Determination of Polychlorinated Biphenyls by Dechlorination
نویسندگان
چکیده
منابع مشابه
Biodegradation of Polychlorinated Biphenyls by and Isolated from Contaminated Soil
Polychlorinated biphenyls (PCBs) cause many significant ecological problems because of their low degradability, high harmfulness, and solid bioaccumulation.Two bacterial strains were isolated from soil that had been polluted with electrical transformer liquid for more than 40 years. The isolates were distinguished as Lysinibacillus macrolides DSM54Tand Bacillus firmus NBRC1530...
متن کاملReductive dechlorination of low concentration polychlorinated biphenyls as affected by a rhamnolipid biosurfactant.
We investigated whether the threshold concentration for polychlorinated biphenyl (PCB) dechlorination may be lower in biosurfactant-amended sediments compared with biosurfactant-free samples. At PCB concentrations of 40, 60, and 120 ppm, the surfactant amendment enhanced the PCB dechlorination rate at all concentrations and the rate was also faster at higher concentrations. On a congener group ...
متن کاملPolychlorinated Biphenyls
Polychlorinated biphenyls (PCBs) are industrial compounds with multiple industrial and commercial uses (Table 41.1). PCBs are chemically inert and stable when heated. These properties contribute greatly to PCBs having become environmental contaminants. The chemical inertness and heat stability properties that make PCBs desirable for industry also protect them from destruction when the products ...
متن کاملThe absence and application of stable carbon isotopic fractionation during the reductive dechlorination of polychlorinated biphenyls.
A bacterial enrichment culture (specific to doubly flanked chlorine removal) reductively dechlorinated 2,3,4,5-tetrachlorobiphenyl (2,3,4,5-CB) to 2,3,5-trichlorobiphenyl (2,3,5-CB) in aqueous media. Approximately 90% conversion to 2,3,5-CB occurred after 90 days, with no other products formed. The delta13C values of 2,3,4,5-CB and 2,3,5-CB were relatively constant over the course of the reacti...
متن کاملNovel catalysts for dechlorination of polychlorinated biphenyls (PCBs) and other chlorinated aromatics.
Diiron complexes of fluorene and fluorene* (1,2,3,4,5,6,7,8,9-nonamethylfluorene) have been found to be catalysts for the dechlorination of chlorinated aromatics, such as PCBs.
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ژورنال
عنوان ژورنال: Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi)
سال: 1973
ISSN: 0015-6426,1882-1006
DOI: 10.3358/shokueishi.14.18