| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4425232 | Environmental Pollution | 2011 | 10 Pages |
We determined the residue levels and patterns of hydroxylated polybrominated diphenyl ethers (OH-PBDEs), and related compounds, such as PBDEs, methoxylated PBDEs (MeO-PBDEs), and bromophenols (BPhs) in the blood of eleven cetacean species stranded along the Japanese coasts. The dominant OH- and MeO-PBDE isomers found in all cetaceans were 6OH-BDE47 and 6MeO-BDE47. Additionally, 2,4,6-triBPh was dominant isomer in all cetaceans. In contrast, specific differences in the distribution of para- and meta- OH-PBDE isomers and some BPhs (potential PBDEs metabolites) were found among the cetaceans.Residue levels of ΣMeO-PBDEs and 6OH-BDE47 + 2′OH-BDE68, and 2,4,6-triBPh and 6OH-BDE47 + 2′OH-BDE68 showed a significant positive correlation. These results may suggest that the large percentages of OH-PBDEs, MeO-PBDEs and 2,4,6-triBPh might share common source (i.e. biosynthesis by marine organisms), or metabolic pathway in cetacean species. Significant correlations were found between the concentrations of BDE99 and 2,4,5-triBPh. This result suggested that 2,4,5-triBPh in cetaceans could be a metabolite of BDE99.
► We determined the concentrations of OH-PBDEs in the blood of cetacean species. ► OH-PBDEs, MeO-PBDEs and 2,4,6-triBPh showed a significant positive correlation. ► It was presumed that large percentages of OH-PBDEs were the natural origins. ► Specific differences in the distribution of PBDE metabolites were found in cetaceans. ► Some bromophenols in cetaceans could be a metabolite of PBDEs.
