Document Detail


Congener-specific accumulation and food chain transfer of polybrominated diphenyl ethers in two arctic food chains.
MedLine Citation:
PMID:  15074673     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Congener-specific accumulation and prey to predator transfer of 22 polybrominated diphenyl ethers (PBDEs) were assessed in polar cod, ringed seal, polar bear, and beluga whale. Although the concentrations found were relatively low, these results show that PBDEs have reached the Arctic. PBDE congeners 47, 99, and 100 were dominant in all species studied. The pattern in ringed seal was somewhat simpler than in polar cod, with PBDE 47 accounting for more than 90% of the total PBDEs. In contrast, beluga whales, feeding on prey similar to that of ringed seals, showed higher PBDE levels and a more complex PBDE pattern than ringed seals. In contrast, polar bears contained only PBDE 47 in relatively small amounts. These differences in levels and patterns are likely due to species-specific differences in PBDE metabolism and accumulation. The metabolic index suggested that PBDEs 47 and 99 accumulate to the same magnitude as PCB 153 (PCB = polychlorinated biphenyl) in ringed seals and beluga whales. In contrast to beluga whales, ringed seals can metabolize PBDE 100 to some extent. Polar bears are seemingly capable of metabolizing virtually all PBDEs and are therefore unsuitable as indicators for PBDE contamination in the environment.
Authors:
Hans Wolkers; Bert van Bavel; Andrew E Derocher; Oystein Wiig; Kit M Kovacs; Christian Lydersen; Gunilla Lindström
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Environmental science & technology     Volume:  38     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2004 Mar 
Date Detail:
Created Date:  2004-04-12     Completed Date:  2004-05-03     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1667-74     Citation Subset:  IM    
Affiliation:
Norwegian Polar Institute, N-9296 Tromsø, Norway, Hans.Wolkers@npolar.no
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MeSH Terms
Descriptor/Qualifier:
Animals
Arctic Regions
Diet
Environmental Pollutants / analysis,  pharmacokinetics*
Ethers / analysis,  pharmacokinetics
Fishes / physiology
Food Chain*
Polybrominated Biphenyls / analysis,  pharmacokinetics*
Seals, Earless / physiology
Tissue Distribution
Ursidae / physiology
Whales / physiology
Chemical
Reg. No./Substance:
0/Environmental Pollutants; 0/Ethers; 0/Polybrominated Biphenyls

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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