中文关键词
挥发性有机物白洋淀分布特征健康风险评价综合污染指数 英文关键词volatile organic compounds (VOCs)Baiyangdian Lakedistribution characteristicshealth risk assessmentcomprehensive pollution index |
作者 | 单位 | E-mail | 高秋生 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012 中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083 | wintersgaoo@163.com | 赵永辉 | 河南省环境监控中心, 郑州 450000 | | 焦立新 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012 中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 | 287559418@qq.com | 田自强 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012 | | 杨柳 | 中国矿业大学(北京)地球科学与测绘工程学院, 北京 100083 | | 杨苏文 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012 中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 | | 崔志丹 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012 中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 | | 郝子峰 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012 中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 | |
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中文摘要 |
为研究白洋淀水体中挥发性有机物(volatile organic compounds,VOCs)污染现状,于2016年3月在白洋淀采集15个水体样品,采用吹扫捕集-气相色谱-质谱法分析了54种VOCs的浓度,对其分布特征和健康风险进行讨论,并尝试利用综合污染指数法对白洋淀水体VOCs污染情况进行评估.结果表明:①白洋淀水体中共有14种VOCs被检测出来,其中二氯甲烷、苯、甲苯、乙苯、二甲苯、1,3,5-三甲基苯检出率为100%,二甲苯浓度最高,平均值为564.9ng·L-1;三氯乙烯浓度最低,平均值仅为3.3 ng·L-1,检出率为13.3%.②白洋淀水体中VOCs总浓度在423.0~4207.8 ng·L-1之间,苯系物是主要污染物,主要来源可能是上游污水处理厂的出水、工业废水以及城市内机动车尾气的排放.③健康风险评价显示白洋淀水体中VOCs不会对人体产生致癌和非致癌风险;VOCs综合污染指数显示白洋淀水体中VOCs处于清洁水平. |
英文摘要 |
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-1; and trichloroethylene had the lowest concentration with an average concentration of 3.3 ng ·L-1 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-1, 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. |
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