济南市市政供水三氯甲烷和四氯化碳含量及风险评估

Assessment on the Levels and Health Risks of Chloroform and Carbon Tetrachloride in Municipal Water Supplies in Jinan

摘要:
目的分析济南市主城区饮用水中三氯甲烷和四氯化碳的含量并评价其对人体健康风险。
方法 2017年，根据济南市主城区人口分布，设置监测点收集末梢水进行检测分析，并采用健康风险评价方法进行评价。
结果济南市市政供水枯水期和丰水期三氯甲烷和四氯化碳浓度（中位数）分别为5.3、5.8和0.057 6、0.054 μg/L，年致癌风险为19.44×10^-7，非致癌风险为0.0063。
结论济南市市政供水中三氯甲烷和四氯化碳存在一定的健康风险，但在可接受限值之内。

Abstract:
Objectives To analyze the level of chloroform and carbon tetrachloride in drinking water in the main urban zone of Jinan and to assess their potential risks to human health.
Methods The collection of water sample from monitoring sites was based on the distribution of population in the main urban zone of Jinan and water samples were determined in 2017.The health risks were assessed by health risk assessment method.
Results The median levels of chloroform and carbon tetrachloride in tap water samples were 5.3 and 0.0576 in dry season and 5.8 and 0.054 μg/L in wet season, respectively. The carcinogenic risk value was 19.44×10^-7 and the non-carcinogenic risk value was 0.0063.
Conclusions The health risks of chloroform and carbon tetrachloride in municipal water supplies were in the acceptable recommended value.