Methoxylated polybrominated diphenyl ethers (MeO-PBDEs) are major contributors to the persistent organobromine load in sub-Arctic and Arctic marine mammals, 1986-2009

A selection of MeO-BDE and BDE congeners were analyzed in pooled blubber samples of pilot whale (Globicephala melas), ringed seal (Phoca hispida), minke whale (Balaenoptera acutorostrata), fin whale (Balaenoptera physalus), harbor porpoise (Phocoena phocoena), hooded seal (Cystophora cristata), and...

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Bibliographic Details
Published in:Science of The Total Environment
Main Authors: Rotander, Anna, van Bavel, Bert, Rigét, Frank, Auðunsson, Guðjón Atli, Polder, Anuschka, Gabrielsen, Geir Wing, Víkingsson, Gísli, Mikkelsen, Bjarni, Dam, Maria
Format: Article in Journal/Newspaper
Language:English
Published: 2012
Subjects:
Arctic
Arctic marine mammals
Balaenoptera acutorostrata
Balaenoptera physalus
Cystophora cristata
Fin whale
hooded seal
minke whale
Phoca hispida
Phocoena phocoena
ringed seal
toothed whale
Online Access:https://pure.au.dk/portal/da/publications/methoxylated-polybrominated-diphenyl-ethers-meopbdes-are-major-contributors-to-the-persistent-organobromine-load-in-subarctic-and-arctic-marine-mammals-19862009(dcf216f2-7006-4c65-bdd8-182e8a8a5bf5).html
https://doi.org/10.1016/j.scitotenv.2011.12.010
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Summary:A selection of MeO-BDE and BDE congeners were analyzed in pooled blubber samples of pilot whale (Globicephala melas), ringed seal (Phoca hispida), minke whale (Balaenoptera acutorostrata), fin whale (Balaenoptera physalus), harbor porpoise (Phocoena phocoena), hooded seal (Cystophora cristata), and Atlantic white-sided dolphin (Lagenorhynchus acutus), covering a time period of more than 20years (1986-2009). The analytes were extracted and cleaned-up using open column extraction and multi-layer silica gel column chromatography. The analysis was performed using both low resolution and high resolution GC-MS. MeO-PBDE concentrations relative to total PBDE concentrations varied greatly between sampling periods and species. The highest MeO-PBDE levels were found in the toothed whale species pilot whale and white-sided dolphin, often exceeding the concentration of the most abundant PBDE, BDE-47. The lowest MeO-PBDE levels were found in fin whales and ringed seals. The main MeO-BDE congeners were 6-MeO-BDE47 and 2'-MeO-BDE68. A weak correlation only between BDE47 and its methoxylated analog 6-MeO-BDE47 was found and is indicative of a natural source for MeO-PBDEs.

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