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Main Title Contaminant Trends in Lake Trout ('Salvelinus namaycush') of the Upper Great Lakes.
Author DeVault, D. S. ; Willford, W. A. ; Hesselberg, R. J. ;
CORP Author Fish and Wildlife Service, Ann Arbor, MI. Great Lakes Fishery Lab.
Year Published 1985
Report Number EPA/905/3-85/001; GLFL-639;
Stock Number PB86-121217
Additional Subjects Pesticides ; Trout ; Toxicity ; Water pollution ; Great Lakes ; Lipids ; Concentration(Composition) ; Chlorine organic compounds ; Aromatic compounds ; Dieldrin ; Biphenyl ; Chlorohydrocarbons ; Salvelinus namaycush ; Lake trout ; DDT insecticide ; Polychlorinated biphenyls ; Biphenyl/chloro
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB86-121217 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 30 p.
Abstract Contaminant body burdens in lake trout from the Upper Great Lakes have been monitored since 1970 on Lake Michigan and since 1977 and 1978 on Lakes Superior and Huron. Analysis of the Lake Michigan data shows that mean PCB concentrations declined from maximum of 22.91 mg/kg in 1974 to 5.63 in 1982. Mean total DDT concentrations declined from 19.19 mg/kg in 1970 to 2.74 mg/kg in 1982. The decline in both contaminants closely followed first order loss kinetics. If the current declines continue, PCB concentrations will decline to the USFDA tolerance of 2.0 mg/kg in 1988. As this decline is not reflected in other species it will require additional years of monitoring to determine if the decline in dieldrin concentrations between 1979 and 1982 truly represents a declining trend.
Notes "March 1985"
Supplementary Notes Sponsored by Environmental Protection Agency, Chicago, IL. Great Lakes National Program Office.
Corporate Au Added Ent U. S. Environmental Protection Agency, Great Lakes National Program Office, Chicago, IL.
NTIS Title Notes Rept. for 1977-82.
PUB Date Free Form Apr 85
Category Codes 6C; 6T; 6F; 68E; 98F; 57Y; 57P
NTIS Prices PC A03/MF A01
Primary Description 905/00
Document Type NT
Cataloging Source NTIS/MT
Control Number 603116770
Origin NTIS
Type CAT