ‡¡µ√ ‚¥¬ª°µ‘‡ª≈«‰ø∑’Ë„™â„π°“√‡º“®–‡ªìπ acetylene ·µà°Á “¡“√∂„™â propane·∑π‰¥â

„πªí®®ÿ∫—π«‘∏’ atomic absorption ‡ªìπ«‘∏’∑’Ë„™â°—π·æ√àÀ≈“¬„π°“√µ√«®«‘‡§√“–Àåª√‘¡“≥·§¥‡¡’ˬ¡ ´÷Ëß¡’¢’¥§«“¡ “¡“√∂µ√«®«—¥‰¥âµË” ÿ¥∂÷ß 0.005 µg/g

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60 “√Õ—πµ√“¬

14°“√À°√¥(Spills)

‡¡◊ËÕ‡°‘¥°“√À°√¥¢Õß “√ „Àℙ⫑∏’°“√°«“¥‡°Á∫·≈–„π√–À«à“ߪؑ∫—µ‘ß“π‡°Á∫°«“¥„Àâ„™âÕÿª°√≥å™à«¬À“¬„®∑’Ë¡’·ºàπ°√ÕßΩÿÉπ¥â«¬

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·§¥‡¡’ˬ¡ (Cadmium) 61

15°“√∫”∫—¥‡¡◊ËÕ‡°‘¥æ‘…(Treatment of poisoning)

15.1 °“√∫”∫—¥‡¡◊ËÕ‡°‘¥æ‘…‡©’¬∫æ≈—π (acute)

§«“¡‡ªìπæ‘…·∫∫‡©’¬∫æ≈—π∑’ˇ°‘¥¢÷Èπ à«π„À≠à‡°‘¥¢÷Èπ®“°°“√À“¬„®‡Õ“‰Õ·§¥‡¡’ˬ¡‡¢â“‰ª ´÷Ë߇π◊ËÕß¡“®“°°“√Õÿµ “À°√√¡ Õ“°“√‚¥¬∑—Ë«‰ª®–‡°‘¥¢÷Èπ∑—π∑’∑—ÈßÊ ∑’ËÕ“®®–¡’°“√À“¬„®‡¢â“‰ª‡æ’¬ß‰¡à°’Ë™—Ë«‚¡ß Õ“°“√∑’ˇ°‘¥¢÷Èπ‰¥â·°à ·πàπÀπâ“Õ° ‰Õµ‘¥µàÕ°—πÀ“¬„®∂’Ë ª«¥»’√…– ·≈– —Ëπ¥â«¬§«“¡Àπ“« Õ“®∂÷ßµ“¬‰¥â ”À√—∫‚¥¬°“√°‘π‡°‘¥¢÷Èπ‰¥âπâÕ¬¡“°

°“√∫”∫—¥√—°…“ºŸâ∑’Ë¡’Õ“°“√‡©’¬∫æ≈—π ¢—Èπ·√°‚¥¬°“√√—°…“µ“¡Õ“°“√∑’ˇ°‘¥¢÷Èπ‡æ◊ËÕ‰¡à„À⇰‘¥°“√À¡¥ µ‘ ‡™àπ °“√∑”„À⇰‘¥Õ“°“√ßà«ßÀ≈—∫ °“√∫√√‡∑“ °“√À¥‡°√ÁߢÕß°≈â“¡‡π◊ÈÕ ‚¥¬°“√©’¥ “√≈–≈“¬ sodium bicarbonate ·≈– “√ —¡º— ¢Õßglucose-novocaine ‡¢â“‰ª„π‡ âπ‡≈◊Õ¥ ·≈–µâÕß„À⺟âªÉ«¬æ—°ºàÕπ ·≈–∑”„Àâ√à“ß°“¬Õ∫Õÿàπ

„π°√≥’∑’˧«“¡‡ªìπæ‘…¢Õß·§¥‡¡’ˬ¡‡°‘¥¢÷Èπ∑’Ë√–∫∫∑“߇¥‘πÕ“À“√ °Á¥”‡π‘π°“√‡™àπ‡¥’¬«°—∫¢â“ßµâπ æ√âÕ¡∑—Èß°“√≈â“ß∑âÕߥ⫬ “√≈–≈“¬ 5% unithol ª√‘¡“≥200-300 ml ‚¥¬ºà“π∑“ß probe ∑—Èßπ’ȇæ◊ËÕ¥Ÿ¥´—∫æ‘…

„π°“√∫”∫—¥√—°…“Õ“°“√√–§“¬‡§◊ÕߢÕß√–∫∫∑“߇¥‘πÀ“¬„® ∑”‰¥â‚¥¬°“√„À⺟âªÉ«¬ Ÿ¥À“¬„® 2% NaHCO3 ‡æ◊ËÕ∑”„Àâ√–∫∫∑“߇¥‘πÀ“¬„®™ÿà¡™◊Èπ ·≈–Õÿàπæ√âÕ¡∑—Èß„À⺟âªÉ«¬¥◊Ë¡πÈ”·√à∑’ˇªìπ alkaline „π√“¬∑’Ë¡’Õ“°“√‰Õ µâÕß„Àâ codeine ·≈–dionine

„π√“¬∑’ˇπ◊ÈÕ‡¬◊ËÕ„πªÕ¥¡’≈—°…≥–∫«¡πÈ” (lung edema) ∫”∫—¥‚¥¬°“√„ÀâÕÕ°´‘‡®π 40-60% ‡æ◊Ëՙ૬„π°“√À“¬„® æ√âÕ¡∑—Èß©’¥ 10% CaCl2 10-20 ml ·≈– 40%glucose (20 ml) √«¡°—∫ ascorbic acid 500 mg πÕ°®“°π’ȵâÕß©’¥¬“°√–µÿâπÀ—«„® ‡™àπ caffeine, corglucone ·≈– strophathin ‡ªìπµâπ ·≈–„π∫“ß√“¬µâÕß„Àâ‡≈◊Õ¥‡¢â“™à«¬¥â«¬ ”À√—∫„π√“¬∑’˪ե¡’πȔլŸà¡“°®–µâÕ߇®“–‡æ◊ËÕ¥Ÿ¥πÈ”ÕÕ°

§«√„À⺟âªÉ«¬√—∫ª√–∑“𬓪√–‡¿∑ lipotropic, «‘µ“¡‘π ascorbic ·≈–glutamine acids ∑—Èßπ’ȇæ◊ËÕªÑÕß°—π°“√‡°‘¥·º≈∑’˵—∫

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62 “√Õ—πµ√“¬

”À√—∫¬“·°âæ‘… ∑”‰¥â‚¥¬°“√©’¥ unithiol 120-150 ml/day ‡¢â“°≈â“¡‡π◊ÈÕÀ√◊Õ‚¥¬°“√©’¥ 5% unithiol 200-300 ml ‡¢â“‡ âπ‡≈◊Õ¥

15.2 °“√∫”∫—¥√—°…“‡¡◊ËÕ‡°‘¥æ‘…·∫∫‡√◊ÈÕ√—ß (chronic)

„π√“¬∑’ˇªìπæ‘…·∫∫‡√◊ÈÕ√—ßπ—Èπ µâÕß∑”°“√∫”∫—¥√—°…“„π≈—°…≥–∑’ˇªìπ°“√∫”√ÿß√à“ß°“¬¥â«¬Õ“À“√∑’ËÕÿ¥¡«‘µ“¡‘π ‚¥¬‡©æ“–«‘µ“¡‘π¥’ ·≈–·§≈‡´’ˬ¡

„π°“√≈¥§«“¡‡ªìπæ‘…∑’ˇ°‘¥¢÷Èπ‚¥¬°“√„™â¬“·°âæ‘…‰¥âÕ¬à“ß¡’ª√– ‘∑∏‘¿“æ®–µâÕߥ”‡π‘π°“√∑—π∑’‡¡◊ËÕæ∫«à“¡’Õ“°“√‡°‘¥¢÷Èπ ∂â“À“°¡“„™â¬“·°âæ‘…¿“¬À≈—ß®“°∑’ËÕ“°“√‡°‘¥¢÷Èπ‡ªìπ√–¬–‡«≈“π“π·≈â« ª√– ‘∑∏‘¿“æ¢Õ߬“·°âæ‘…°Á®–≈¥≈ß

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·§¥‡¡’ˬ¡ (Cadmium) 63

16°“√®—¥°“√¢Õ߇ ’¬(Waste management)

16.1 ¢Õ߇ ’¬∑’ˇªìπ¢Õß·¢Áß

«‘∏’∑’Ë„™â„π°“√®—¥°“√¢Õ߇ ’¬ª√–‡¿∑π’È §◊Õ

(1) °“√À¡ÿπ‡«’¬π°≈—∫¡“„™âª√–‚¬™πå„À¡à (recycling) ‡™à𠇻…‚≈À–À√◊Õ‡»…™‘Èπ à«π¢Õß‚≈À–·§¥‡¡’ˬ¡ À√◊Õ “√ª√–°Õ∫·§¥‡¡’ˬ¡ ‚¥¬°“√§—¥·¬°ª√–‡¿∑·≈–·¬°„ à¿“™π–∫√√®ÿ æ√âÕ¡∑—Èßµ‘¥©≈“°√–∫ÿ™π‘¥„Àâ™—¥‡®π‡æ◊ËÕπ”°≈—∫‰ª„™â„π°√–∫«π°“√º≈‘µ„À¡à

