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Partial pressures of PCB-11 in air from several Great Lakes sites

Environmental Science and Technology, ISSN: 0013-936X, Vol: 43, Issue: 17, Page: 6488-6492
2009
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Article Description

Relatively high concentrations of 3,3′-dichlorobiphenyl (PCB-11) havebeenreported in waterandair,andit hasbeensuggested that this compound did not come from commercial PCB products. We report here data on atmospheric partial pressures of PCB-11 and of total PCBs at five sites around the Great Lakes and demonstrate that both total PCBs and PCB-11 track human population density. In addition, we show that, with the exception of Chicago, the PCB congener pattern at our sampling sites is best represented by Aroclor 1242; in Chicago, the pattern is best represented by a 1:1 mixture of Aroclors 1242 and 1254. With the possible exception of Sturgeon Point, New York, the levels of PCB-11 in air have not changed between January 2004 and December 2007. The source of PCB-11 may be related to yellow pigments, to the degradation of more highly chlorinated PCB congeners, or to both. © 2009 American Chemical Society.

Bibliographic Details

Basu, Ilora; Arnold, Karen A; Venier, Marta; Hites, Ronald A

American Chemical Society (ACS)

Chemistry; Environmental Science

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