title: Kinetics of bioconcentration and clearance of 28 polychlorinated biphenyl congeners in zebrafish (Brachydanio rerio).
abstract: Bioconcentration experiments were performed on 28 polychlorinated biphenyl (PCB) congeners with NCl = 2 to NCl = 10, evaluating them simultaneously. Bioconcentration factors (BCFs) were calculated from the uptake rate constant (k1) and the clearance rate constant (k2) as BCF = k1/k2. BCFs on a wet weight basis ranged from 7710 to 940,000. They were correlated with octanol-water partition coefficients (P). The curvilinear relationship between log BCF and log P based upon data covering the log P range 5.06 to 8.18. About a log P of 7.38, a range of "optimal lipophilicity," results in highest BCFs for PCBs, above which the degree of bioconcentration decreases.
authors.affiliation: Fachbereich Chemie, Universität Oldenburg, FRG.
authors.forename: K
authors.initials: K
authors.lastname: Fox
authors.forename: G P
authors.initials: GP
authors.lastname: Zauke
authors.forename: W
authors.initials: W
authors.lastname: Butte
mesh_terms: D000818:Animals; D050356:Lipid Metabolism; D011078:Polychlorinated Biphenyls / Q000493:pharmacokinetics*; D015027:Zebrafish / Q000378:metabolism*
chemical_list: D011078:Polychlorinated Biphenyls