International Joint Research Center for Persistent Toxic Substances (IJR-PTS), College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, China.
Mar Pollut Bull. 2012 Mar;64(3):539-45. doi: 10.1016/j.marpolbul.2011.12.023. Epub 2012 Jan 25.
Twenty-three surface sediment samples were collected from Jiaojiang Estuary, East China Sea in order to assess the distribution, possible sources, and potential risk of polychlorinated biphenyls (PCBs) in the environment. Total concentrations of PCBs ranged from 4.93 to 108.79 ng g(-1) dry weight for all sampling stations, with a substantial higher concentration in the inner part of the estuary than the outer part of the estuary. PCB patterns in sediments from sites 1-8 were extremely dominated by tetra-PCBs, which probably due to the discharge of local industrial plants but not the expected input from the nearby e-waste recycling areas. Principal component analysis revealed that the sources of PCBs for sites 9-23 were associated with Aroclor 1248 or Aroclor 1221. However, physical migration and bio-degradation may also play a role on PCB distribution. Hazard assessment of PCBs indicated possible toxic potential, particularly in areas close to point sources.
为了评估环境中多氯联苯（PCBs）的分布、可能来源和潜在风险，从东海椒江采集了 23 个表层沉积物样品。所有采样点的 PCBs 总浓度范围为 4.93 至 108.79ng g(-1) 干重，其中河口内部的浓度明显高于河口外部。站点 1-8 处沉积物中的 PCB 模式主要由四氯联苯组成，这可能是由于当地工业工厂的排放，而不是附近电子废物回收区预期的输入。主成分分析表明，站点 9-23 的 PCBs 来源与 Aroclor 1248 或 Aroclor 1221 有关。然而，物理迁移和生物降解也可能对 PCB 的分布起作用。PCBs 的危害评估表明可能存在毒性，特别是在靠近点源的地区。
