安徽省饮用水中氟化物含量及健康风险分析

分析了安徽省不同地区231个随机样点饮用水中氟化物含量及其健康风险.结果表明,饮用水中氟化物含量为0.12~1.94mg/L,平均0.57mg/L,其中淮北平原区(0.85mg/L)>大别山地区(0.42mg/L)≈江淮丘陵区(0.41mg/L)>沿江平原区(0.34 mg/L)>皖南山区(0.24mg/L). 61.85%的饮用水中氟化物含量小于0.50mg/L,24.89%在0.50~1.0mg/L之间,12.05%在1.01~1.50mg/L之间,1.21%高于1.5mg/L.不同地区居民每人每天饮水摄氟总量为0.26~4.3mg (以2.2L饮水量计).江淮丘陵、皖西大别山、沿江平原和皖南山区饮水摄氟总量全部低于我国生活饮用水卫生标准推荐的最低限量,应采取饮茶或饮水加氟措施增加摄氟量,而在淮北平原区亳州市部分样点氟化物摄入量超过了我国生活饮用水卫生标准推荐的最高限量,宜采取降氟饮水方法减少人体摄氟量.

Fluoride levels and its implications for health risk in drinking water in Anhui Province

Drinking water samples from 231 sites in Anhui Province of China were collected at random and its fluoride contents were investigated.Results indicated that the fluoride concentrations in drinking water ranged from 0.1 2 to1.94mg/L with the mean value of 0.57mg/L.The order of the mean fluoride concentrations in drinking water was as follows:Hnai-bei plain region(0.85mg/L)>Da-bie-shah mountainous region(0.42mg/L)≈Jiang-huai hill region (0.41mg/L)>plain along the Yangtze River(0.34mg/L)>Southern Anhui mountainous Region(0.24mg/L).The fluoride concentration in 61.85% of samples were less than 0.50mg/L,24.89% of the samples were 0.51～1.0mg/L,12.05% of the samples were 1.0～1.5mg/L.and only 1.21% of them were higher than 1.5 mg/L.The total fluoride intake from drinking water by local residents ranged from 0.26 to 4.3 mg per day supposing the consumption of 2.2 L water per day.Therefore,management of drinking water should be concerned to increase the fluoride in drinking water in Jiang-huai hill region,Da-bie-shan mountainous region,plain along the Yangtze River region and Southern Anhui mountainous region for controlling dental caries,and to reduce the fluoride in drinking water in Hnai-bei plain region for decreasing endemic fluorosis.