武汉市饮用水中全氟辛烷磺酸和全氟辛酸健康风险评价

发布时间：2019-05-16 07:34

【摘要】：目的对武汉市饮用水全氟辛烷磺酸(PFOS)和全氟辛酸(PFOA)含量进行调查和风险评估。方法武汉市9个市政水厂,每个水厂采集水源水、出厂水、末梢水各一份,采用固相萃取-高效液相色谱串联质谱法,测定水样中的PFOS和PFOA含量,实验数据采用SPSS 11.0统计软件进行分析,运用化学污染物风险评价模型进行风险概率评价。结果所有水样均未检出PFOS。饮用水中PFOA含量水源水为18.12~119.31 ng/L,出厂水为17.25~108.98 ng/L,末梢水17.01~112.91 ng/L。PFOA含量水源水与出厂水、末梢水,出厂水与末梢水之间均存在正相关关系(P≤0.01),但水源水、出厂水、末梢水中PFOA浓度分布差异无统计学意义。以汉江和长江为水源地的饮用水中PFOA通过饮水途径对饮用者所致健康危害的个人年风险分别为3.0×10-11和1.2×10-10。结论武汉市饮用水中存在PFOA污染,PFOA通过饮水途径对饮用者所致健康危害的个人年风险低于国际辐射防护委员会(ICRP)推荐的最大可接受水平。
[Abstract]:Objective to investigate the contents of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoate (PFOA) in drinking water of Wuhan. Methods the contents of PFOS and PFOA in 9 municipal water plants in Wuhan were determined by solid phase extraction-high performance liquid chromatography (HPLC) mass spectrometry. The experimental data were analyzed by SPSS 11.0 statistical software, and the risk probability evaluation was carried out by using the risk assessment model of chemical pollutants. Results PFOS. was not detected in all water samples. The content of PFOA in drinking water is 18.12 鈮，

本文编号：2478123