(2) ‚¥¬°“√∂¡∑’Ë (landfill) °≈à“«§◊Õ “√ª√–°Õ∫·§¥‡¡’ˬ¡„π√Ÿª “√-≈–≈“¬ ∑’Ë∂Ÿ°‡ª≈’ˬπ„ÀâÕ¬Ÿà„π√Ÿª∑’ˉ¡à≈–≈“¬ ®–¡’≈—°…≥–‡ªìπ°“°¢Õß·¢Áß´÷Ëß°“°‡À≈à“π’È®–∂Ÿ°∑”„À⇪ìπ·∑àßÀ√◊Õ°âÕπ (solidification) °àÕπ𔉪ΩíßÀ√◊Õ∂¡ „π∑’ˇÀ¡“– ¡µàÕ‰ª

16.2 ¢Õ߇ ’¬∑’ˇªìπ¢Õ߇À≈«

«‘∏’∑’Ë„™â„π°“√∫”∫—¥À√◊Õ°”®—¥¢Õ߇ ’¬ª√–‡¿∑π’È ¡’À≈“¬«‘∏’§◊Õ

(1) ‚¥¬„™â°√–∫«π°“√∫”∫—¥∑“ß°“¬¿“槫∫§Ÿà‰ª°—∫∑“߇§¡’ (physico-chemical treatment process) ´÷Ë߇ªìπ«‘∏’∑’Ë„™â„π°“√∫”∫—¥πÈ”∑‘Èß‚¥¬∑’˪√‘¡“≥·§¥‡¡’ˬ¡„ππÈ”∑‘ÈßÕ¬Ÿà„π™à«ß 0.2-2,000 ¡‘≈≈‘°√—¡/≈‘µ√·µà„ππÈ”∑‘Èß‚¥¬∑—Ë«Ê ‰ª®–¡’ª√‘¡“≥·§¥¡’ˬ¡πâÕ¬°«à“ 100 ¡‘≈≈‘°√—¡/≈‘µ√ ·≈–«‘∏’∑’Ë “¡“√∂„™â„π°“√∫”∫—¥‰¥â·°à ion exchange, electro-lysis, electrodialysis, cementation, adsorption ·µàªí®®ÿ∫—π«‘∏’∑’Ë„™â°—π·æ√àÀ≈“¬§◊Õ °“√µ°µ–°Õ𷧥‡¡’ˬ¡¥â«¬¥à“ß„ÀâÕ¬Ÿà„π√Ÿª¢Õßhydroxide À√◊Õ„π√Ÿª¢Õ߇°≈◊Õ „π°√–∫«π°“√π’È¥à“ß∑’Ë„™â„π°“√µ°µ–°Õπ ‰¥â·°à ªŸπ¢“« (lime), caustic soda (sodium hydroxide)À√◊Õ sodium carbonate ®“°π—Èπ ª≈àÕ¬µ–°Õπ‡À≈à“π—Èπµ°≈ß¡“¥â«¬πÈ”Àπ—°¢Õßµ–°Õπ‡Õß πÕ°®“°π’È ∫“ߧ√—È߬—ßµâÕß„™â√–∫∫Õ◊Ëπʇ √‘¡‡¢â“‰ªÕ’° ‡™àπ

- „π°√≥’∑’ËπÈ”∑‘Èß¡’‰´¬“‰π¥å À√◊Õ‡°≈◊Õ·Õ¡‚¡‡π’¬µâÕß°”®—¥ “√-ª√–°Õ∫‡À≈à“π’ÈÕÕ°°àÕπ ‡π◊ËÕß®“° “√ª√–°Õ∫‡À≈à“π’È®–‰ª∑”„Àâ

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64 “√Õ—πµ√“¬

ª√– ‘∑∏‘¿“æ¢Õß°“√µ°µ–°Õπ≈¥≈ß

- πÈ”„ ®“°°“√µ°µ–°Õπ∑“߇§¡’ ‡æ◊ËÕ„ÀâπÈ”„ °àÕπª≈àÕ¬∑‘Èß¡’ª√‘¡“≥·§¥‡¡’ˬ¡≈¥≈ßÕ’° ®÷ßµâÕߺà“π‡∑§π‘§Õ◊ËπÊ Õ’° ‡™àπ activatedcarbon, reverse osmosis ·≈– iron exchange Õ¬à“ß„¥Õ¬à“ßÀπ÷ËßÀ√◊ÕÀ≈“¬Ê ‡∑§π‘§√«¡°—π

- ”À√—∫ sludge ∑’˵°µ–°Õπ≈ß¡“ ´÷Ëß¡’ª√‘¡“≥¢Õß·¢Á߇撬ß2-10% ·≈–·§¥‡¡’ˬ¡ 10-1,000 ppm ®–µâÕß∑”°“√≈¥ª√‘¡“µ√‚¥¬°“√¢®—¥πÈ”ÕÕ°‰ª°àÕπ (dewatering process) ‡™àπ °“√°√Õߥ⫬°“√„™â Ÿ≠≠“°“» À√◊Õ„™â·√ߥ—π ŸßÊ (vacuum or high pressurefiltration) ®–‡À≈◊Õµ–°Õπ∑’ËÕ¬Ÿà∫π·ºàπ°√Õß∑’ˇ√’¬°«à“ filter cakeª√–¡“≥ 15-25% ·≈–¡’‡ªÕ√凴Áπµå¢Õß·¢Áß 20-50% ®“°π—Èπ®÷ßπ”filter cake ‰ª°”®—¥∑‘Èß ‚¥¬°“√∂¡∑’Ë (landfill)

(2) ‚¥¬µ°µ–°Õπ„ÀâÕ¬Ÿà„π√Ÿª¢Õß sulphide ‡π◊ËÕß®“°„π°“√¢®—¥‚≈À–Àπ—°·µà≈–™π‘¥ÕÕ°®“°πÈ”∑‘Èß„À≥⡓°∑’Ë ÿ¥ ‚¥¬°“√µ°µ–°Õπ„ÀâÕ¬Ÿà„π√Ÿª¢Õß hydroxide ªí®®—¬ ”§—≠§◊Õ pH ·≈–Õߧåª√–°Õ∫À√◊Õ≈—°…≥–¢ÕßπÈ”∑‘Èß ‚¥¬‡©æ“–Õ¬à“߬‘ËßπÈ”∑‘Èß®“°°√–∫«π°“√º≈‘µ‚≈À–®–¡’Õ‘∑∏‘æ≈µàÕ°“√≈–≈“¬¢Õß cadmium hydroxide ¥—ßπ—Èπ∑“߇≈◊Õ°Õ’°«‘∏’Àπ÷Ëß„π°“√∑’Ë®–¢®—¥‚≈À–Àπ—°·§¥‡¡’ˬ¡ÕÕ°®“°πÈ”∑‘Èß„À≥⡓°∑’Ë ÿ¥§◊Õ °“√µ°µ–°Õπ „ÀâÕ¬Ÿà„π√Ÿª hydroxide ·≈⫵“¡¥â«¬°“√µ°µ–°Õπ‡Õ“·§¥‡¡’ˬ¡∫“ß à«π∑’ˬ—߇À≈◊ÕÕ¬Ÿà„ππÈ”∑‘Èß„ÀâÕ¬Ÿà„π√Ÿªsulphide

«‘∏’°“√µ°µ–°Õπ„ÀâÕ¬Ÿà„π√Ÿª sulphide ¡’¢âÕ®”°—¥∫“ߪ√–°“√ §◊Õ

- cadmium sulphide ∑’˵°µ–°Õπ≈ß¡“¡’·π«‚πâ¡∑’Ë®–Õ¬Ÿà„π√Ÿª¢Õßµ–°Õπ∑’Ë·¢«π≈Õ¬

- hydrogen sulphide (H2S) ´÷Ë߇ªìπ°ä“´∑’ˇ°‘¥¢÷Èπ®“°°“√∑’Ësulphide ions ∑”ªØ‘°‘√‘¬“°—∫πÈ” ·≈–°ä“´™π‘¥π’È¡’°≈‘Ëπ‡À¡Áπ·≈–¡’§«“¡‡ªìπæ‘…µàÕ√à“ß°“¬

- ®–µâÕß°”®—¥ sulphide à«π∑’ˇÀ≈◊ÕÕ¬Ÿà„ππÈ”ÕÕ°‰ª°àÕπª≈àÕ¬∑‘È߇™àπ ‚¥¬°“√ oxidise ¥â«¬ manganese salts

(3) °“√·¬°°≈—∫¡“„™âª√–‚¬™πå (recovering) ”À√—∫ “√ª√–°Õ∫·§¥‡¡’ˬ¡ ∑’ËÕ¬Ÿà„π√Ÿª “√≈–≈“¬ ‡™àπ cadmium sulphate ∑”‰¥â

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·§¥‡¡’ˬ¡ (Cadmium) 65

‚¥¬°“√µ°µ–°Õπ „ÀâÕ¬Ÿà„π√Ÿª sulphides ∑”„Àâµ–°Õπ·Àâß ·≈â« àß°≈—∫‰ª¬—ß∫√‘…—∑À√◊Õ‚√ßß“π∑’Ë∑”°“√·¬° (recovery) ·§¥‡¡’ˬ¡µàÕ‰ª

(4) „π°√≥’¢ÕßπÈ”∑‘Èß®“°°“√‡§≈◊Õ∫‚≈À–¥â«¬·§¥‡¡’ˬ¡ “¡“√∂¢®—¥‰¥â‚¥¬°“√π”™‘Èπ à«π‚≈À–∑’˺à“π¢∫«π°“√‡§≈◊Õ∫·§¥‡¡’ˬ¡≈â“ß„π∂—ßÀ√◊ÕÕà“ßπÈ”∑’ˉ¡à‰¥âª≈àÕ¬πÈ”‰À≈∑‘Èßµ≈Õ¥ ∑—Èßπ’È ‡æ◊ËÕ≈¥ª√‘¡“≥·§¥‡¡’ˬ¡∑’ËÕÕ°¡“æ√âÕ¡°—∫πÈ”∑’˪≈àÕ¬ÕÕ°¡“ Õ’°∑—Èß°“√¢®—¥‡Õ“·§¥‡¡’ˬ¡ÕÕ°®“°πÈ”≈â“ߥ—ß°≈à“«∑”‰¥âßà“¬¢÷Èπ ·≈–°“√¢®—¥·§¥‡¡’ˬ¡ÕÕ°¡“∑”‰¥â‚¥¬°“√‡µ‘¡¥à“ß ‡π◊ËÕß®“°∑’Ë pH ŸßÊ ®–∑”„Àâ·§¥‡¡’ˬ¡µ°µ–°Õπ≈ß¡“‰¥â„π∑“ߪؑ∫—µ‘®–‡µ‘¡ calcium oxide ≈߉ª „πÕ—µ√“ à«π1 : 2 (calcium oxide 1 à«π µàÕ cadmium 2 à«π) ´÷Ëߪ√– ‘∑∏‘¿“æ„π°“√¢®—¥·§¥‡¡’ˬ¡ Ÿß∂÷ß 98.93%

16.3 Õ“°“»‡ ’¬

·§¥‡¡’ˬ¡∑’˪πÕÕ°¡“°—∫Õ“°“»‡ ’¬∑’Ë√–∫“¬ÕÕ°¡“ ®–Õ¬Ÿà„π√Ÿª¢Õßaerosols °”®—¥‚¥¬„™â electrofilter À√◊Õ bag filter ‡æ◊ËÕ®—∫ cadmium aerosol °àÕπ√–∫“¬Õ“°“»‡ ’¬ÕÕ°‰ª

16.4 ¥‘π∑’˪π‡ªóôÕπ¥â«¬·§¥‡¡’ˬ¡

®—¥°“√‰¥â‚¥¬¢ÿ¥¥‘π à«π∫π∑’Ë∂Ÿ°ªπ‡ªóôÕπ‡æ◊ËÕ𔉪Ωíß °àÕπ𔉪Ωíß®–µâÕ߇µ‘¡ “√∑’Ë®–‰ª‡ª≈’Ë¬π·§¥‡¡’ˬ¡∑’˪π‡ªóôÕπÕ¬Ÿà„π¥‘π„ÀâÕ¬Ÿà„π√Ÿª∑’Ëæ◊™‰¡à “¡“√∂¥Ÿ¥´÷¡‰¥â ·≈–∂â“À“°®–ª≈Ÿ°æ◊™°Á§«√®–ª≈Ÿ°æ◊™∑’Ë∑π∑“πµàÕ°“√‡®√‘≠‡µ‘∫‚µ„π¥‘π∑’Ë¡’‚≈À– Ÿß ·≈–‡ªìπæ◊™™π‘¥∑’ˉ¡à‰¥âπ”¡“√—∫ª√–∑“π

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66 “√Õ—πµ√“¬

17¢âÕ‡ πÕ·π–·≈–°≈‰°∑“ß°ÆÀ¡“¬

(Recommendation & legalmechanism)

17.1 ¡“µ√°“√§«∫§ÿ¡¿“¬„πª√–‡∑»

ª√–‡∑»‰∑¬‰¥â°”Àπ¥„Àâ¡’ æ.√.∫. «—µ∂ÿÕ—πµ√“¬ æ.». 2535 ¢÷Èπ¡“‚¥¬æ.√.∫.¥—ß°≈à“«°”À𥫗µ∂ÿÕ—πµ√“¬ÕÕ°‡ªìπ 4 ª√–‡¿∑ §◊Õ

(1) «—µ∂ÿÕ—πµ√“¬™π‘¥∑’Ë 1 ‰¥â·°à «—µ∂ÿÕ—πµ√“¬∑’Ë°“√º≈‘µ °“√π”‡¢â“ °“√ àßÕÕ° À√◊Õ°“√¡’‰«â„π§√Õ∫§√ÕßµâÕߪؑ∫—µ‘µ“¡À≈—°‡°≥±å·≈–«‘∏’°“√∑’Ë°”Àπ¥

(2) «—µ∂ÿÕ—πµ√“¬™π‘¥∑’Ë 2 ‰¥â·°à «—µ∂ÿÕ—πµ√“¬∑’Ë°“√º≈‘µ °“√π”‡¢â“ °“√ àßÕÕ° À√◊Õ°“√¡’‰«â„π§√Õ∫§√ÕßµâÕß·®âß„Àâæπ—°ß“π‡®â“Àπâ“∑’Ë∑√“∫°àÕπ·≈–µâÕߪؑ∫—µ‘µ“¡À≈—°‡°≥±å·≈–«‘∏’°“√∑’Ë°”Àπ¥¥â«¬

(3) «—µ∂ÿÕ—πµ√“¬™π‘¥∑’Ë 3 ‰¥â·°à «—µ∂ÿÕ—πµ√“¬∑’Ë°“√º≈‘µ °“√π”‡¢â“ °“√ àßÕÕ° À√◊Õ°“√¡’‰«â„π§√Õ∫§√ÕßµâÕ߉¥â√—∫Õπÿ≠“µ

(4) «—µ∂ÿÕ—πµ√“¬™π‘¥∑’Ë 4 ‰¥â·°à «—µ∂ÿÕ—πµ√“¬∑’ËÀâ“¡¡‘„Àâ¡’°“√º≈‘µ °“√π”‡¢â“ °“√ àßÕÕ° À√◊Õ°“√¡’‰«â„π§√Õ∫§√Õß

cadmium ®—¥Õ¬Ÿà„πª√–‡¿∑∑’Ë 3 ‰¥â·°à «—µ∂ÿÕ—πµ√“¬∑’Ë°“√º≈‘µ °“√ àßÕÕ° À√◊Õ°“√¡’‰«â„π§√Õ∫§√ÕßµâÕ߉¥â√—∫Õπÿ≠“µ®“°°√¡‚√ßß“πÕÿµ “À°√√¡

17.1.1 ¡“µ√∞“𧫓¡ª≈Õ¥¿—¬„π°“√∑”ß“π

ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß “√·§¥‡¡’ˬ¡∑’ˬա„Àâ¡’‰¥â„π ∂“πª√–°Õ∫°“√µ“¡ª√–°“»°√–∑√«ß¡À“¥‰∑¬ æ.». 2520 ‡√◊ËÕߧ«“¡ª≈Õ¥¿—¬„π°“√∑”ß“π‡°’Ë¬«°—∫¿“«–·«¥≈âÕ¡ ( “√‡§¡’) ´÷Ëß°”Àπ¥‰«â¥—ßπ’È

(1) ª√‘¡“≥§«“¡‡¢â¡¢âπ¢ÕßΩÿÉ𷧥‡¡’ˬ¡„π∫√√¬“°“»°“√∑”ß“π‚¥¬‡©≈’ˬµ≈Õ¥√–¬–‡«≈“∑”ß“πª°µ‘ ‰¡à‡°‘π 0.2 mg/m3 ·≈–ª√‘¡“≥§«“¡‡¢â¡¢âπ∑’ËÕ“®¬Õ¡„Àâ¡’‰¥â§◊Õ 0.6 mg/m3

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·§¥‡¡’ˬ¡ (Cadmium) 67

(2) ª√‘¡“≥§«“¡‡¢â¡¢âπ¢ÕßøŸ¡·§¥‡¡’ˬ¡ (cadmium fume)‚¥¬‡©≈’ˬµ≈Õ¥√–¬–‡«≈“∑”ß“πª°µ‘ ‰¡à‡°‘π 0.1 mg/m3 ·≈–ª√‘¡“≥§«“¡‡¢â¡¢âπ∑’ËÕ“®¬Õ¡„Àâ¡’‰¥â§◊Õ 3 mg/m3

17.1.2 ¡“µ√∞“ππÈ”¥◊Ë¡

¡“µ√∞“ππÈ”¥◊Ë¡ ∑’Ë°”À𥂥¬Àπ૬ߓπµà“ßÊ · ¥ß‰«â„πµ“√“ß∑’Ë 16

µ“√“ß∑’Ë 16 ¡“µ√∞“ππÈ”¥◊Ë¡¢Õߪ√–‡∑»‰∑¬

Àπ૬ߓπ∑’Ë°”Àπ¥ ª√‘¡“≥∑’ˬա„Àâ¡’‰¥â (mg/l)

°√–∑√«ß “∏“√≥ ÿ¢ 0.01

°√¡∑√—欓°√∏√≥’ 0.01

”π—°ß“π¡“µ√∞“πº≈‘µ¿—≥±åÕÿµ “À°√√¡ 0.01

17.1.3 ¡“µ√∞“ππÈ”∑‘ÈßÕÿµ “À°√√¡

(1) ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’ˬա„Àâ¡’‰¥â„ππÈ”∑’Ë√–∫“¬∑‘ÈßÕÕ°®“°‚√ßß“πÕÿµ “À°√√¡ µâÕ߉¡à‡°‘π 0.03 mg/l µ“¡ª√–°“»°√–∑√«ßÕÿµ “À°√√¡©∫—∫∑’Ë 12 (æ.». 2512) ÕÕ°µ“¡§«“¡„πæ√–√“™∫—≠≠—µ‘‚√ßß“π æ.». 2512

(2) ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’ˬա„Àâ¡’‰¥â„ππÈ”∑’Ë√–∫“¬∑‘ÈßÕÕ°®“°‚√ßß“πÕÿµ “À°√√¡ª√–‡¿∑∂≈ÿß‚≈À– —ß°– ’ µâÕ߉¡à‡°‘π 0.1 mg/l µ“¡ª√–°“»°√–∑√«ßÕÿµ “À°√√¡ ©∫—∫∑’Ë 10 (æ.». 2521) ÕÕ°µ“¡§«“¡„πæ√–√“™∫—≠≠—µ‘‚√ßß“π æ.». 2512

(3) ‚√ßß“πÕÿµ “À°√√¡∑’Ë„™â‚≈À–Àπ—°„π°√–∫«π°“√º≈‘µ ´÷Ëß¡’ª√‘¡“≥πÈ”∑‘Èßµ—Èß·µà 50 ≈Ÿ°∫“»°å‡¡µ√¢÷Èπ‰ª ·≈–¡’ª√‘¡“≥‚≈À–Àπ—°·§¥‡¡’ˬ¡µ—Èß·µà1,500 ¡‘≈≈‘°√—¡µàÕ«—π¢÷Èπ‰ª ‚√ßß“π¥—ß°≈à“«µâÕß¡’ºŸâ§«∫§ÿ¡·≈–ºŸâªØ‘∫—µ‘ß“πª√–®”‡§√◊ËÕ߇æ◊ËÕ√—∫º‘¥™Õ∫√–∫∫ªÑÕß°—π ‘Ëß·«¥≈âÕ¡‡ªìπæ‘… ‚¥¬∑’˺Ÿâ§«∫§ÿ¡¥Ÿ·≈µâÕ߇ªìπºŸâ¡’§ÿ≥«ÿ≤‘«‘»«°√√¡»“ µ√∫—≥±‘µ À√◊Õ«‘∑¬“»“ µ√∫—≥±‘µ “¢“‡§¡’ À√◊Õ “¢“‡§¡’‡∑§π‘§ À√◊Õ “¢“Õ◊Ëπ∑’Ë¡’ªïª√– ∫°“√≥å∑“ߥâ“π ‘Ëß·«¥≈âÕ¡ ´÷Ë߉¥â√—∫§«“¡‡ÀÁπ™Õ∫®“°°√¡‚√ßß“πÕÿµ “À°√√¡ ”À√—∫°√≥’∑’ˇªìπ∫√‘…—∑«‘»«°√∑’˪√÷°…“ (engineering consultant firm)µâÕߪ√–°Õ∫¥â«¬ºŸâ¡’§ÿ≥«ÿ≤‘¥—ß°≈à“«¢â“ßµâπ à«πºŸâªØ‘∫—µ‘ß“πª√–®”‡§√◊ËÕß (operator)µâÕß¡’§ÿ≥«ÿ≤‘¡—∏¬¡»÷°…“µÕπµâπ ·≈–‰¥â√—∫°“√√—∫√Õß®“°ºŸâ§«∫§ÿ¡¥Ÿ·≈¢â“ßµâ𠵓¡

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68 “√Õ—πµ√“¬

ª√–°“»°√–∑√«ßÕÿµ “À°√√¡©∫—∫∑’Ë 13 (æ.». 2525) ÕÕ°µ“¡§«“¡„πæ√–√“™∫—≠≠—µ‘‚√ßß“π æ.». 2512

17.1.4 ¡“µ√∞“π·À≈àßπÈ”

ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’ˬա„Àâ¡’‰¥â„π·À≈àßπÈ”º‘«¥‘π´÷Ëß¡‘„™à∑–‡≈ µ“¡√à“ߪ√–°“»°√–∑√«ß«‘∑¬“»“ µ√å ‡∑§‚π‚≈¬’·≈–°“√æ≈—ßß“π ‡√◊ËÕß °”Àπ¥¡“µ√∞“π·≈–«‘∏’°“√µ√«® Õ∫§ÿ≥¿“æπÈ”„π·À≈àßπÈ”º‘«¥‘π´÷Ëß¡‘„™à∑–‡≈ §◊Õ

(1) „ππÈ”∑’Ë¡’§«“¡°√–¥â“ß„π√Ÿª¢Õß CaCO3 ‰¡à‡°‘π°«à“ 100 mg/lª√‘¡“≥¢Õß·§¥‡¡’ˬ¡µâÕ߉¡à‡°‘π 0.005 mg/l

(2) „ππÈ”∑’Ë¡’§«“¡°√–¥â“ß„π√Ÿª¢Õß CaCO3 ‡°‘π°«à“ 100 mg/lª√‘¡“≥¢Õß·§¥‡¡’ˬ¡µâÕ߉¡à‡°‘π 0.05 mg/l

17.1.5 ¡“µ√∞“πÕ“°“»‡ ’¬ (emission standard)

¡“µ√∞“πÕ“°“»‡ ’¬∑’Ë¡’·§¥‡¡’ˬ¡ ÷Ë߬‘π¬Õ¡„Àâ√–∫“¬‰¥â®“°·À≈àß°”‡π‘¥∑ÿ°·À≈àß ®–µâÕ߉¡à‡°‘π 1 ¡‘≈≈‘°√—¡µàÕ≈Ÿ°∫“»°å‡¡µ√ (‡ªìπ‡°≥±å∑’Ë°√¡‚√ßß“πÕÿµ “À°√√¡¬÷¥∂◊Õ„™â‡ªìπ°“√¿“¬„π¬—߉¡à‰¥â°”À𥇪ìπ°ÆÀ¡“¬)

17.2 ¡“µ√°“√§«∫§ÿ¡¢Õßµà“ߪ√–‡∑»

17.2.1 ¡“µ√∞“𧫓¡ª≈Õ¥¿—¬„π°“√∑”ß“π

§à“ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡·≈– “√ª√–°Õ∫·§¥‡¡’ˬ¡∑’ˬա„Àâ¡’‰¥â„π∫√√¬“°“»¢Õß ∂“πª√–°Õ∫°“√ ∑’Ë°”À𥂥¬Àπ૬ߓπµà“ßÊ · ¥ß‰«â„πµ“√“ß∑’Ë 17

17.2.2 ¡“µ√∞“π„π‡≈◊Õ¥

ª√–‡∑» Àæ—π∏å “∏“√≥√—∞‡¬Õ√¡—π ‰¥â‡ πÕ·π–«à“„π‡≈◊Õ¥¢Õߧπß“π‰¡à§«√¡’·§¥‡¡’ˬ¡‡°‘π 15 µg/l

17.2.3 ¡“µ√∞“π„πªí “«–

ª√–‡∑» Àæ—π∏å “∏“√≥√—∞‡¬Õ√¡—π ‰¥â‡ πÕ·π–«à“„πªí “«–¢Õߧπß“π‰¡à§«√¡’·§¥‡¡’ˬ¡‡°‘π 15 µg/l

17.2.4 ¡“µ√∞“ππÈ”¥◊Ë¡

ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡À√◊Õ “√ª√–°Õ∫¢Õß·§¥‡¡’ˬ¡∑’ˬա„Àâ¡’‰¥â„ππÈ”¥◊Ë¡ (§”π«≥ÕÕ°¡“„π√Ÿª¢Õß Cd) ∑’Ë°”À𥂥¬Àπ૬ߓπµà“ßÊ · ¥ß‰«â„πµ“√“ß∑’Ë 18

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·§¥‡¡’ˬ¡ (Cadmium) 69

µ“√“ß∑’Ë 17 ¡“µ√∞“πª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡„π ∂“πª√–°Õ∫°“√¢Õßµà“ߪ√–‡∑»

Àπ૬ߓπÀ√◊Õ §à“¡“µ√∞“π (mg/m3)À¡“¬‡Àµÿ

ª√–‡∑»∑’Ë°”Àπ¥ TWA1/ CLV2/ STEL3/

‡™§‚° ‚≈«“‡°’¬ (REG) 0.05 0.1 - -

≠’˪ÿÉπ (REG) 0.05 - - -

À√“™Õ“≥“®—°√ (REC) 0.05 - - „™â ”À√—∫°“√§«∫§ÿ¡ “√·§¥‡¡’ˬ¡·≈– “√ª√–°Õ∫¢Õß·§¥‡¡’ˬ¡ (¬°‡«âπcadmium oxide ·≈–cadmium sulfidepigments) ΩÿÉπ ·≈–øŸ¡‚¥¬°“√§”π«≥„π√Ÿª¢Õß·§¥‡¡’ˬ¡

