title: [Spatial distribution of soil PCBs congeners in typical area of Yangtze River Delta region].
abstract: 191 surface farmland soil samples were collected from an area of 27 km2 in typical polluted county of the Yangtze River Delta region and analyzed for concentrations of 16 kinds of polychlorinated biphenyls. The results of statistical analysis indicated that the concentrations of PCBs in the soils ranged from 0.01-484.5 ng/g, with the average concentration of 35.52 ng/g. In farmland soils tri- and tetra-chlorinated biphenyls were the main congeners, and some proportional penta- and hexachlorinated biphenyls also existed. The spatial analysis showed that the PCBs concentrations were stronger correlated in a given spatial range, and indicated that in the farmland soil PCBs spatial distribution pattern had an extent relationship with the activities of dismantling electronic wastes, burning plastic cable and line, wastewater irrigation and some pollution enterprises position in this typical region.
authors.affiliation: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. yteng@issas.ac.cn
authors.forename: Ying
authors.initials: Y
authors.lastname: Teng
authors.forename: Mao-kun
authors.initials: MK
authors.lastname: Zheng
authors.forename: Yong-ming
authors.initials: YM
authors.lastname: Luo
authors.forename: Jun
authors.initials: J
authors.lastname: Gao
authors.forename: Zhen-gao
authors.initials: ZG
authors.lastname: Li
authors.forename: Long-hua
authors.initials: LH
authors.lastname: Wu
mesh_terms: D002681:China; D018556:Crops, Agricultural / Q000254:growth & development*; D004784:Environmental Monitoring; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D045483:Rivers; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*
chemical_list: D012987:Soil; D012989:Soil Pollutants; D011078:Polychlorinated Biphenyls