安徽池州市2007年饮水氟含量调查

Analysis on the fluoride content of drinking water in 2007 in Chizhou city,Anhui province

目的全面了解和掌握安徽池州市辖区内地方性饮水氟含量及分布情况。方法对池州市所辖的原病区青阳县所有行政村,非病区县(区)的所有乡镇按东西南北中不同方位抽取5个行政村,每个行政村按东西南北中不同方位采集5口井水样;抽取改水工程水40个,每个县、区各抽10个,每个工程各采5份水样;调查各村户数及人口数、被采水样水源基本情况,检测水氟含量。结果池州市所辖的三县一区及九华山风景区抽取503个村、共检测水氟样品2515份。结果表明,全市行政村水氟均值为0.16mg/L、最大值为0.56mg/L。其中村最大值<0.5mg/L的村有490个,占97.42%;在0.5～1.0mg/L之间的有10个,占1.99%;1～1.5mg/L之间的有3个、占0.60%;没有>1.5的村。调查村的均值分布:<0.5mg/L有502个村、占99.80%;0.5～1mg/L有1个、占0.20%;≥1mg/L以上的村无。在检测的2515份饮用水样本中,氟含量<0.5mg/L的2501份,占99.44%;0.5～1.0mg/L之间的有11份,占0.44%;>1.0mg/L的有3份、占0.12%。共检测改水工程水样200份,所有水样均低于1.0mg/L。结论青阳县原病区降低了水氟含量、贵池区有3地新发水氟含量超标,池州全市98%以上村饮水氟含量均在正常限值内。

Objective To understand the distribution of fluoride content in local drinking water in Chizhou city.Methods All the administrative villages in Qingyang county,the original endemic regions,5 administrative villages in the non-endemic regions in different directions were selected.5 wells in different di-rections were selected to collect water samples in each village.40 water-ameliorate projects were selected and one project with five water samples.The number of household and population,the basic information of the water resource were investigated.The fluoride content of the water samples was detected.Results 503 ad-ministrative villages and 2515 water samples were detected in the five counties（districts）.The average fluoride content was 0.16mg/L,the maximum was 0.56mg/L.The content of fluoride was below 0.5mg/L in 490 villages,which accounting for 97.42%.10 villages were between 0.5 and 1 mg/L which accounting for 1.99%,and 3 villages between 1 and 1.5mg/L which accounting for 0.60%.Of the 2515 water samples,2501 samples were below 0.5mg/L which accounting for 99.80%,11 samples were between 0.5 and 1mg/L which accounting for 0.44%,and 3 samples were above 1mg/L which accounting for 0.12%.All the water samples from 40 water-ameliorate projects were below 1.0mg/L.Conclusion The water quality in the original en-demic regions in Qingyang county have been improved,and three places in Guichi that fluoride content sur-pass the standard,but more than 98% villages within normal limitation.