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Concentrations, patterns and metabolites of organochlorine pesticides in relation to xenobiotic phase I and II enzyme activities in ringed seals (Phoca hispida) from Svalbard and the Baltic Sea
Örebro University, School of Science and Technology.ORCID iD: 0000-0001-6217-8857
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2009 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 157, no 8-9, p. 2428-2434Article in journal (Refereed) Published
Abstract [en]

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. (c) 2009 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2009. Vol. 157, no 8-9, p. 2428-2434
Keywords [en]
Organochlorine pesticide, Biotransformation, Ringed seal, Baltic Sea, Svalbard
National Category
Chemical Sciences
Research subject
Chemistry
Identifiers
URN: urn:nbn:se:oru:diva-13281DOI: 10.1016/j.envpol.2009.03.008ISI: 000267586200031OAI: oai:DiVA.org:oru-13281DiVA, id: diva2:388135
Available from: 2011-01-17 Created: 2011-01-11 Last updated: 2017-12-11Bibliographically approved

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van Bavel, Bert

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  • apa
  • harvard1
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More styles
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