State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China.
Chemosphere. 2011 Jan;82(5):648-55. doi: 10.1016/j.chemosphere.2010.11.014. Epub 2010 Dec 4.
Fengjiang is a large e-waste dismantling site located in southeast China. In this paper, apple snail and soil samples were collected from this e-waste dismantling site and 25 vicinal towns to investigate the contamination status, spatial distributions and congener patterns of polychlorinated biphenyls (PCBs) and polybrominated biphenyl ethers (PBDEs). Total PCB concentrations in apple snails (3.78-1812ngg(-1) dry weight (dw)) were significant higher than that in soil samples (0.48-90.1ngg(-1) dw). PBDE (excluding BDE 209) concentrations in apple snail and soil samples ranged from 0.09 to 27.7ngg(-1) dw and 0.06 to 31.2ngg(-1) dw, respectively. Concentrations of PCBs and PBDEs in snails and soils correlated negatively with the distance from Fengjiang. Both the concentrations and profiles of the pollutants were significantly correlated (p<0.05) between the snail and soil samples, indicating the suitability of apple snail as a reliable bioindicator for PCBs and PBDEs contamination in this region. Relatively high concentrations of PCBs and PBDEs at locations far from e-waste dismantling sites implied that these pollutants have been transported to surrounding regions.
丰江是中国东南部的一个大型电子废物拆解场。本文采集了来自该电子废物拆解场及周边 25 个临近乡镇的福寿螺和土壤样品，以调查多氯联苯（PCBs）和多溴联苯醚（PBDEs）的污染状况、空间分布和同系物分布模式。福寿螺中总 PCB 浓度（3.78-1812ng/g 干重（dw））明显高于土壤样品（0.48-90.1ng/g dw）。福寿螺和土壤样品中 PBDE（不包括 BDE 209）浓度范围分别为 0.09-27.7ng/g dw 和 0.06-31.2ng/g dw。福寿螺和土壤中 PCBs 和 PBDEs 的浓度与距离丰江的远近呈负相关。污染物的浓度和分布在螺和土壤样本之间呈显著相关（p<0.05），表明福寿螺适合作为该地区 PCBs 和 PBDEs 污染的可靠生物标志物。远离电子废物拆解场的地点存在相对较高浓度的 PCBs 和 PBDEs，表明这些污染物已被运输到周边地区。
