title: [Levels of polychlorinated biphenyls in adolescents' hair from Gongzhuling, Jilin].
abstract: Adolescents' (12-18) hair samples (n = 23) collected from Gongzhuling Jilin were analyzed for 30 polychlorinated biphenyl (PCB) congeners by gas chromatograph-mass spectrometer (GC-MS). The distribution characteristics, sources and relationship with genders of PCBs in adolescents' hair were addressed as well. The results indicated that the detection frequency of PCBs were 100% with average concentration of (68.85 +/- 36.72) ng x g(-1) and detection range from 11.66 ng x g(-1) to 127.86 ng x g(-1), respectively. This region was contaminated to some extent. CB-28, CB-52, CB-87 and CB-82 were the major congeners which occupied 62%. Penta-CBs were the dominant contributors (39%), followed by tetra-CBs (29%) and tri-CBs (18%). The different distributions of PCBs congeners in hair from other human tissues and the air are believed to be the fact that PCBs in human hair not only came from endogenous dietary uptake of the contaminants, but also from exogenous atmospheric deposition. The results clearly indicated that these pollutants mainly came from industrial pollution. When gender was considered, significantly higher concentrations for most of the investigated contaminants were found in female compared with male.
authors.affiliation: State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China. lizhang@ibcas.ac.cn
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Yang
authors.initials: Y
authors.lastname: Chen
authors.forename: Xin-Hui
authors.initials: XH
authors.lastname: Liu
authors.forename: Dian-Dou
authors.initials: DD
authors.lastname: Xu
authors.forename: Ling-Ling
authors.initials: LL
authors.lastname: Ma
authors.forename: Zhi-Hong
authors.initials: ZH
authors.lastname: Shi
authors.forename: Gang
authors.initials: G
authors.lastname: Liang
authors.forename: Liu
authors.initials: L
authors.lastname: Shi
authors.forename: Hong
authors.initials: H
authors.lastname: Ouyang
mesh_terms: D000293:Adolescent; D002648:Child; D002681:China; D004785:Environmental Pollutants / Q000032:analysis*; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D006197:Hair / Q000737:chemistry*; D006801:Humans; D008297:Male; D011078:Polychlorinated Biphenyls / Q000032:analysis*
chemical_list: D004785:Environmental Pollutants; D011078:Polychlorinated Biphenyls