Abstract
The profiles (concentrations scaled to a sum of 100) of polybrominated diphenyl ethers (PBDEs) in aquatic fauna differ from those of the commercial PBDE formulations, particularly by a much higher proportion of the congener 47. At the same time, the profiles reported by different authors vary a great deal and no patterns related to species, localities, etc. are obvious. It seems that there are systematic differences among the reporting laboratories, and measurement errors within the same laboratory may also play a role. However, the profiles of PBDEs in fish from the Baltic are very similar and form a tight "cluster". PBDE profiles in crustaceans appear different from those in fish.
Highlights
The profiles of polybrominated diphenyl ethers (PBDEs) in aquatic fauna differ from those of the commercial PBDE formulations, by a much higher proportion of the congener 47
This paper examines the patterns of the profiles of the most frequently reported five PBDEs, of seven PBDEs reported in three papers, and of four PBDEs reported by two laboratories for lake trout and walleye from the Great Lakes
For the five-dimensional data, most of the pattern is visible from the plane of the first two principal components, which capture (42+28=70) % of the variation of the original data, as indicated on the axes (Figure 1)
Summary
The profiles (concentrations scaled to a sum of 100) of polybrominated diphenyl ethers (PBDEs) in aquatic fauna differ from those of the commercial PBDE formulations, by a much higher proportion of the congener 47. The profiles reported by different authors vary a great deal and no patterns related to species, localities, etc. It seems that there are systematic differences among the reporting laboratories, and measurement errors within the same laboratory may play a role. The profiles of PBDEs in fish from the Baltic are very similar and form a tight “cluster”. PBDE profiles in crustaceans appear different from those in fish. This paper examines the patterns of the profiles of the most frequently reported five PBDEs, of seven PBDEs reported in three papers, and of four PBDEs reported by two laboratories for lake trout and walleye from the Great Lakes
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