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Absorption of decabromodiphenyl ether and other organohalogen chemicals by grey seals (Halichoerus grypus).

Thomas, Gareth and Moss, Simon and Asplund, Lillemor and Hall, Ailsa (2005) Absorption of decabromodiphenyl ether and other organohalogen chemicals by grey seals (Halichoerus grypus). Environmental Pollution, 133 (3). pp. 581-586. ISSN 0269-7491

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    Abstract

    An input–output balance study was performed for polybrominated diphenyl ethers, polychlorinated biphenyls and some organochlorine pesticides on three captive, juvenile grey seals (Halichoerus grypus). The animals were fed a diet of herring for six months, during the last three months of which this study was performed. A supplement of decabromodiphenyl ether was included in the diet during the second month of the study. Consistently high absorption (>89%) was observed for all of the chemicals studied, whereas work on other animals has generally shown high (>80%) net absorption at log KOW < 6, dropping towards higher log KOW, and very low absorption of decabromodiphenyl ether. The half-life of decabromodiphenyl ether in blood was estimated to be between 8.5 and 13 days. Measurable concentrations of decabromodiphenyl ether were detected in seal blubber at the end of the study, indicating that this chemical can be stored in adipose and may bioaccumulate. Current understanding of the mechanism of absorption of organohalogen chemicals and the potential for accumulation of decabromodiphenyl ether will need reassessing in the light of these results. Decabromodiphenyl ether is absorbed effectively from the diet by grey seals, and can be stored in the blubber even after exposure ceases.

    Item Type: Article
    Journal or Publication Title: Environmental Pollution
    Additional Information: The final, definitive version of this article has been published in the Journal, Environmental Pollution, 133 (3), 2005, © ELSEVIER.
    Uncontrolled Keywords: Polybrominated diphenylethers ; BDE209 ; PCBs (polychlorinated biphenyls) ; Marine foodchain ; Bioavailability ; Fish
    Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
    Departments: Faculty of Science and Technology > Lancaster Environment Centre
    ID Code: 4397
    Deposited By: Dr Gareth Thomas
    Deposited On: 12 Mar 2008 15:52
    Refereed?: Yes
    Published?: Published
    Last Modified: 26 Jul 2012 18:10
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/4397

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