地方性氟中毒主要是饮用高氟水所致。它是西北黄土地区主要的地方病之一,它的形成、分布与作为含水介质的黄土有较密切的关系。据有关资料研究,黄土中含有云母、电气石、角闪石类及磷灰石等多种含氟矿物。分析资料表明,黄土含有较高的氟,如洛川黄土全溶氟含量160—404ppm,其中古土壤层含量较高。笔者认为黄土层地下水的含氟 Local fluoride poisoning is mainly caused by drinking high fluoride water. It is one of the major endemic diseases in the northwestern loess area. Its formation and distribution are closely related to loess as an aqueous medium. According to the data research, loess contains mica, tourmaline, amphiboles and apatite and other fluorinated minerals. Analysis of the data shows that the loess contains high fluorine, such as Luochuan loess total fluorine content of 160-404ppm, of which the ancient soil layer content is higher. I believe that the loess groundwater fluorine