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PCBs in the Housatonic River: determination and distribution

Journal Article · · J. Environ. Qual.; (United States)
An understanding of the mechanisms for the transport of polychlorinated biphenyls (PCBs) as well as their reactions with sediments should help in developing strategies for removal and disposal of sediments in contaminated rivers. We have developed a convenient procedure, based on multiple linear regression of peak heights (or areas) from gas chromatograms, for estimating individual members (Aroclors) for the PCB group of chemicals. Analysis of the bottom sediments of the Housatonic River system along a 20-km section revealed that the sediments contained Aroclors 1248, 1254, and 1260 in the ratio of 1.0:0.6:1.9. PCB concentrations were highly correlated with clay and organic matter, suggesting that fine particles consisting of clay-organo complexes in the sediments may provide a primary means of retention and transport of PCBs. Laboratory sorption of PCBs by clay minerals, humic acid, and the river sediments further substantiate these conclusions.
Research Organization:
Connecticut Agriculture Experimental Station, New Haven
OSTI ID:
5929207
Journal Information:
J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 10:4; ISSN JEVQA
Country of Publication:
United States
Language:
English