宁夏地氟病与原生地球化学环境的研究

地氟病是宁夏广泛分布的一种地方病，与宁夏特殊的原生地球化学环境有密切关系．宁夏东南部地区由于高氟地下水广泛分布，当地居民长期饮用高氟水导致地氟病发病率非常高，尤以盐池县为甚．以盐池县为例，运用地质和构造分析方法，结合地层土体的淋滤实验和岩体的溶滤实验，研究地下水中氟的来源问题；通过对影响地下水中氟含量的各种因素之间的相互作用进行分析研究，进而确定地下水中氟的富集规律，研究认为，地下水中的氟主要来自与所接触的岩土体中含氟矿物和吸附性的氟的溶解．

Natural geochemical environment and endemia fluorosis in Ningxia

The endemic fluorosis is a kind of endemia widely distributed in Ningxia, and this is strongly related to the special natural geochemical environment of Ningxia. The local inhabitants had a high incidence of endemic fluorosis for drinking the high fluorine content groundwater that widely distributed in southeast of Ningxia, especially in Yanchi County. Taking an example for Yanchi County, the source of fluorine in groundwater was studied by applying the eluviation experimentation of soil, the lixiviation experimentation of rock, and the analysis methods of geology and structure in this paper. And then, the distribution law of fluorine in groundwater was confirmed by studying interaction of various factors that affected the fluorine content in groundwater. The study showed that the fluorine content in groundwater was from having fluorine content mineral and dissolving of adsorptive fluorine in rock.