中文摘要：

为了解永城市浅层地下水中氟化物对居民健康的危害和富集原因，运用美国环保局（USEPA）推荐的健康风险评价模型对永城市8个乡镇浅层地下水氟化物进行健康风险评价，得出各乡镇浅层地下水氟化物所致个人健康风险均介于1E-08-2E-08（每年），且各乡镇浅层地下水氟化物所致个人健康年风险与对应各乡镇实际氟骨病犯病率具有较好的相关性，相关系数R=0.73076；将商丘市其他各县区出露基岩面积、地形、地下水盖层岩性等方面与永城市进行对比分析，得出偏酸性基岩的风化、地势低洼，浅层地下水盖层岩性偏粘粒为永城市浅层地下水氟富集的主要原因。

英文摘要：

In order to understand the harm of residents health and the reason of enrichment about the fluoride in shallow groundwater of Yongcheng, the fluoride health risks of eight towns in Yongcheng are assessed by the health risk assessment model recommended by the U.S. Environmental Protection Agency （USEPA）, suggested that the fluoride-induced personal health risks in townships are between 1E-08-2E-08 （a-1） and have a high correlation with the actual incidence of fluorosis （correlation coefficient R = 0.73076）; Comparative analysis of these three aspects about the area of exposed bedrock, landform and groundwater cap rock in Shangqiu other counties with Yongcheng, concluded that the main reason of fluorine enrichment in Yongcheng is the differentiation of acidic bedrock, low-lying and fine lithology of shallow groundwater cap, etc.