句容市饮用水中三氯甲烷和四氯化碳健康风险评价

摘要:目的　初步评价句容市生活饮用水中三氯甲烷和四氯化碳对人体健康产生的潜在危害。方法　于2014年丰水期和枯水期，对句容市饮用水中的三氯甲烷和四氯化碳进行检测，并对饮水途径所引起的健康风险做出初步评价。结果　句容市饮水中三氯甲烷、四氯化碳的平均浓度分别为0.0162 mg/L和0.00159 mg/L，合格率分别为100%和78.9%，致癌个人年风险为0.158×10-6/a和9.27×10-6/a，非致癌健康风险值个人年风险为5.09×10-2/a和7.13×10-2/a。结论　句容市饮用水中三氯甲烷和四氯化碳对人体的健康产生的潜在致癌个人年风险和非致癌健康风险均在美国环境保护署（USEPA）可以接受的限值之内。

Health risk assessment of trichloromethane and carbon tetrachloride in drinking water,Jurong

Abstract: Objective To explore the potential health hazards of crichloromethane and carbon tetrachloride contaminations in drinking water in Jurong. Methods The concentration of trichloromethane and carbon tetrachloride were determined from the dry season and wet period in Jurong. Preliminary health risks of trichloromethane and carbon tetrachloride associated in drinking water were assessed. Results The average concentrations of chloroform and carbon tetrachloride in drinking water were 0.01620 mg/L and 0.00159mg/L, respectively. Accodingly, the compliance rates were 100% and 78.9%, respectively. The values of trichloromethane and carbon tetrachloride to the individual person per year in drinking water were 5.09×10-2/a and 7.13×10-2/a. Conclusion The health risks of carcinogenesis and non-carcinogenic induced by trichloromethane and carbon tetrachloride through drinking water are in the acceptable value of USEPA.