Gao Qiu-Sheng, Zhao Yong-Hui, Jiao Li-Xin, Tian Zi-Qiang, Yang Liu, Yang Su-Wen, Cui Zhi-Dan, Hao Zi-Feng
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Huan Jing Ke Xue. 2018 May 8;39(5):2048-2055. doi: 10.13227/j.hjkx.201710232.
In order to survey the present pollution from volatile organic compounds in Baiyangdian Lake, 15 water samples were collected in March 2016, and analyzed for 54 VOCs by purge and trap gas chromatography-mass spectrometry. The distribution characteristics and health risk assessments were investigated, and the pollution from the VOCs was evaluated by a comprehensive pollution index. The survey showed that:① a total of 14 VOCs were detected in Baiyangdian water, with a 100% detection rate for dichloromethane, benzene, toluene, ethylbenzene, xylene, and 1,3,5-trimethylbenzene; xylene had the highest concentration with an average concentration of 564.9 ng ·L; and trichloroethylene had the lowest concentration with an average concentration of 3.3 ng ·L and a detection rate of only 13.3%; ② the total concentration of VOCs in Baiyangdian water was between 423.0 and 4207.8 ng ·L, and benzene was the main pollutant, with its main source coming from the effluent from the upstream sewage treatment plant, the industrial wastewater, and the exhaust emissions of motor vehicles in the city; and ③the health risk assessment showed that VOCs in Baiyangdian Lake did not produce carcinogenic and non-carcinogenic risks to humans, and the VOC comprehensive pollution index shows that the VOCs in the Baiyangdian Lake were at a clean level.
为了调查白洋淀挥发性有机化合物的污染现状，于2016年3月采集了15份水样，采用吹扫捕集气相色谱 - 质谱法分析了54种挥发性有机化合物。研究了其分布特征和健康风险评估，并通过综合污染指数对白洋淀挥发性有机化合物的污染状况进行了评价。调查结果表明：①白洋淀水体中共检测出14种挥发性有机化合物，二氯甲烷、苯、甲苯、乙苯、二甲苯和1,3,5 - 三甲苯的检出率均为100%；二甲苯浓度最高，平均浓度为564.9 ng·L；三氯乙烯浓度最低，平均浓度为3.3 ng·L，检出率仅为13.3%；②白洋淀水体中挥发性有机化合物的总浓度在423.0至4207.8 ng·L之间，苯是主要污染物，其主要来源为上游污水处理厂出水、工业废水及城市机动车尾气排放；③健康风险评估表明，白洋淀水体中的挥发性有机化合物对人体未产生致癌和非致癌风险，挥发性有机化合物综合污染指数表明白洋淀水体中的挥发性有机化合物处于清洁水平。
