title: Residues of polychlorinated biphenyls (PCBs) in fish, water and sediment from Shing Mun River.
abstract: The level and pattern of contamination by polychlorinated biphenyls (PCBs) were investigated in tilapia, Oreochromis mossambicus (Peters), sediment, and water from the Shing Mun River. The range of total PCBs was 12.9 ng/g to 181.6 ng/g wet weight in tilapia, 12.7 ng/g to 46.0 ng/g freeze-dried weight in sediment, and 3.8 ng/L to 13.6 ng/L in water. The effect of biomagnification was also observed, PCB concentrations increased from water to sediment to tilapia. PCB congeners occurred in such a way that lower chlorinated PCBs comprised a higher fraction of the total PCBs in water, sediment, and tilapia muscle, whereas higher chlorinated PCBs were more commonly found only in tilapia.
authors.affiliation: Department of Bioogy, Hong Kong Baptist College, Kowloon.
authors.forename: V W
authors.initials: VW
authors.lastname: Chui
authors.forename: S Y
authors.initials: SY
authors.lastname: Lam-Leung
authors.forename: T C
authors.initials: TC
authors.lastname: Chan
mesh_terms: D000818:Animals; D002681:China; D005399:Fishes / Q000378:metabolism*; D008401:Gas Chromatography-Mass Spectrometry; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls