(Table 1) Concentrations of the main organochlorine pesticides in liver and plasma samples of ringed seals (Phoca hispida)

The present study investigates the concentrations and patterns of organochlorine pesticides (OCPs) and their metabolites in liver and plasma of two ringed seal populations (Phoca hispida): lower contaminated Svalbard population and more contaminated Baltic Sea population. Among OCPs, p,p'-DDE and sum-chlordanes were the highest in concentration. With increasing hepatic contaminant concentrations and activities of xenobiotic-metabolizing enzymes, the concentrations of 3-methylsulfonyl-p,p'-DDE and the concentration ratios of pentachlorophenol/hexachlorobenzene increased, and the toxaphene pattern shifted more towards persistent Parlar-26 and -50 and less towards more biodegradable Parlar-44. Relative concentrations of the chlordane metabolites, oxychlordane and -heptachlorepoxide, to sum-chlordanes were higher in the seals from Svalbard compared to the seals from the Baltic, while the trend was opposite for cis- and trans-nonachlor. The observed differences in the OCP patterns in the seals from the two populations are probably related to the catalytic activity of xenobiotic-metabolizing enzymes, and also to differences in dietary exposure.

New innovative pesticides : an evaluation of incentives and disincentives for commercial development by industry /

Mode of access: Internet.

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"100-78."

Evaluation of hose-end sprayers used for applying liquid pesticides /

Mode of access: Internet.

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Mode of access: Internet.

Damping energy dissipation at support interfaces of square plates

"Materials Laboratory, Contract no. AF33(616)-5426, Project no. 7360."

Experimental investigation of a method of predicting heat dissipation and temperature of plain journal bearings,

"Contract No. NAw-6443."

Annotated bibliography on the effects of irrigation practices on stream water quality with emphasis on salinity and pesticides /

Mode of access: Internet.

Dynamic modeling and monitoring of water, sediment, nutrients, and pesticides in agricultural watersheds during storm events /

"Contract report 655"--Cover.

Pesticides and pest management : proceedings of the 16th ENR annual conference, November 12 and 13, 1987 /

Sponsored by: Illinois Department of Energy and Natural Resources.

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"Contract: EH 10."

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Goldsmiths'-Kress no. 29122.