Mercury
Mercury
Mercury
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The atmosphere is purified of PCBs through<br />
rainwater flush and dry or wet precipitation, the<br />
process of which transports the pollutants from<br />
atmosphere to water or soil.<br />
Hydrophobic organic matters in the atmosphere<br />
are mainly in gaseous state or absorpt state. PCBs in<br />
the gaseous state and PCBs absorpt by particulate<br />
matters can reach the earth’s surface through dry or<br />
wet precipitation such as gas phase absorption,<br />
gravitational settling and eddy diffusion, etc.