Mercury
Mercury
Mercury
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<strong>Mercury</strong> (Hg)<br />
1. Source and Distribution of <strong>Mercury</strong><br />
in the Environment<br />
• Abundance ratio :63 rd in the Earth’s Crust,80<br />
mg/kg; 40 th in the Ocean,0.15 mg/L<br />
• Forms:nonvalent mercury、univalent mercury、<br />
bivalent mercury<br />
• Distribution:low concentration、broad<br />
distribution;all kinds of rocks;absorption<br />
medium;animals and plants<br />
• Source of pollution:waste water containing<br />
mercury、waste gas and waste residue-from<br />
factories using or producing mercury or mercuric<br />
compounds.
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