S.5D Ng Hoi Yi S.5D Ng Hoi Yi (12)(12)

Pang Sze Yan (15)Pang Sze Yan (15)

Tong Hoi Yi (22)Tong Hoi Yi (22)

Industrial use

Medical use

Biological Use

1) An anti-corrosion agent (most commonly)

Galvanization(55%)Used on … ... chain-link fencing guard rails suspension bridges lightposts metal roofs heat exchangers Hot-dip handrail galvanized crystalline surface

car bodies

Industrial Use

2) An efficient sacrificial anode in cathodic protection

Acts as the anode

Protect metals that are exposed to sea water from corrosion

iron T-Bolt without/with cathodic protection

Industrial Use

3) Alloy (Brass)

More ductile and stronger

Superior corrosion resistance

Useful in … … communication equipment hardware musical instruments water valves Cast brass

microstructure at magnification 400x

Industrial Use

4) Zinc-air batteries

Electro-chemical batteries

High energy densities

Relatively inexpensive

to produce

Useful in … … electric vehicle propulsion Zinc -air button cell

film camera

Industrial Use

1) Dietary supplement

Single tablet over-the-counter daily vitamin

& mineral supplements

Protect against … …

accelerated aging of the skin

muscles of the body

Speed up the healing process

Medical Use

2) Cure diseases

Effective treatment for … …

Age-related macular degeneration ( 老年黃斑點病變 )

Acrodermatitis enteropathica

Protect against … …

Diaper rash ( 尿布疹 ) Sunburn & Windburn

Medical Use

1) Enzyme

A useful catalytic agent

Necessary for … ... plants animals microorganisms

Coordinate to the amino acid side chains of … … aspartic acid glutamic acid cysteine and histidine.

Biological Use

2) In human body

2–4 grams distributing throughout the human body brain muscle bones kidney liver prostate parts of the eye.

Biological Use