Polychlorinated dibenzofurans and polychlorinated dibenzo-p-dioxins in great lakes fish: A baseline and interlake comparison

Autor: William J. Dunn, Per-Anders Bergqvist, Christoffer Rappe, Karin Wiberg, David S. De Vault
Rok vydání: 1989
Předmět:
Zdroj: Environmental Toxicology and Chemistry. 8:1013-1022
ISSN: 1552-8618
0730-7268
DOI: 10.1002/etc.5620081107
Popis: Fish from each of the Great Lakes and Lake St. Clair were analyzed for 10 congeners of polychlorinated dibenzofurans (PCDFs) and 8 congeners of polychlorinated dibenzo-p-dioxins (PCDDs). PCDFs and PCDDs were identified above detection limits in samples from each lake. Concentrations of PCDFs, principally 2,3,7,8-TCDF, were highest (102.4 ng/kg) in Lake Michigan lake trout and lowest in late trout from Lake Superior (20.9 ng/kg). Total PCDD concentrations ranged from 7.2 ng/kg in Lake Superior lake trout in 64.5 ng/kg in Lake Ontario lake trout. Concentrations of 2,3,7,8-TCDD ranged from 1.0 ng/kg in Lake Superior lake trout to 48.9 ng/kg in lake trout from Lake Ontario. While the upper lakes were somewhat similar in the absolute concentration and composition of PCDFs and PCDDs, principle components analysis identified statistically significant inter- and in-tralake differences in the composition of total PCDF and total PCDD. These differences suggest differences in the sources of these compounds to each of the Great Lakes.
Databáze: OpenAIRE
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