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1 полихлорированный бифенил
полихлорированный бифенил
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
polychlorinated biphenyl
PCBs are a family of chemical compounds which do not exist in nature but which are man-made. Commercial mixtures are clear, pale yellow liquids, manufactured by the replacement of hydrogen atoms on the biphenyl molecule by chlorine. Because of their physical properties, PCBs are commonly found in electrical equipment which requires dielectric fluid such as power transformers and capacitors, as well as in hydraulic machinery, vacuum pumps, compressors and heat-exchanger fluids. Other uses include: lubricants, fluorescent light ballasts, paints, glues, waxes, carbonless copy paper, inks including newspapers, dust-control agents for dirt roads, solvents for spreading insecticides, cutting oils. PCBs are stable compounds and although they are no longer manufactured they are extremely persistent and remain in huge quantities in the atmosphere and in landfill sites. They are not water-soluble and float on the surface of water where they are eaten by aquatic animals and so enter the food chain. PCBs are fat-soluble, and are therefore easy to take into the system, but difficult to excrete. (Source: PZ / PHC)
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Русско-французский словарь нормативно-технической терминологии > полихлорированный бифенил
См. также в других словарях:
Polychlorbiphenyl — Allgemeine Strukturformel der polychlorierten Biphenyle Polychlorierte Biphenyle (PCB) sind giftige und krebsauslösende chemische Chlorverbindungen, die bis in die 1980er Jahre vor allem in Transformatoren, elektrischen Kondensatoren, in… … Deutsch Wikipedia
PCB — [Abk. für polychloriertes Biphenyl oder Polychlorbiphenyl]: Gruppenbez. für im Allg. als Gemische vorliegende Chlorierungsprodukte des Biphenyls, die 1–10 Chlor Atome (Massenanteil ca. 19–71 %) enthalten können. Die PCB sind farblose, giftige,… … Universal-Lexikon
полихлорированный бифенил — — [http://www.eionet.europa.eu/gemet/alphabetic?langcode=en] EN polychlorinated biphenyl PCBs are a family of chemical compounds which do not exist in nature but which are man made. Commercial mixtures are clear, pale yellow liquids,… … Справочник технического переводчика