Analysis of polybrominated dibenzo-p-dioxins (PBDD), hydroxylated polybrominated diphenyl ethers (OH-PBDE) and methoxylated polybrominated diphenyl ethers (MeO-PBDE) in two food webs in the Baltic Sea


Project leader


Funding source

Formas - The Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning


Project Details

Start date: 01/01/2006
End date: 31/12/2008
Funding: 2490000 SEK


Description

We have recently discovered tribrominated dioxins (triBDD) in mussels from the Baltic Sea. The concentration of the dominant triBDD congeners exceeds that of the most dominating PCB congeners (eg. CB-153). The most likely hypothesis for the source of the triBDDs in blue mussels is their formation in the marine environment from OH-PBDE as precursor molecules. We have also found the latter in blue mussels and in red algae from the Baltic Sea. OH-PBDEs are known to be natural products formed in the marine environment. Our hypothesis is that the sources of brominated substances are for example red algae and cyanobacteria and that blue mussels can accumulate these substances by e.g. filtration. The aim of the applied project is to investigate the levels and spatial distribution of PBDD and OH-/MeO-PBDE in one benthic and one pelagic food web in the Baltic Sea. The aim is also to establish a data base for an initial ecotoxicological risk assessment concerning these substances.


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Last updated on 2017-24-03 at 12:59