Record Display for the EPA National Library Catalog

RECORD NUMBER: 68 OF 395

OLS Field Name OLS Field Data
Main Title Determination and Occurrence of AHH-Active Polychlorinated Biphenyls, 2,3,7,8-Tetrachloro-p-Dioxin and 2,3,7,8-Tetrachlorodibenzofuran in Lake Michigan Sediment and Biota. The Question of Their Relative Toxicological Significance.
Author Smith, L. M. ; Schwartz, T. R. ; Feltz, K. ; Kubiak, T. J. ;
CORP Author Environmental Research Lab.-Narragansett, Newport, OR. Mark O. Hatfield Marine Science Center. ;National Fisheries Contaminant Research Center, Columbia, MO.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/546 ;ERLN-N095;
Stock Number PB92-108125
Additional Subjects Water pollution detection ; Lake Michigan ; Sediments ; Polychlorinated biphenyls ; Water pollution effects ; Biota ; Chemical analysis ; Toxicology ; Aquatic ecosystems ; Aquatic biology ; Chlorine organic compounds ; Aroclors ; Food chain ; Polychlorinated dibenzodioxins ; Polychlorinated dibenzofurans ; Extraction ; Distillation ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB92-108125 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 02/24/1992
Collation 25p
Abstract
An analytical procedure has been developed for the determination of the 18 PCB congeners which are inducers of methylcholanthrene-like mixed function oxidase activity in animals and include the most toxic PCBs. Determinations of the toxic PCB congeners in samples of eggs of predatory fish and piscivorous birds of the Great Lakes and in Aroclor mixtures demonstrate that the apparent toxic potency of PCB residues in these samples is dominated by two congeners, 3,3',4,4',5- and 2,3,3',4,4'-pentachlorobiphenyl. Furthermore, the analyses demonstrate that the potential toxicity of PCB residues can increase 5 to 10 fold as they reach upper levels of aquatic food chains and most often exceed the potential toxicity of chlorinated dibenzodioxins and furans in higher animals even in environments highly contaminated by the latter compounds.