«’‡¥π (REG) 0.02 - - TWA ‡ªìπ§à“‡©≈’ˬ„π 1 «—π(ΩÿÉπ∑’ËÀ“¬„® ·≈– ”À√—∫‚√ßß“π„À¡àÀ√◊Õ‡¢â“‰ª) ª√—∫ª√ÿ߇§√◊ËÕß®—°√„À¡à„Àâ„™â0.05 §à“ lD-TWA = 0.01

(ΩÿÉπ∑—ÈßÀ¡¥) mg/m3

ACGIH4/ À√—∞Õ‡¡√‘°“ 0.05 - 0.2 -(REC)

À√—∞Õ‡¡√‘°“ (REG) 0.2 0.6 - -(Cd dust) (Cd dust)

0.1 0.3 - -(Cd fume) (Cd fume)

Õߧ尓√Õπ“¡—¬‚≈°, 0.01 - - ∑—Èß Cd ∑’ËÕ¬Ÿà„π√ŸªΩÿÉπ·≈–WHO (REC) øŸ¡

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70 “√Õ—πµ√“¬

µ“√“ß∑’Ë 17 (µàÕ)

Àπ૬ߓπÀ√◊Õ §à“¡“µ√∞“π (mg/m3)À¡“¬‡Àµÿ

ª√–‡∑»∑’Ë°”Àπ¥ TWA1/ CLV2/ STEL3/

À¿“æ·Ààß “∏“√≥√—∞ 0.03 0.1 -‚´‡«’¬µ —ߧ¡π‘¬¡ (CdO) Õ¬Ÿà„π√Ÿª¢Õß aerosol(REG) - 0.1 -

(Cdstearate,as Cd)

Õ“√凮πµ‘π“ (REG) 0.05 - 0.15 -(dust,aerosol)

0.05 - 0.05 -(fume) (fume)

1/ TWA = Time Weighted Average §à“ª√‘¡“≥§«“¡‡¢â¡¢âπ‡©≈’ˬµ≈Õ¥√–¬–‡«≈“∑”ß“πª°µ‘ 8 ™—Ë«‚¡ßµàÕ«—π

2/ CLV = Ceiling Value §à“ª√‘¡“≥§«“¡‡¢â¡¢âπ Ÿß ÿ¥∑’ˬա„Àâ¡’‰¥â3/ STEL = Short Term Exposure Limit §à“ª√‘¡“≥§«“¡‡¢â¡¢âπ Ÿß ÿ¥„π™à«ß

‡«≈“®”°—¥ ´÷Ëߪ°µ‘„π‡«≈“ 15 π“∑’ ·≈–‰¡à§«√‡°‘¥¢÷Èπ¡“°°«à“ 4 §√—Èß„π 1 «—π

4/ ACGIH = American Conference of Government Industrial HygienistsREG ‡ªìπ‡°≥±åÀ√◊Õ¡“µ√∞“π∑’Ë°”À𥇪ìπ¢âÕ∫—ߧ—∫µ“¡°ÆÀ¡“¬REC ‡ªìπ‡°≥±åÀ√◊Õ¡“µ√∞“π∑’Ë°”Àπ¥À√◊Õ‡ πÕ·π–¢÷Èπ ‰¡à‰¥â°”À𥇪ìπ

µ—«∫∑°ÆÀ¡“¬

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·§¥‡¡’ˬ¡ (Cadmium) 71

µ“√“ß∑’Ë 18 ¡“µ√∞“ππÈ”¥◊Ë¡¢Õßµà“ߪ√–‡∑»

Àπ૬ߓπÀ√◊Õª√–‡∑»∑’Ë°”Àπ¥ ª√‘¡“≥ Cd ∑’ˬա„Àâ¡’‰¥â (mg/l)

‡™§‚° ‚≈«“‡°’¬ 0.01

Àæ—π∏å “∏“√≥√—∞‡¬Õ√¡—π 0.006

°≈ÿࡪ√–™“§¡‡»√…∞°‘®¬ÿ‚√ª (EEC)1/ 0.005

À√“™Õ“≥“®—°√ 0.005

≠’˪ÿÉπ 0.01

À√—∞Õ‡¡√‘°“ 0.01

Õߧ尓√Õπ“¡—¬‚≈° (WHO) 0.005

1/ EEC = European Economic Community

17.2.5 ¡“µ√∞“ππÈ”∑‘Èß

ª√–‡∑» Àæ—π∏å “∏“√≥√—∞‡¬Õ√¡—π‰¥â°”À𥉫â∂â“¡’°“√√–∫“¬πÈ”∑‘Èß∑’Ë¡’·§¥‡¡’ˬ¡≈ß Ÿà·À≈àßπÈ”„πª√‘¡“≥ªï≈– 100 °√—¡ À√◊Õ¡“°°«à“ °“√√–∫“¬πÈ”∑‘Èßπ—Èπ®–µâÕ߇ªìπ‰ªµ“¡°Æ‡°≥±åµ“¡∑’Ë√—∞°”À𥉫â

°≈ÿࡪ√–™“§¡‡»√…∞°‘®¬ÿ‚√ª (EEC) ‰¥â°”À𥉫â«à“ ‡æ◊ËÕªÑÕß°—π¡‘„Àâ “√·§¥‡¡’ˬ¡À√◊Õ “√ª√–°Õ∫·§¥‡¡’ˬ¡‡¢â“‰ªªπ‡ªóôÕπ„π·À≈àßπÈ”„µâ¥‘πª√–‡∑» ¡“™‘°®–µâÕߥ”‡π‘π°“√¥—ßπ’È

(1) Àâ“¡¡‘„Àâ¡’°“√√–∫“¬πÈ”∑‘Èß≈ß Ÿà·À≈àßπÈ”„µâ¥‘π‚¥¬µ√ß

(2) °“√°”®—¥πÈ”∑‘Èß„¥„¥°Áµ“¡∑’Ë®–𔉪 Ÿà°“√ªπ‡ªóôÕπ¢Õß·§¥‡¡’ˬ¡„π·À≈àßπÈ”„µâ¥‘π ®–µâÕ߉¥â√—∫§«“¡‡ÀÁπ™Õ∫®“°æπ—°ß“π‡®â“Àπâ“∑’˺Ÿâ¡’Õ”π“®°àÕπ

(3) ®–µâÕßπ”‡Õ“¡“µ√°“√∑’ˇªìπ∑’ˬա√—∫«à“‡À¡“– ¡¡“„™â‡æ◊ËÕ°“√ªÑÕß°—π°“√ªπ‡ªóôÕπµàÕπÈ”„µâ¥‘π

πÕ°®“°π’È EEC ¬—߉¥â°”Àπ¥§à“ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’ˬա„Àâ√–∫“¬∑‘ÈßÕÕ°¡“®“°°‘®°“√Õÿµ “À°√√¡ª√–‡¿∑µà“ßÊ ‰¥â‰¡à‡°‘π 0.2 mg/l

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72 “√Õ—πµ√“¬

„π°√≥’∑’Ë¡’°“√√–∫“¬πÈ”∑‘Èß®“°Õÿµ “À°√√¡ titanium dioxideª√–‡∑» ¡“™‘° “¡“√∂‡√’¬°√âÕß„Àâ¡’°“√µ‘¥µ“¡µ√«® Õ∫ª√‘¡“≥·§¥‡¡’ˬ¡„ππÈ”∑’ˉ¡àºà“π°“√°√Õß À√◊Õ„ππÈ”∑’Ë°√Õß·≈â«·≈–„πµ–°Õπ·¢«π≈Õ¬Õ¬à“ß„¥Õ¬à“ßÀπ÷ËßÕ¬à“ßπâÕ¬ªï≈– 3 §√—Èß √«¡∑—Èß„Àâ¡’°“√µ√«® Õ∫„π¥‘πµ–°Õπ·≈– ‘Ëß¡’™’«‘µ (organisms) Õ¬à“ßπâÕ¬ªï≈–§√—Èß

ª√–‡∑»≠’˪ÿÉπ ‰¥â°”Àπ¥§à“ª√‘¡“≥·§¥‡¡’ˬ¡∑’ˬա„Àâª≈àÕ¬ÕÕ°¡“°—∫πÈ”∑‘È߉¥â‰¡à‡°‘π 0.1 mg/l

ª√–‡∑»Õ“√凮πµ‘πà“ ‰¥â°”Àπ¥§à“ª√‘¡“≥·§¥‡¡’ˬ¡∑’ˬա„Àâª≈àÕ¬ÕÕ°¡“°—∫πÈ”∑‘ÈßÕÿµ “À°√√¡‰¥â‰¡à‡°‘π 0.1 mg/l

