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Transport and fate of polybrominated diphenyl ethers in the Baltic and Arctic regions

image of Transport and fate of polybrominated diphenyl ethers in the Baltic and Arctic regions

In the last decades, concern has been raised regarding the use of polybrominated diphenyl ethers (PBDEs) due to its increased environmental occurrence and its possible toxicological impact in humans and wildlife. As a result, two of the commercial PBDE products have recently been banned within the EU, while the use of the third product (DecaBDE) is still approved. A dynamic, fugacity-based, regional multimedia fate and transport model (POPCYCLING-Baltic) has been used to assess the historical behaviour and the potential future fate of polybrominated diphenyl ethers (PBDEs), exemplifying different emission scenarios following the introduction of restricting measures. The past, current and future consumption and emission of PBDEs were estimated, and the environmental fate of individual compounds was modelled. The possible impact on the Arctic region is also discussed. Uncertainties in the estimates and data gaps were identified.

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Acknowledgements

We are indebted to useful comments on the final report from Ivar Lundbergh and the members of the Nordic Risk Assessment Project group, to Kevin Jones at Lancaster University and for providing unpublished monitoring data for model evaluation, and to Frank Wania for providing access to the model. Furthermore we would like to thank the Nordic Council of Ministers for financing this study.

English

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