| polychlorinated biphenyls |
Mixtures of chlorinated biphenyls with different degrees of chlorination. They are quite insoluble in water and adhere readily and strongly to sediments, soils, and fatty tissue. Because they are nonflammable and have useful heat exchange and electrical insulation properties, they have been used extensively in the electrical industry in capacitors and transformers. They were also used in lubricating and cutting oil formulations as well as in pesticide formulations. ...
출처: www.rmsc.org/communitylearning/partners/wec/glossa...
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| polychlorinated biphenyls |
A group of synthetic polychlorinated aromatic hydrocarbons formerly used for such purposes as insulation in transformers and capacitors and lubrication in gas pipeline systems. Production, sale, and new use was banned by law in 1977 following passage of the Toxic Substances Control Act. PCBs have a strong tendency to bioaccumulate. They are quite stable, and therefore persist in the environment for long periods of time. They are classified by USEPA as probable human carcinogens.
출처: library.marist.edu/diglib/EnvSci/archives/hudsmgmt...
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| polychlorinated biphenyl |
A man-made chemical produced by adding chlorine atoms to biphenyl rings. There are 209 types of PCB compounds (congeners) described by the general formula C 12 H x Cl y where x=0 to 9 and y=10 - x. Westinghouse Corporation filled electrical capacitors with PCB formulations manufactured by Monsanto under the trade name Aroclor. (abbrev. PCB)
출처: www.copa.org/library/glossary/p.htm
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| polychlorinated biphenyls |
A group of biologically persistent organic compounds containing chlorine, previously used in electrical transformers and capacitors because of their insulating capacity and fire resistance. Due to their persistence, they are being phased out and destroyed.
출처: www.hydroonenetworks.com/en/community/education/gl...
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| polychlorinated biphenyls |
A group of toxic chemicals. These are used for industrial products such as fluorescent lights and electrical transformers. They are very poisonous. They are not easily biodegradable and can remain in our environment for hundreds of years.
출처: www.lalc.k12.ca.us/target/units/recycle/activities...
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