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氟是人体正常代谢需要的元素,每日从水和食物中摄取2.5～3毫克,可防龋齿。但摄量过高,容易中毒,轻者患斑牙症,重者引起氟骨症,骨质疏松,关节僵化,甚至导致瘫痪。据统计,我国饮用高氟水人口达4500万人,几乎都在农村,范围遍及27个省市自治区,特别是在某些海陆交替相地层、干旱半干旱盐渍土地区和火山地区,含氟量超过2毫克/升的水源较多,有的甚至高达27毫克/升,远远超过我国饮用水卫生标准氟浓度不大于0.5～1毫克/升的规定。如内蒙约有480万人生活在高氟饮水
Fluoride is an element required for normal metabolism of the human body. Daily intake of 2.5 to 3 milligrams from water and food can prevent dental caries. However, the intake is too high, it is easy to poison, the light suffers from dental plaque, and the severe one causes skeletal fluorosis, osteoporosis, joint rigidity, and even paralysis. According to statistics, China’s population of drinking high-fluorine water amounts to 45 million, almost all in rural areas, covering 27 provinces, municipalities and autonomous regions, especially in some land-alternate stratum, arid and semi-arid saline soil regions and volcanic regions, containing fluorine More than 2 milligrams per liter of water is available, some even as high as 27 milligrams per liter, far exceeding the national drinking water hygienic standard fluorine concentration of no more than 0.5 to 1 mg/liter. For example, Inner Mongolia has about 4.8 million people living in high fluoride drinking water