郴州市地方性氟中毒改水降氟监测结果分析

目的　了解郴州市地方性氟中毒改水降氟效果 ,以及改水设施的管理和使用情况。方法　对郴州市所辖两个自然村的饮水氟含量、儿童氟斑牙患病率和成人氟骨症患病率进行了监测。结果　改水后两个自然村饮水氟含量分别为 0 .15mg/L和 0 .0 3mg L ;氟斑牙患病率分别为 4 2 .35 %和 31.2 5 % ,氟骨症患病率 2 4 .0 %和 2 8.3%。但由于人口增加 ,改水设施管理使用不善 ,致使居民中约 5 0 %的饮用水源未经改水降氟。结论　改水降氟后 ,保证饮用低氟水是防制此病的关键。

Surveillance results analysis on the water improvement to reduce fluoride of endemic fluorosis in Chenzhou

Objective To understand the effects of water improvement to reduce fluoride of endemic fluorosis in Chenzhou.Methods The fluoride content of drinking water,dental fluorosis and fluorosis of bone were deter mined;the morbidity rate of dental fluorosis and fluorosis of bone were investigated in two villages of Chenzhou. Results The fluoride content in drinking water averagely were 0.15mg/L and 0.03mg/L,that the prevalence rate of detlfluorosis were 42.35% and 31.24%,the fluorosis of bone 24.0% and 28.3% . Because of the increasing population,shortage of protection of water source and water facilities, the 50% drinking water of inhabitants were not improvement to reduce fluoride after water improvenment. Conclusion The key to prevent endemic fluorosis is to ensure the quality of drinking water.