Springer Online Journal Archives 1860-2000
Energy, Environment Protection, Nuclear Power Engineering
Abstract The concentrations and high resolution gas Chromatographic profiles of DDT metabolites and polychlorobiphenyl (PCB) congeners were determined in blubber, liver, kidney and lung tissue and milk samples of stranded beluga whales (Delphinapterus leucas) collected at localities along the coasts of the Saint Lawrence Estuary, Canada from November 1983 through December 1984. The analyses indicate that the major PCB components of the tissues were 2,2′,5,5′-tétra-, 2,2′,4,4′,5-penta-, 2,2′,3,4,4′,5′-hexa-, 2,2′,4,4′,5,5′-hexa-, 2, 2′,3,3′,4,5-hexa-, 2,3,3′,5,5′,6-hexa-, 2,2′,3,4, 5,5′,6-hepta- and 2,2′,3,4,4′,5,5′-heptachlorobiphenyls. Although the highest organochlorine chemical concentrations were found primarily in the blubber, concentrations of 1.72 Μg/g for PCB and 2.04 Μg/g for ⌆DDT were determined in one milk sample. No correlation was established between PCB,p,p-DDE and ⌆DDT concentrations and the fat content of the kidney liver and lung tissues. The Chromatographie patterns of the PCB congeners were similar from one tissue to another with the exception of the kidney; the profile indicates the retention of PCB congeners which are minor components in the other tissues. Relations of residue concentrations between tissue are described and the significance of congener-specific PCB analysis is discussed in terms of the structureactivity effects on PCB persistence and toxicity.
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