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目的对武汉市农村饮用水有机磷农药含量进行调查,为进一步制定水源防护措施和农村改水措施提供科学依据。方法用GC-MS测定饮用水中各种有机磷农药含量,并运用化学污染物风险评价公式进行风险概率评价。结果所有水样均未检出乙酰甲胺磷、甲胺磷、水胺硫磷、乐果、敌敌畏、甲基对硫磷、内吸磷和久效磷,部分水样检出了三唑磷、对硫磷、马拉硫磷、杀螟松,这4种农药的均值分别为172ng/L、9.3ng/L、168ng/L、34ng/L,对饮用者所致健康危害的个人年风险在6.9×10-12～7.7×10-10之间。结论有机磷农药通过饮水途径对饮用者所致健康危害的个人年风险远远低于国际辐射防护委员会(ICRP)推荐的最大可接受风险水平,初步认为目前武汉市饮用水中有机磷农药不会对人体产生明显的健康危害。
Objective To investigate the content of organophosphorus pesticide in rural drinking water in Wuhan and provide scientific basis for further developing water source protection measures and rural water diversion measures. Methods The content of various organophosphorus pesticides in drinking water was determined by GC-MS, and the risk probability was evaluated by chemical risk assessment formula. Results Acephate, methamidophos, isocarbophos, dimethoate, dichlorvos, methyl parathion, internal phosphorus uptake and monocrotophos were not detected in all water samples. Triazophos were detected in some water samples, Parathion, malathion, fenitrothion, the mean of these four pesticides were 172ng / L, 9.3ng / L, 168ng / L, 34ng / L, respectively, 6.9 × 10-12 ~ 7.7 × 10-10. Conclusion The personal annual risk of organophosphorus pesticide drinking harm to the drinker through drinking water is far lower than the maximum acceptable risk level recommended by the International Commission on Radiological Protection (ICRP). It is initially believed that organophosphorus pesticide in drinking water in Wuhan will not Has obvious health hazards to human body.