珠三角某市生活饮用水中化学污染物健康风险评价

发布时间：2018-11-13 12:19

【摘要】：目的初步评估珠三角某市生活饮用水中化学污染物对人体健康产生的潜在风险。方法于2015年1~12月,对该市水源水、出厂水和末梢水中5种基因毒物质(砷、六价铬、镉、三氯甲烷和四氯化碳)及12种躯体毒物质(铅、汞、硒、氰化物、氟化物、硝酸盐、铁、氨氮、锰、铜、锌和挥发酚)进行检测,采用美国国家环境保护局推荐的健康风险评价模型对上述17种化学污染物通过饮水途径所引起的健康风险做出初步评价。结果水源水中化学污染物所引起的致癌风险、非致癌风险和总健康风险分别为3.75×10~(-5)/a、206.27×10~(-11)/a和3.75×10~(-5)/a,出厂水中化学污染物所引起的致癌风险、非致癌风险和总健康风险分别为3.32×10~(-5)/a、142.68×10~(-11)/a和3.32×10~(-5)/a,末梢水中化学污染物所引起的致癌风险、非致癌风险和总健康风险分别为3.37×10~(-5)/a、150.34×10~(-11)/a和3.37×10~(-5)/a。致癌风险、非致癌风险和总健康风险由高到低均分别为水源水末梢水出厂水。结论珠三角某市水源水、出厂水和末梢水中17种化学污染物对人体健康产生的健康风险水平均在国际辐射防护委员会规定的最大可接受风险水平(5.0×10~(-5)/a)范围内。
[Abstract]:Objective to evaluate the potential health risks of chemical pollutants in drinking water in Pearl River Delta. Methods from January to December 2015, five genetic toxic substances (arsenic, hexavalent chromium, cadmium, trichloromethane and carbon tetrachloride) and 12 somatotoxic substances (lead, mercury, selenium, cyanide, fluoride, nitrate) were collected from source water, factory water and peripheral water of the city. Iron, ammonia nitrogen, manganese, copper, zinc and volatile phenol were tested. The health risk caused by 17 chemical pollutants through drinking water was preliminarily evaluated using the health risk assessment model recommended by the United States Environmental Protection Agency. Results the carcinogenic risk, non-carcinogenic risk and total health risk caused by chemical pollutants in source water were 3.75 脳 10 ~ (-5) / a and 3.75 脳 10 ~ (-5) / a, respectively. The carcinogenic risk, non-carcinogenic risk and total health risk caused by chemical pollutants in factory water were 3.32 脳 10 ~ (-5) / a and 3.32 脳 10 ~ (-5) / a, respectively, and the total health risks were 3.32 脳 10 ~ (-5) / a and 3.32 脳 10 ~ (-5) / a, respectively. The carcinogenic risk, non-carcinogenic risk and total health risk caused by chemical pollutants in peripheral water were 3.37 脳 10 ~ (-5) / a and 3.37 脳 10 ~ (-5) / a, respectively. Carcinogenic risk, non-carcinogenic risk and total health risk from high to low are source water terminal water outgoing water. Conclusion the source water of a city in the Pearl River Delta, The health risk levels of 17 kinds of chemical pollutants to human health in factory water and peripheral water are all within the maximum acceptable risk level (5.0 脳 10 ~ (-5) / a) set by the International Commission on radiation Protection.
【作者单位】：中山市疾病预防控制中心公共卫生与食品卫生科;
【基金】：中山市科技计划项目(2015B1015)
【分类号】：R123.1

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