Record Display for the EPA National Library Catalog


Main Title Residues of PCB's and DDT in the Western Lake Superior Ecosystem.
Author Veith, G. D. ; Kuehl, D. W. ; Puglisi, F. A. ; Glass, G. E. ; Eaton., J. G. ;
CORP Author Environmental Research Lab.-Duluth, Minn.
Year Published 1977
Report Number EPA/600/J-77/045;
Stock Number PB-272 447
Additional Subjects Pesticides ; Fishes ; Lake Superior ; DDT ; Residues ; Biphenyls ; Chlorine organic compounds ; Trout ; Concentration(Composition) ; Size determination ; Chlorodan ; Naphthalene compounds ; Benzene ; Dieldrin ; Chlorohydrocarbons ; Halohydrocarbons ; Tolerances(Physiology) ; Polychlorinated biphenyls ; Biphenyl/chloro ; Benzene/hexachloro ; Nonaclor
Library Call Number Additional Info Location Last
NTIS  PB-272 447 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p
Fish from western Lake Superior (1972-73) contained DDT and PCB residues at concentrations greater than 0.1 ppm. The most predominant PCB's were those containing 3 to 6 chlorine atoms per molecule, and GLC data indicated that the mixtures were most like the commercial product Aroclor (R). Other chlorinated contaminants identified by GC/MS analyses and occurring at concentrations less than 0.1 ppm were hexachlorobenzene (C6C16), chlordane, nonaclor, and dieldrin. Lindane which has been previously reported in Lake Superior, was below the detection limit of approximately 0.01 ppm. The relationship between the size of lake trout and the concentration of total DDT in the fish was compared to measurements reported in previous studies. The comparison suggests that DDT residues have declined since 1968.