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ENCYCLOPEDIA OF ENVIRONMENTAL SCIENCE AND ENGINEERING - PCBs AND ASSOCIATED AROMATICS

Chia sẻ: Nguyen Nhi | Ngày: | Loại File: PDF | Số trang:111

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Polychlorinated biphenyls (PCBs) are a family of chemical compounds which do not exist in nature but which are manmade. Commercial mixtures are clear, pale yellow liquids manufactured by the replacement of hydrogen atoms on the biphenyl molecule by chlorine. The reaction is controlled according to the percentage replacement of hydrogen and results in a product which contain chlorobiphenyls with one or, more usually, several chlorine atoms attached to each molecule.

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Nội dung Text: ENCYCLOPEDIA OF ENVIRONMENTAL SCIENCE AND ENGINEERING - PCBs AND ASSOCIATED AROMATICS

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