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polychlorinated biphenyl
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polychlorinated biphenyl

Any of a group of chlorinated isomers of biphenyl (C6H5)2. They are dangerous industrial chemicals, valuable for their fire-resistant qualities. They constitute an environmental hazard because of their persistent toxicity. Since 1973 their use had been limited by international agreement. In December 2000, 122 nations agreed a treaty to ban the toxic chemicals known as persistent organic polluters (POPs), which include PCBs, although they are unlikely to be totally eliminated until about 2025.



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? Mentioned in ? References in periodicals archive
 
A new reference material (RM), RM 8504, has been prepared for use as a diluent oil with Aroclors in transformer oil Standard Reference Materials (SRMs) 3075 to 3080 and SRM 3090 when developing and validating methods for the determination of polychlorinated biphenyls (PCBs) as Aroclors in transformer oil or similar matrices.
Preparation of reference material 8504, transformer oil by Wise, Stephen A. / Journal of Research of the National Institute of Standards and Technology
Comparative carcinogenicity in Sprague-Dawley rats of the polychlorinated biphenyl mixtures Aroclors 1016, 1242, 1254, and 1260.
Long-term effects of neonatal exposure to hydroxylated ... by Jones, Lovell A. / Environmental Health Perspectives
Common examples are Aroclors 1242, 1248, and 1254, which contain 42, 48, and 54% chlorine by weight, respectively.
An approach to evaluation of the effect of bioremediation on ... by Boyd, Steven A. / Environmental Health Perspectives
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