ª√–‡∑» À√—∞Õ‡¡√‘°“‰¥â°”À𥇰’ˬ«°—∫‡√◊ËÕßπÈ”∑‘Èߥ—ßπ’È

(1) °“√√–∫“¬·§¥‡¡’ˬ¡∑‘Èß≈ß Ÿà·À≈àßπÈ”®–µâÕ߉¥â√—∫°“√Õπÿ≠“µ®“°√—∞°àÕπ

(2) ®–µâÕß√“¬ß“π„Àâ√—∞∑√“∫ ‡¡◊ËÕ¡’°“√√–∫“¬πÈ”∑‘Èߥ—ßµàÕ‰ªπ’È

- ¡’·§¥‡¡’ˬ¡‡°‘π 100 µg/l

- ¡’·§¥‡¡’ˬ¡‡°‘π§à“ Ÿß ÿ¥ 5 §√—Èß µ“¡·∫∫øÕ√å¡¢Õß√—∞∑’Ë°”À𥉫â

- ¡’·§¥‡¡’ˬ¡‡°‘π§à“ Ÿß ÿ¥∑’Ë∑“ß EPA (EnvironmentalProtection Agency) µ—È߇ß◊ËÕπ‰¢‰«â

(3) «‘∏’°“√«‘‡§√“–Àå·§¥‡¡’ˬ¡∑’Ë„™â ”À√—∫‡√◊ËÕ߇°’ˬ«°—∫πÈ”∑‘Èß „Àℙ⫑∏’atomic absorption À√◊Õ colorimetry ‚¥¬°“√¬àÕ¬ (digestion) ·§¥‡¡’ˬ¡∑—ÈßÀ¡¥®“°π—Èπ°√Õ߇Փ·§¥‡¡’ˬ¡∑’Ë≈–≈“¬Õ¬Ÿà¥â«¬·ºàπ°√Õß¢π“¥ 0.45 micron

(4) °“√„™â “√‡§¡’„¥Ê ‡¡◊ËÕ¡’°“√ ≈“¬À√◊Õ‡°Á∫√«∫√«¡æ«°πÈ”¡—πÀ√◊Õ “√‡§¡’∑’ËÀ°√¥®–µâÕ߉¥â√—∫§«“¡‡ÀÁπ™Õ∫®“° EPA °àÕπ

(5) °“√√–∫“¬πÈ”∑‘Èß´÷Ëß¡’ª√‘¡“≥·§¥‡¡’ˬ¡«—π≈–‡∑à“°—∫À√◊Õ¡“°°«à“45.4 °‘‚≈°√—¡ ≈ß Ÿà∑–‡≈À√◊Õ∫√‘‡«≥™“¬Ωíòß ®–µâÕß·®âß„Àâ EPA ∑√“∫ ‡æ√“–‡ªìπª√‘¡“≥∑’Ë Ÿß°àÕ„À⇰‘¥§«“¡‡ªìπæ‘…‰¥â

17.2.6 ¡“µ√∞“π·À≈àßπÈ”

ª√‘¡“≥·§¥‡¡’ˬ¡„π·À≈àßπÈ” ∑’Ë·µà≈–ª√–‡∑»°”Àπ¥‰«â · ¥ß‰«â„πµ“√“ß∑’Ë 19

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·§¥‡¡’ˬ¡ (Cadmium) 73

17.2.7 ¡“µ√∞“π§ÿ≥¿“æÕ“°“»„π∫√√¬“°“» (ambient air qualitystandard)

ª√–‡∑»‡™§‚° ‚≈«“‡°’¬ ‰¥â°”Àπ¥§à“¡“µ√∞“π¢Õß·§¥‡¡’ˬ¡„π∫√√¬“°“»‚¥¬‡©≈’ˬ‰¡à‡°‘π«—π≈– 0.003 mg/m3 À√◊Õ„π√Ÿª “√ª√–°Õ∫Õπ‘π∑√’¬å¢Õß·§¥‡¡’ˬ¡‚¥¬‡©≈’ˬ‰¡à‡°‘π 0.01 mg/m3 „π‡«≈“ 30 π“∑’

ª√–‡∑» À¿“æ·Ààß “∏“√≥√—∞‚´‡«’¬µ —ߧ¡π‘¬¡ ‰¥â°”Àπ¥§à“¡“µ√∞“π¢Õß·§¥‡¡’ˬ¡ÕÕ°‰´¥å (cadmium oxide) ‚¥¬‡©≈’ˬ‰¡à‡°‘π«—π≈– 0.001mg/m3 (§”π«≥„π√Ÿª¢Õß Cd)

17.2.8 ¡“µ√∞“πÕ“°“»‡ ’¬ (emission standard)

ª√–‡∑» Àæ—π∏å “∏“√≥√—∞‡¬Õ√¡—π ‰¥â°”Àπ¥§à“¢Õß·§¥‡¡’ˬ¡∑’ˬա„Àâª≈àÕ¬ÕÕ°®“°·À≈àß√–∫“¬Õ“°“»‡ ’¬¥—ßπ’È

(1) ª√‘¡“≥ΩÿÉπ¢Õß·§¥‡¡’ˬ¡·≈–ΩÿÉπ¢Õß “√ª√–°Õ∫Õπ‘π∑√’¬å¢Õß·§¥‡¡’ˬ¡∑’˵°≈ß¡“‚¥¬§”π«≥„π√Ÿª¢Õß·§¥‡¡’ˬ¡‰¡à‡°‘π 5 µg/m2/d ∑—Èßπ’ȇæ◊ËÕªÑÕß°—πº≈°√–∑∫∑’Ë®–‡°‘¥¢÷Èπµ≈Õ¥®π‡Àµÿ‡¥◊Õ¥√âÕπ√”§“≠

(2) ª√‘¡“≥ΩÿÉπ¢Õß·§¥‡¡’ˬ¡·≈–ΩÿÉπ¢Õß “√ª√–°Õ∫Õπ‘π∑√’¬å¢Õß·§¥‡¡’ˬ¡∑’˵°≈ß¡“‚¥¬§”π«≥„π√Ÿª¢Õß·§¥‡¡’ˬ¡‰¡à‡°‘π 0.04 µg/m3 ∑—Èßπ’ȇæ◊ËÕªÑÕß°—πÕ—πµ√“¬∑’Ë®–¡’µàÕ ÿ¢¿“æÕπ“¡—¬

µ“√“ß∑’Ë 19 ¡“µ√∞“π·À≈àßπÈ”¢Õߪ√–‡∑»µà“ßÊ

ª√–‡∑» ª√–‡¿∑·À≈àßπÈ” ª√‘¡“≥·§¥‡¡’ˬ¡

‡™§‚° ‚≈«“‡°’¬ - 0.3

Õπÿ√—°…å‡æ◊ËÕ°“√∫√‘‚¿§ 0.01

°≈ÿࡪ√–™“§¡‡»√…∞°‘® ‡æ◊ËÕ°“√∫√‘‚¿§ 0.005¬ÿ‚√ª

≠’˪ÿÉπ - 0.01

‡¡Á°´‘‚° - ·À≈àßπÈ”‡æ◊ËÕ°“√ª√–ª“·≈– 0.01‡æ◊ËÕ°“√æ—°ºàÕπÀ¬àÕπ„®

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74 “√Õ—πµ√“¬

µ“√“ß∑’Ë 19 (µàÕ)

ª√–‡∑» ª√–‡¿∑·À≈àßπÈ” ª√‘¡“≥·§¥‡¡’ˬ¡

‡¡Á°´‘‚° (µàÕ) - ·À≈àßπÈ”∑’ˇÀ¡“– ¡ ”À√—∫ 0.01°“√„™âª√–‚¬™πå„π°“√æ—°ºàÕπÀ¬àÕπ„® „π°“√Õÿµ “À°√√¡À√◊Õ‡æ◊ËÕ°“√Õπÿ√—°…å —µ«å ·≈–æ◊™πÈ”

- ·À≈àßπÈ”∑’ˇÀ¡“– ¡ ”À√—∫ 0.005°“√„™âª√–‚¬™πå‡æ◊ËÕ°“√‡°…µ√·≈–°“√Õÿµ “À°√√¡

- ∫√‘‡«≥™“¬Ωíòß 0.001

- ∫√‘‡«≥ª“°·¡àπÈ” 0.01

À¿“æ·Ààß “∏“√≥√—∞ - ·À≈àßπÈ”∑—Ë«‰ª 0.001

‚´‡«’¬µ —ߧ¡π‘¬¡ - ·À≈àßπÈ”‡æ◊ËÕ°“√ª√–¡ß 0.005

- πÈ”∑–‡≈ 0.01

(3) ∂⓪√‘¡“≥·§¥‡¡’ˬ¡∑’Ë√–∫“¬ÕÕ°¡“°—∫Õ“°“»‡ ’¬´÷Ëߧ”π«≥‰«â¡’§à“‡°‘π 0.01 kg/h °“√µ‘¥µ—È߇§√◊ËÕß¡◊ÕÕÿª°√≥å ”À√—∫‚√ßß“π„À¡àÀ√◊Õ‡æ‘Ë¡‡µ‘¡®–µâÕ߉¥â√—∫°“√Õπÿ≠“µ°àÕπ

(4) ª√‘¡“≥ΩÿÉπ¢Õß·§¥‡¡’ˬ¡ ª√Õ∑ ·≈–∏“‡√’¬¡ √«¡∑—Èß “√-ª√–°Õ∫Õπ‘π∑√’¬å¢Õß “√‡À≈à“π’È ∑’Ë√–∫“¬ÕÕ°¡“°—∫Õ“°“»‡ ’¬®–µâÕ߉¡à‡°‘π 0.2 mg/m3

·≈–ª√‘¡“≥∑’Ë√–∫“¬ÕÕ°¡“®–µâÕ߉¡à‡°‘π 1 g/h

ª√–‡∑»≠’˪ÿÉπ ‰¥â°”Àπ¥§à“ª√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡∑’ˬա„Àâ√–∫“¬ÕÕ°¡“°—∫Õ“°“»‡ ’¬‰¥â‰¡à‡°‘π 1.0 mg/nm3

17.2.9 ¡“µ√∞“πÕ“À“√

§à“¢Õß·§¥‡¡’ˬ¡∑’ˬա„Àâ¡’‰¥â„πÕ“À“√·µà≈–ª√–‡¿∑∑’ˇ πÕ·π–À√◊Õ°”À𥂥¬ª√–‡∑»µà“ßÊ · ¥ß‰«â„πµ“√“ß∑’Ë 20

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·§¥‡¡’ˬ¡ (Cadmium) 75

17.2.10 ¢âÕ®”°—¥°“√„™â

ª√–‡∑»‡™§‚° ‚≈«“‡°’¬ ‰¥âÀâ“¡¡‘„Àâ¡’°“√„™â·§¥‡¡’ˬ¡ª√–°Õ∫„π‡§√◊ËÕß ”Õ“ß

ª√–‡∑» Àæ—π∏å “∏“√≥√—∞‡¬Õ√¡—π Àâ“¡„™â “√ª√–°Õ∫·§¥‡¡’ˬ¡‡ªìπ “√ÕÕ°ƒ∑∏‘Ï„π “√ªÑÕß°—π°”®—¥»—µ√Ÿæ◊™ ·≈– —µ«å

EEC Àâ“¡„™â·§¥‡¡’ˬ¡‡ªìπ à«πª√–°Õ∫„π‡§√◊ËÕß ”Õ“ß ·≈–Àâ“¡®”Àπà“¬‡§√◊ËÕß ”Õ“ß∑’Ë¡’ à«πª√–°Õ∫¢Õß·§¥‡¡’ˬ¡

ª√–‡∑» «’‡¥π ‰¥â®”°—¥°“√„™â·§¥‡¡’ˬ¡¥—ßπ’È

(1) Àâ“¡„™â·§¥‡¡’ˬ¡À√◊Õ “√ª√–°Õ∫·§¥‡¡’ˬ¡‡ªìπ “√‡§≈◊Õ∫º‘«‡ªìπ “√∑’Ë∑”„À⇠∂’¬√ (stabilizer) À√◊Õ‡ªìπ “√„Àâ ’ (colouring agent)

(2) Àâ“¡π”‡¢â“ ‘π§â“∑’Ë¡’°“√„™â “√·§¥‡¡’ˬ¡¥—ß°≈à“«„π¢âÕ (1)

ª√–‡∑» À√—∞Õ‡¡√‘°“ °“√„™â “√„Àâ ’„𬓷≈–‡§√◊ËÕß ”Õ“ß¡’·§¥‡¡’ˬ¡‰¥â‰¡à‡°‘π 15 mg/kg πÕ°®“°π’È ’∑’Ë„™â„πÕ“À“√ ¬“ À√◊Õ‡§√◊ËÕß ”Õ“ß ·µà≈–™π‘¥®–¡’‚≈À–Àπ—°‰¥â traces-0.03 g/kg (¬°‡«âπµ–°—Ë«·≈– “√ÀπŸ)

µ“√“ß∑’Ë 20 ¡“µ√∞“πÕ“À“√¢Õß·µà≈–ª√–‡∑»

Àπ૬ߓπÀ√◊Õª√–‡∑» ª√–‡¿∑Õ“À“√ §à“¡“µ√∞“π (mg/kg)

CMEA1/ - º≈‘µ¿—≥±å‡π◊ÈÕ —µ«å 0.1-1.0

- º≈‘µ¿—≥±åπ¡ 0.01-0.1

- º≈‘µ¿—≥±åª≈“ 0.05

- ∏—≠æ◊™ ‡™àπ ¢â“« ∂—Ë« 0.01

- º—° 0.03-0.2

0.3 ( ”À√—∫º—°·Àâß)

- º≈‰¡â 0.03-0.05

0.5 ( ”À√—∫º≈‰¡â·Àâß)

- Õ“À“√∑“√° 0.02-0.05

- Õ“À“√Õ◊ËπÊ 0.02-0.5

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76 “√Õ—πµ√“¬

µ“√“ß∑’Ë 20 (µàÕ)

Àπ૬ߓπÀ√◊Õª√–‡∑» ª√–‡¿∑Õ“À“√ §à“¡“µ√∞“π (mg/kg)

CMEA1/ (µàÕ) - ‡§√◊ËÕߥ◊Ë¡ 0.01-0.05

‡™§‚° ‚≈«“‡°’¬ - Õ“À“√∑—Ë«Ê ‰ª 0.02

- ‡§√◊ËÕߥ◊Ë¡ 0.01 mg/l

Àæ—π∏å “∏“√≥√—∞ - æ◊™º—°∑ÿ°™π‘¥ 0

‡¬Õ√¡—π - ‰«πå 0.01 mg/l

À¿“æ·Ààß “∏“√≥√—∞ - º≈‘µ¿—≥±åª≈“ 0.1

‚´‡«’¬µ —ߧ¡π‘¬¡ - º≈‘µ¿—≥±å‡π◊ÈÕ —µ«å 0.05

- º≈‘µ¿—≥±åπ¡ 0.01

- ∏—≠æ◊™ 0.022

- º—° º≈‰¡â 0.03

- ‡§√◊ËÕߥ◊Ë¡ 0.002

À√—∞Õ‡¡√‘°“ - “√‡µ‘¡·µàßÕ“À“√ 0.1

baker yeast protein

1/ CMEA = Council for Mutual Economic Assistance

ª√–‡∑» À√“™Õ“≥“®—°√ Àâ“¡„™â “√ª√–°Õ∫·§¥‡¡’ˬ¡ ‡™àπcadmium chloride À√◊Õ cadmium carbonate ‡ªìπ “√ªÑÕß°—π°”®—¥»—µ√Ÿæ◊™·≈– —µ«å ∑—Èßπ’È ‡π◊ËÕß®“°¡’°“√»÷°…“«‘®—¬«à“ “√ª√–°Õ∫¥—ß°≈à“«Õ“®®–‡ªìπ “√°àÕ‡°‘¥¡–‡√Á߉¥â

17.2.11 ¢âÕ°”À𥇰’ˬ«°—∫°“√°”®—¥¢Õ߇ ’¬

ª√–‡∑» À√—∞Õ‡¡√‘°“ ‰¥â°”Àπ¥«à“„π°“√°”®—¥¢Õ߇ ’¬ (´÷Ë߉¡à„™à¢Õ߇ ’¬®“°∫â“π‡√◊Õπ) ®–µâÕ߉¡à°àÕ„À⇰‘¥°“√ªπ‡ªóôÕπ¢Õß·§¥‡¡’ˬ¡„π·À≈àßπÈ”¥◊Ë¡À√◊ÕπÈ”„µâ¥‘π‡°‘π 0.01 mg/l À√◊Õ‰ª‡æ‘Ë¡ª√‘¡“≥§«“¡‡¢â¡¢âπ„π·À≈àßπÈ”¥—ß°≈à“« ´÷Ë߇¥‘¡¡’§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡‡°‘πÕ¬Ÿà·≈â«

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·§¥‡¡’ˬ¡ (Cadmium) 77

πÕ°®“°π’Ȭ—ß°”Àπ¥«à“ºŸâ∑’ˇªìπ‡®â“¢ÕßÀ√◊Õ¥”‡π‘π°“√‡°’ˬ«°—∫°“√‡°Á∫°“√∫”∫—¥ À√◊Õ°”®—¥¢Õ߇ ’¬ ®–µâÕßµ‘¥µ—Èß√–∫∫°“√µ√«® Õ∫µ‘¥µ“¡º≈·À≈àßπÈ”„µâ¥‘π·≈–√“¬ß“π„Àâ√—∞∑√“∫‡ªìπ√–¬–Ê ∂÷ߪ√‘¡“≥§«“¡‡¢â¡¢âπ¢Õß·§¥‡¡’ˬ¡„π·À≈àßπÈ”π—Èπ

”À√—∫ “√ª√–°Õ∫ªÑÕß°—π°”®—¥»—µ√Ÿæ◊™·≈– —µ«å∑’ˇªìπ “√Õ‘π∑√’¬å ´÷Ëß¡’·§¥‡¡’ˬ¡ª√–°Õ∫Õ¬Ÿà¥â«¬ √«¡∑—Èß¿“™π–∫√√®ÿ¥â«¬ Àâ“¡°”®—¥‚¥¬°“√‡º“°≈“ß·®âß

EEC ‰¥â°”Àπ¥«à“ª√–‡∑» ¡“™‘°µâÕߥ”‡π‘π°“√‡°’ˬ«°—∫¢Õ߇ ’¬®“°°“√Õÿµ “À°√√¡∑’Ë¡’·§¥‡¡’ˬ¡ª√–°Õ∫Õ¬Ÿà §◊Õ

(1) π—∫ πÿπ„Àâ¡’°“√π”¢Õ߇ ’¬¥—ß°≈à“«°≈—∫¡“„™âª√–‚¬™πå„À¡à

(2) °“√°”®—¥¢Õ߇ ’¬¥—ß°≈à“«®–µâÕß·πà„®«à“«‘∏’∑’Ë„™â‰¡à°àÕ„À⇰‘¥Õ—πµ√“¬µàÕ ÿ¢¿“æ·≈– ‘Ëß·«¥≈âÕ¡

(3) Àâ“¡°“√√–∫“¬∑‘ÈߢÕ߇ ’¬‚¥¬¡‘‰¥â¡’°“√§«∫§ÿ¡ √«¡∑—Èß àß„À⺟â∑’ˉ¡à‰¥â√—∫Õπÿ≠“µ„π°“√°”®—¥√—∫‰ª¥”‡π‘π°“√

(4) ·µàßµ—È߇®â“Àπâ“∑’˺Ÿâ¡’Õ”π“®µ“¡°ÆÀ¡“¬‡æ◊ËÕ√—∫º‘¥™Õ∫„π°“√«“ß·ºπ ∫√‘À“√ß“π —Ëß°“√ ·≈–„À⧔ª√÷°…“„π°“√°”®—¥¢Õ߇ ’¬¥—ß°≈à“«

(5) „π°√≥’∑’Ë®”‡ªìπ ®–µâÕß·¬°‡°Á∫¢Õ߇ ’¬¥—ß°≈à“«ÕÕÕ°®“° “√Õ◊ËπÊ æ√âÕ¡∑—Èß¡’©≈“°√–∫ÿ‡°’ˬ«°—∫≈—°…≥–¢ÕߢÕ߇ ’¬ ™π‘¥¢ÕßÕߧåª√–°Õ∫·≈–ª√‘¡“≥·≈– ∂“π∑’Ë∑’Ë®–°”®—¥ ´÷Ë߇®â“Àπâ“∑’˺Ÿâ¡’Õ”π“® “¡“√∂®–«“ß·ºπ®—¥°“√‡°’ˬ«°—∫¢Õ߇ ’¬¥—ß°≈à“«‚¥¬√«¡‰¥â

17.2.12 ¢âÕ°”Àπ¥À√◊Õ¢âÕ∫—ߧ—∫Õ◊ËπÊ

Õߧ尓√Õπ“¡—¬‚≈°·≈–Õߧ尓√Õ“À“√·≈–‡°…µ√·Ààß Àª√–™“™“µ‘(FAO/WHO) ‰¥â·π–π”«à“ª√‘¡“≥·§¥‡¡’ˬ¡∑’Ë√—∫ª√–∑“π‡¢â“‰ªµ‘¥µàÕ°—π∑ÿ° —ª¥“Àå‚¥¬∑’ˬ—߉¡à°àÕ„À⇰‘¥Õ—πµ√“¬µàÕ√à“ß°“¬ (Tolerable Weekly Intake) §◊Õ §π≈–0.4-0.5 mg/week À√◊Õ 6.7-8.3 µg/πÈ”Àπ—°µ—« 1 °‘‚≈°√—¡/ —ª¥“Àå

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78 “√Õ—πµ√“¬

‡Õ° “√ª√–°Õ∫°“√‡√’¬∫‡√’¬ß(Bibliography)

1. °Õß¡“µ√∞“π§ÿ≥¿“æ ‘Ëß·«¥≈âÕ¡, ”π—°ß“π§≥–°√√¡°“√ ‘Ëß·«¥≈âÕ¡·Ààß™“µ‘(2529), √“¬ß“π§ÿ≥¿“æπÈ”·¡àπÈ”·¡à°≈Õß æ.».2527-2528 NEB. PUB. 1986-009

2. °Õß¡“µ√∞“π§ÿ≥¿“æ ‘Ëß·«¥≈âÕ¡, ”π—°ß“π§≥–°√√¡°“√ ‘Ëß·«¥≈âÕ¡·Ààß™“µ‘(2528), √“¬ß“π§ÿ≥¿“æπÈ”·¡àπÈ”‡®â“æ√–¬“ æ.».2526-2527

3. °Õß¡“µ√∞“π§ÿ≥¿“æ ‘Ëß·«¥≈âÕ¡, ”π—°ß“π§≥–°√√¡°“√ ‘Ëß·«¥≈âÕ¡·Ààß™“µ‘(2528), ¡≈æ‘…∑“ßÕ“°“»®“°Õÿµ “À°√√¡ ªï 2526-2527

4. °Õß¡“µ√∞“π§ÿ≥¿“æ ‘Ëß·«¥≈âÕ¡, ”π—°ß“π§≥–°√√¡°“√ ‘Ëß·«¥≈âÕ¡·Ààß™“µ‘(2530), ‚§√ß°“√»÷°…“«‘®—¬§ÿ≥¿“æπÈ”·¡àπÈ” “¬À≈—° (∫“ߪ–°ß), √“¬ß“π¬àÕ¬©∫—∫∑’Ë 2 √“¬ß“π°“√ ”√«®§ÿ≥¿“æπÈ”·¡àπÈ”∫“ߪ–°ß ·¡àπÈ”ª√“®’π∫ÿ√’ ·≈–·¡àπÈ”π§√𓬰 æ.». 2526-2528, NEB.PUB 1987-014

5. ∂“∫—π«‘®—¬ ¿“«–·«¥≈âÕ¡, ®ÿÓ≈ß°√≥å¡À“«‘∑¬“≈—¬, √“¬ß“π°“√ —¡¡π“∑“ß«‘™“°“√ ªí≠À“¡≈¿“«–¢Õß‚≈À–Àπ—°„π ‘Ëß·«¥≈âÕ¡„πª√–‡∑»‰∑¬ 13-15 µÿ≈“§¡2520

6. ÿ™“µ‘ ¡ß§≈æ—π∏ÿå ·≈–§≥– (2522), °“√ ”√«®«‘‡§√“–Àå‡∫◊ÈÕßµâπ∂÷ß∏“µÿæ‘…ª√‘¡“≥πâÕ¬„π¢â“«æ—π∏ÿåµà“ßÊ „πª√–‡∑»‰∑¬ ‚¥¬‡∑§π‘§¢Õßπ‘«µ√Õπ·Õ§µ‘‡«™—Ëπ,æª -91, ”π—°ß“πæ≈—ßß“πª√¡“≥Ÿ‡æ◊ËÕ —πµ‘

7. CEC (1978), Criteria (Dose/Effect Relationships) for Cadmium,Pergaman Press, Great Britain.

8. DUTCH ASSOCIATION OF SAFETY EXPERTS, DUTCH CHEMICALINDUSTRY ASSOCIATION, and DUTCH SAFETY INSTITUTE (1980),Handling Chemicals Safety, Second Edition, The Neterlands,p.257-261

9. EPA (1979), Water-Related Environmental Fate of 129 PriorityPollutants: Volume I, United States Environmental Protection agency,Washington, D.C.,

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·§¥‡¡’ˬ¡ (Cadmium) 79

10. FRIBERG, L. (1976), Cadmium in the Environment, Second Edition,CRC Press, Inc., Ohio

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12. GKNT (1984), Maximum Allowable Concentration and Tentative SafeExposure Levels of Harmful Substances in the Environmental Media,Centre of International Projects, Moscow, USSR

13. HISCOCK, S.A. (1984), Environmental Impact and Controls for lead,Zinc and Cadmium-Industry Experiences and Viewpoints, Industryand Environment, Vol. 7, No. 3, p.15-18

14. IRPTC (1978), Data Profiles for Chemicals for the Evaluation of TheirHazards to the Environment of the Mediterranean Sea, InternationalRegister of Potentially Toxic Chemicals,United Nations EnvironmentProgramme, Geneva, Switzerland, p.267-325

15. IRPTC (1983), Cadmium, IRPTC Bulletin, Vol.6, No.1, InternationalRegister Potentially Toxic Chemicals, United Nations EnvironmentProgramme, p.15-18

16. IRPTC (1983), International Register of Potentially Toxic ChemicalsPart A, United Nations Environment Programme, Geneva Switzerland

17. IRPTC (1985), Treatment and Disposal Methods for Waste Chemicals,United Nations Environment Programme, Geneva, Switzerland,p.118-121

18. IRPTC (1987), IRPTC Legal File 1986: Volume I, International Registerof Potentially Toxic Chemicals, United Nations Environment Programme,Geneva, Switzerland

19. METRIC CO.,LTD (1987), Zinc Refinery Project-Post Construction-EIA Volume I Final Report, Padaeng Industry Company Limited

20. METRIC CO.,LTD (1987), Zinc Refinery Project-Post Construction-EPA: Volume II Annex, Padaeng Industry Company Limited

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80 “√Õ—πµ√“¬

21. ONEB (1986), Laws and Standards on Pollution Control in Thailand,Environmental Quality Standards Division, Office of the NationalEnvironment Board, Thailand.

22. PATTY, F.A. (1962), Industrial Hygiene and Toxicology: Volume II,Second Revised Edition, Interscience Publishers, p.1,011-1,016

23. SAX,N.I. (1979), Dangerous Properties of Industrial Materials, FifthEdition, Van Nostrand Reinhold Company

24. WHO (1972), Health Hazards of the Human Environment, WorldHealth Organization, Geneva, p.33, 61, 80 and 176-177


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