| polychlorinated biphenyls |
A series of hazardous compounds used for a number of industrial purposes. PCBs are toxic to some marine life at concentrations of a few parts per billion and are known to cause skin diseases and even death in humans at higher concentrations. PCBs are persistent in the environment and do not decompose easily. ...
출처: www.lehigh.edu/~kaf3/books/reporting/glossary.html
|
|---|---|
| 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...
|
| 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...
|
| 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
|
| 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...
|