title: Bioaccumulation and biotransformation of polybrominated diphenyl ethers in the marine bivalve (Scapharca subcrenata): influence of titanium dioxide nanoparticles.
abstract: Titanium dioxide nanoparticles (nTiO2) have the potential to adsorb co-existing contaminants in aqueous environment to form nanoparticle-contaminant complexes. Adsorption by nTiO2 might impact the fate of contaminants in water. Bioaccumulation experiments were conducted to compare the accumulation of polybrominated diphenyl ethers (PBDEs) in marine bivalve (Scapharca subcrenata) exposed to PBDEs in the presence and absence of nTiO2. PBDEs can be taken up by S. subcrenata through aqueous exposure. nTiO2 acts as a carrier and can enhance the ingestion of PBDEs, but the bioaccumulation of PBDEs was not facilitated significantly in the presence of nTiO2. Similar accumulation kinetics pattern was found after exposing to PBDEs in the presence and absence of nTiO2. Further analysis showed that no significant difference between the congener profiles of PBDEs in the presence and absence of nTiO2, suggesting that nTiO2 would not influence the biotransformation of PBDEs in clams.
authors.affiliation: Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China. Electronic address: tiansy@tust.edu.cn.
authors.forename: Shengyan
authors.initials: S
authors.lastname: Tian
authors.affiliation: Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China.
authors.forename: Yaodan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China.
authors.forename: Chunzheng
authors.initials: C
authors.lastname: Song
authors.affiliation: Shenzhen Key Laboratory for Coastal Ocean Dynamic and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China. Electronic address: zhu.xiaoshan@sz.tsinghua.edu.cn.
authors.forename: Xiaoshan
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, USA.
authors.forename: Baoshan
authors.initials: B
authors.lastname: Xing
mesh_terms: D000327:Adsorption; D000818:Animals; D001711:Biotransformation; D055768:Halogenated Diphenyl Ethers / Q000737:chemistry / Q000378:metabolism*; D053758:Nanoparticles / Q000737:chemistry; D049894:Scapharca / Q000378:metabolism*; D014025:Titanium / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*
chemical_list: D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D014025:Titanium
keywords: Bioaccumulation; Biotransformation; Marine bivalve; Nanoparticles; PBDEs