DETERMINATION OF POLYBROMINATED DIBENZO-p-DIOXINS, Co-PXBS AND BROMINATED FLAME RETARDANT IN FISH

摘要

The levels of brominated flame retardants (BFRs) and related compounds were determined in market fish from Japan. We collected 12 fish samples from 3 regions (Tyubu, Tyugoku-Shikoku and Kyushu) in Japan and analyzed brominated dioxins, polychlorinated/ brominated biphenyls (Co-PXBs), polybrominated diphenyl ethers (PBDEs) and polybrominated biphenyls (PBBs) to determine levels of contamination. We found the brominated dioxins 2, 3, 7, 8 - TeBDD and 2, 3, 7, 8 - TeBDF in conger eels, but not at serious levels (total concentrations ranged from 0.009 to 0.015 pgTEQ/g ww). Mono-bromo polychlorinated dibenzo-p-dioxins/dibenzofurans (MoBrPCDD/DFs) and Co-PXBs were not detected in any samples. We detected PBDE congeners in all samples at 0.016 - 0.818 ng/g ww. The highest PBDEs concentration was found in conger eels and mackerel. For PBBs, we detected tetra-hexa brominated compounds in 9 samples at 0.105 - 2.24 pg/g ww, and the detected congeners were 2,2',5,5'-TeBB (#52), 2,2',4,5'-TeBB (#49), 2,2',4,5,5'-PeBB (#101), 2,2',4,4',6,6'-HxBB (#155) and 2,2',4,4',5,5'-HxBB (#153). The highest concentration was found in conger eels and mackerel, the same as the case with PBDEs. The most abundant congener was #155, followed by #52.