中国太湖地区某县不同农田表层土壤中多氯联苯的污染及同系物分布。
Contamination and congener profiles of polychlorinated biphenyls from different agricultural top soils in a county of the Tailake Region, China.
机构信息
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China.
出版信息
J Hazard Mater. 2010 Apr 15;176(1-3):1027-31. doi: 10.1016/j.jhazmat.2009.11.143. Epub 2009 Dec 3.
Hundred topsoil (0-20 cm) samples under different land use types were collected from a county in the Tailake Region, China and analyzed for 18 polychlorinated biphenyls (PCBs) including five dioxin-like PCBs. The mean concentration of total PCBs (SigmaPCBs) for all sites was 1.071 microg kg(-1) dry weight (dw) with a range of 0.016 microg kg(-1) to 4.050 microg kg(-1), and the concentration of total Dioxin-like PCBs (SigmaDioxin-like PCBs) was 0.352 microg kg(-1) about 33% of SigmaPCBs. The concentration of SigmaPCBs in paddy field (PF) soils with a mean of 1.63 microg kg(-1) was higher than that in vegetable soil with a mean of 0.882 microg kg(-1), but the concentration of Dioxin-like PCBs in PF soil was lower than that in commercial vegetable production soil. The concentration of heavier weighted molecular PCB congeners (> or = penta-PCBs) in vegetable soil accounted for 98% of SigmaPCBs, while that in Paddy field soil for 65% of SigmaPCBs.
从中国太湖地区的一个县采集了 100 个不同土地利用类型的表层土壤（0-20 厘米）样本，并对 18 种多氯联苯（PCBs）进行了分析，包括 5 种二恶英类 PCBs。所有采样点总 PCB（ΣPCBs）的平均浓度为 1.071μgkg-1干重（dw），范围为 0.016μgkg-1至 4.050μgkg-1，总二恶英类 PCB（ΣDioxin-like PCBs）的浓度为 0.352μgkg-1，约占ΣPCBs 的 33%。水田（PF）土壤中ΣPCBs 的浓度平均值为 1.63μgkg-1，高于蔬菜地土壤中ΣPCBs 的浓度平均值 0.882μgkg-1，但 PF 土壤中二恶英类 PCBs 的浓度低于商业蔬菜生产土壤。蔬菜地土壤中较重分子 PCB 同系物（≥五氯 PCBs）的浓度占ΣPCBs 的 98%，而 PF 土壤中占 65%。
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