JURNAL SSA-Determination of Selenium by Electrothermal Atomic Absorption Spectrometry.ppt

8/19/2019 JURNAL SSA-Determination of Selenium by Electrothermal Atomic Absorption Spectrometry.ppt

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JURNALSPEKTROFOTOMETRI

SERAPAN ATOM

FEBRINA AMELIA SAPUTRI

260120120029

PENGAWASAN MUTU


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Determinti!n !" Se#eni$m in

%$mn B#!!& Ser$m '(E#e)tr!t*erm# At!mi) A'+!r,ti!n

S,e)tr!metr(-*emi)# S)ien)e+ J!$rn#. /!# 2011 -SJ36

F 4$,ri5!. T St"i#!7

In+tit$te !" -*emi+tr(. F)$#t( !" S)ien)e. St+ -(ri#n& Met*!&i$+ Unier+it(. POB 162.1000 S8!,e. M)e&!ni


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A'+tr)t

A met*!& "!r &ire)t +e#eni$m &eterminti!n in *$mn '#!!&+er$m '( e#e)tr!t*erm# t!mi) '+!r,ti!n +,e)tr!metr(:ETAAS;


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Intr!&$)ti!n

Se#eni$m i+ n e++enti# mi)r!n$trient t #!<)!n)entrti!n '$t t!>i) t *i5* )!n)entrti!ni&+e. i&tie met'!#i+m


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Se#eni$m i+ t8in5 )enter +t5e + ,!tenti#

nti)n)er 5ent '( ,r!m!tin5 "!rmti!n !"


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De"i)ien)( !" t*e e#ement )n )$+e Ke+*n&i+e+e. )*r)teri?e& '( n en#r5e& *ert n&,!!r *ert "$n)ti!n !r t! 'e ")t!r "!r e++enti#*(,erten+i!n T*i+ &i+!r&er i+ en&emi) in +!me !"m!+t +e#eni$m,!!r +!i#+ in t*e

%i5* '#!!& #ee#+ !" +e#eni$m )n re+$#t in+e#en!+i+.


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T*e tr)e e#ement+ )!n)entrti!n in'#!!&. +er$m. $rine n& ti++$e i+ $+e& +n in&i)t!r !" t*e tr)e e#ement+ +tt$+ !"

t*e *$mn '!&( Nme#(. &eterminti!n !" met#+ in i! in

!r5n+ i+ n!t ,!++i'#e t*ere"!re in&ire)t

&eterminti!n !" met#+ in ))e++i'#eti++$e )n ,!int t t*e ,re+en)e !" t!>i)e#ement+


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Be)$+e !" t*t. it i+ er( im,!rtnt t! intr!&$)e

))$rte n& ,re)i+e met*!&+ "!r tr)e met#&eterminti!n :n& t*eir )*emi)# "!rm+. +


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Dire)t e#e)tr!t*erm# t!mi) '+!r,ti!n+,e)tr!metr( :ETAAS; +*!


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T*e ,$r,!+e !" t*i+ +t$&(


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Met*!&

Instrumentation

A /rin S,e)trAA 630@ @eemne#e)tr!t*erm# t!mi) '+!r,ti!n+,e)tr!meter e$i,,e&


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Re5ent+ n& Sm,#e+

A## re5ent+ n& +tn&r&+

&i#$ti!n :10 5 L1; P&:NO;2 :Mer)8. Drm+t&t.Germn(;. n& iri&i$m AA +tn&r& +!#$ti!n. 1000 5 mL1in 20 %-# :A#"J!*n+!n Mt*e(;. 01 V/V nitric acid prepared by dilution trace pure 65 % nitric acid (Merck,

Darmstadt, Germn(;. n& 01 Trit!n 100 :Mer)8.Drm+t&t. Germn(;


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T*e "!##!


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Ser$m +m,#e+ ,eriment+


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Pr!)e&$re+

B#!!& +er$m +m,#e+ :00 L; m!&i"ier


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Re+$#t+ n& Di+)$++i!n

A. Selection of chemical modifier Seer# ,re#iminr( e>,eriment+

miner#i?ti!n n& rem!# &$rin5 t*e +*in5 +te, T*e mtri> m!&i"ier+ $+e& in t*i+


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Di""erent m++e+ !" m!&i"ier+


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B. GFAAS program optimization

O,timi?ti!n !" tem,ert$re ,r!5rm "!r Se&eterminti!n '( e#e)tr!t*erm# t!mi) '+!r,ti!n+,e)tr!metr( in *$mn '#!!& +er$m +m,#e+


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T*e m!&i"ier+


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E""e)t+ !" ,(r!#(+i+ n& t!mi?ti!n tem,ert$re+ n&time+ !n inte5rte& '+!r'n)e "!r +er$m +m,#e+


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T*e 'e*i!r !" P& n& Ir "!r t*erm# +t'i#i?ti!n!" +e#eni$m ,r!e& i&enti)#

B!t* m!&i"ier+ en+$re& #!++"ree +*in5 $, t!1100 !- i+ +er$m +m,#e+ &i#$te&


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C. Calibration

In !r&er t! e#$te& t*e &e5ree !" mtri>&e,re++i!n !n t!mi?ti!n !" +e#eni$m. +eer#+er$m +m,#e+


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Mtri> inter"eren)e+


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Ei&ent#(. t*e met*!& !" +tn&r& &&iti!n +*!$#& 'e $+e& "!r)#i'rti!n n& ,re#iminr( +tn&r& &&iti!n +*!$#& 'e,re,re& '( &&in5 Se +tn&r& t! t*e +er$m +m,#e+

T*e $t!+m,#er ")i#itie+ t! ,re,re +tn&r& &&iti!n++*!$#& n!t 'e $+e& "!r +tn&r& &&iti!n ,re,rti!n

It i+ 8n! )!m,!nent+ )!ntent+ in +er$m !"&i""erent ,er+!n+ +#i5*t#( rie& n& it mi5*t 'e e>,e)te& &ier+e &e5ree !" &e,re++i!n !n Se &eterminti!n


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E An#(ti)# A,,#i)ti!n

T*e met*!&


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T*e re+$#t+ !'tine& ree#e& t*t t*e +e#eni$m)!ntent rie& in t*e rn5e !" 122 t! 902 =5 L1

N! +i5ni"i)nt &i""eren)e *+ 'een ree#e& 'et O$r &t ree# t*t +er$m +e#eni$m #ee#+ !"*e#t*( ,e!,#e in M)e&!ni re m!n5 t*e #!


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-!n)#$+i!n

T*e met*!& "!r t!t# +e#eni$m &eterminti!n in *$mn '#!!& +er$m'( ETAAS


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T%ANK XOU

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JURNAL SSA-Determination of Selenium by Electrothermal Atomic Absorption Spectrometry.ppt

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