title: Congener specific distributions of polybrominated diphenyl ethers (PBDEs) in sediment and mussel (Mytilus edulis) of the Bo Sea, China.
abstract: Congener specific distributions of polybrominated diphenyl ethers (PBDEs) were investigated in sediment and mussel (Mytilus edulis) collected from the coast of Bo Sea, China. The median values of BDE-209 and SigmaPBDEs (including BDE-17, -28, -47, -66, -71, -85, -99, -100, -138, -153, -154, -183 and -190) were 2.29 and 0.16 ng g(-1)dry weight in sediment, and 2.43 and 0.68 ng g(-1)dry weight in mussel, respectively. BDE-209 was the predominant congener (61-99% in mussel and 75-99% in sediment except for one sample with 17%). Different congener patterns (excluding BDE-209) were observed between sediment and mussel, which were attributed to individual congener's bioaccumulation potential and/or the ability to metabolize. The four most abundant congeners were BDE-47 (40.3%), -99 (22.5%), -71 (8.9%) and -28 (5.8%) in sediment, and -47 (36.4%), -28 (14.5%), -154 (8.6%) and -71 (8.6%) in mussel, respectively. The ratios of BDE-47/BDE-99 and BDE-100/BDE-99 in sediment were lower than those in mussel, indicating higher transformation and uptake rate of BDE-99 in mussel. The biota-sediment accumulation factor (BSAF) of individual PBDE congeners declined with the increase of their logarithm of octanol-water partition coefficients (log K(OW)) except for BDE-154, indicating congeners with higher logK(OW) were more likely to retain in sediment. These can be explained with a high affinity of these compounds for carbonaceous geosorbents, and molecular steric hindrance that limits large, very hydrophobic organic compounds from penetrating the cellular membranes.
authors.affiliation: National Marine Environmental Monitoring Center, Dalian 116023, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wang
authors.forename: Xindong
authors.initials: X
authors.lastname: Ma
authors.forename: Zhongsheng
authors.initials: Z
authors.lastname: Lin
authors.forename: Guangshui
authors.initials: G
authors.lastname: Na
authors.forename: Ziwei
authors.initials: Z
authors.lastname: Yao
mesh_terms: D000818:Animals; D002681:China; D019015:Geologic Sediments / Q000032:analysis*; D055768:Halogenated Diphenyl Ethers / Q000032:analysis*; D049880:Mytilus edulis / Q000737:chemistry*; D009792:Oceans and Seas; D012989:Soil Pollutants / Q000032:analysis
chemical_list: C477694:2,2',4,4',5-brominated diphenyl ether; D055768:Halogenated Diphenyl Ethers; D012989:Soil Pollutants