| Determination of HBCD, PBDEs and MeO-BDEs in California sea lions (Zalophus californianus) stranded between 1993 and 2003. | |
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MedLine Citation:
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PMID: 16293266 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Blubber samples from male California sea lions (Zalphophus californianus) stranded between 1993 and 2003 were analyzed for 27 polybrominated diphenyl ether (PBDE) congeners, three isomers of hexabromocyclododecane (HBCD) and 14 methoxylated polybrominated diphenyl ether (MeO-BDE) congeners. Total PBDEs ranged from 450 ng/g to 4740 ng/g wet mass and total HBCD ranged from < 0.3 ng/g to 12 ng/g wet mass. The concentration of HBCD increased from 0.7 ng/g to12.0 ng/g wet mass in sea lion blubber between 1993 and 2003. However, no significant temporal trend was observed for any of the other brominated compounds over this 10 year period. Only one of the 14 MeO-BDE congeners was detected in the blubber samples, 6-methoxy-2,2',4,4'-tetrabromodiphenyl ether (6-MeO-BDE 47), and concentrations ranged from < 0.2 ng/g to 12 ng/g wet mass. A bromo-, chloro-heterocyclic compound, 1,1'-dimethyl-tetrabromo-dichloro-2,2'-bipyrrole (DBP-Br4Cl2), previously reported in marine species along the Pacific coast, was also identified in the sea lion blubber. DBP-Br4Cl2 ranged from 44 ng/g wet mass to 660 ng/g wet mass and was present at concentrations rivaling the dominant PBDE congener, BDE 47 (2,2',4,4'-tetrabromodiphenyl ether). Concentrations of DBP-Br4Cl2 were positively correlated with 6-MeO-BDE 47 (r = 0.7; p < 0.05). Both of these compounds have been identified in marine algae and sponges, and studies suggest they are both produced from natural sources. This study demonstrates that brominated compounds from both anthropogenic and biogenic sources can accumulate to similar levels in marine mammals. In addition, HBCD concentrations appear to be increasing in California sea lion populations, whereas PBDE concentrations, between 1993 and 2003, were highly variable. |
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Authors:
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H M Stapleton; N G Dodder; J R Kucklick; C M Reddy; M M Schantz; P R Becker; F Gulland; B J Porter; S A Wise |
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Publication Detail:
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Type: Comparative Study; Journal Article Date: 2005-11-15 |
Journal Detail:
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Title: Marine pollution bulletin Volume: 52 ISSN: 0025-326X ISO Abbreviation: Mar. Pollut. Bull. Publication Date: 2006 May |
Date Detail:
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Created Date: 2006-05-29 Completed Date: 2008-01-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0260231 Medline TA: Mar Pollut Bull Country: England |
Other Details:
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Languages: eng Pagination: 522-31 Citation Subset: IM |
Affiliation:
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Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. heather.stapleton@duke.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adipose Tissue
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chemistry* Animals Environmental Monitoring Gas Chromatography-Mass Spectrometry / veterinary Hydrocarbons, Brominated / analysis* Lipids / analysis Male Phenyl Ethers / analysis* Sea Lions / metabolism* Statistics as Topic Time Factors Water Pollutants, Chemical / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Hydrocarbons, Brominated; 0/Lipids; 0/Phenyl Ethers; 0/Water Pollutants, Chemical; 101-84-8/phenyl ether; 25637-99-4/hexabromocyclododecane |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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