State Environmental Protection Key Laboratory of Dioxin Pollution Control, National Research Center for Environmental Analysis and Measurement, No. 1 Yuhuinanlu, Chaoyang District, Beijing 100029, China.
Chemosphere. 2011 Oct;85(3):399-405. doi: 10.1016/j.chemosphere.2011.07.064. Epub 2011 Sep 3.
In this study, polychlorinated biphenyls (PCBs) pollution in the surface water of the Yangtze River Delta (YRD) was investigated. A total of 26 samples were collected from water bodies in three cities within the YRD during the dry season from October to November of 2009. The total PCBs (dissolved plus particulate) ranged from 1.23 to 16.6 ng L(-1) and were dominated by tri-, tetra-, and penta-chlorinated biphenyls. The mean PCBs in the Beijing-Hangzhou Grand Canal and the Yangtze River were 8.84 and 3.36 ng L(-1), respectively. A t-test showed that there were no significant differences in the concentration of samples from the metropolitan area and the development zone. According to the Chinese national environmental quality standards for surface water (GB 3838-2002), the concentrations of PCBs observed in this study do not pose a hazard to aquatic or human health. Overall, this study described the PCB concentration and homolog distribution patterns in one of the most rapidly developing areas in China, and the results can be used as reference levels for future PCB monitoring programs.
本研究调查了长江三角洲（YRD）地表水的多氯联苯（PCBs）污染情况。2009 年 10 月至 11 月旱季，从 YRD 三个城市的水体中采集了 26 个水样。总 PCBs（溶解态加颗粒态）浓度范围为 1.23-16.6ng/L，以三氯、四氯和五氯联苯为主。京杭大运河和长江的 PCBs 平均值分别为 8.84 和 3.36ng/L。t 检验表明，市区和开发区的样本浓度没有显著差异。根据中国地表水质量标准（GB 3838-2002），本研究中观察到的 PCBs 浓度对水生或人类健康没有危害。总的来说，本研究描述了中国发展最快的地区之一的 PCB 浓度和同系物分布模式，研究结果可作为未来 PCB 监测计划的参考水平。
