Zhang Qian-Qian, Ying Guang-Guo, Chen Zhi-Feng, Zhao Jian-Liang, Liu You-Sheng
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, People's Republic of China.
Environ Sci Pollut Res Int. 2015 Jul;22(13):10130-43. doi: 10.1007/s11356-015-4218-z. Epub 2015 Feb 19.
This study aimed to investigate the emission and multimedia fate as well as potential risks of triclosan (TCS) in all of 58 basins in China. The results showed that the total usage of TCS in whole China was 100 t/year, and the discharge to the receiving environment was estimated to be 66.1 t/year. The predicted TCS concentrations by the level III fugacity model were within an order of magnitude of the reported measured concentrations. TCS (90.8%) was discharged into the water compartment and 9.2% to the soil compartment. The TCS concentration levels in east China were found generally higher than in west China. In addition, the input flux for TCS to seawater was largely attributed to the seasonal variations in advection flows. Preliminary risk assessment showed that medium to high ecological risks for TCS would be expected in the eastern part of China due to the high population density.
本研究旨在调查中国58个流域中三氯生（TCS）的排放、在多介质环境中的归趋及其潜在风险。结果表明，中国三氯生的总使用量为100吨/年，估算进入环境的排放量为66.1吨/年。通过三级逸度模型预测的三氯生浓度与报道的实测浓度在一个数量级范围内。三氯生（90.8%）排放到水体中，9.2%排放到土壤中。发现中国东部的三氯生浓度水平总体高于西部。此外，三氯生进入海水的输入通量很大程度上归因于平流流量的季节变化。初步风险评估表明，由于中国东部人口密度高，预计三氯生将带来中到高的生态风险。
