title: Bioconcentration of chlorinated biphenyls in biota from the North Pacific Ocean.
abstract: This study examined polychlorinated biphenyl (PCB) congener bioconcentration patterns in tissues of marine biota (macrophytes, urchins, mollusks, sea cucumbers, fishes) at Midway Atoll, North Pacific Ocean. Calculated mean lipid-normalized logarithmic bioconcentration factors (log BCFL) for PCB congeners in various marine species ranged from 3.75 to 6.97. The relationship between log BCFL and the logarithmic n-octanol-water partition coefficient (log Kow) can be adequately described by species-specific parabolic models wherein log BCFL generally increases then decreases with increases in log Kow. With the exception of a bilinear model, a variety of hydrophobicity models were generally not successful in closely predicting measured tissue residue concentrations as a function of log Kow. There is no evidence of a consistent pattern of progressive increase in bioconcentration of PCB congeners with increasing trophic level in this nearshore aquatic ecosystem.
authors.affiliation: Ogden Environmental and Energy Services Company, Inc., Honolulu, Hawaii 96817, USA.
authors.forename: B
authors.initials: B
authors.lastname: Hope
authors.forename: S
authors.initials: S
authors.lastname: Scatolini
authors.forename: E
authors.initials: E
authors.lastname: Titus
mesh_terms: D000818:Animals; D008386:Marine Biology; D008954:Models, Biological; D010140:Pacific Ocean; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls