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最近 ,饮水氟化人口调查所报告的各州饮水最适宜氟化物浓度与 5 0年代中期美国公共卫生署 (根据年平均日最高气温 ,全国分为六个温度区 )建议的饮水最适宜氟化物浓度 [由南部的佛罗里达和得克萨斯等州的0 .7mg/ L( 2 6 .3～ 32 .5℃ )至北部的缅因、密歇根等州的 1 .2 mg/ L (
Recently, the optimum fluoride concentration for drinking water in each state as reported by the Census of Fluoride in Drinking Water and the recommended optimum fluoride concentration for drinking water recommended by the U.S. Department of Public Health (based on the annual average daily maximum temperature and the country’s six temperature zones in the mid-1950s) [From 0.2 mg / L (26.3 to 32.5 ° C) in southern states of Florida and Texas to 1.2 mg / L (in Maine, North Carolina)