【摘要】 目的了解湖南省近20年燃煤污染型氟中毒流行规律及病区变化情况。方法抽查3个重病区县(市),分别对病区村和非病区村的尿、水、食物氟含量测定,并进行儿童氟斑牙调查。结果病区村8～12岁氟斑牙患病率66.36%,非病区氟斑牙患病率37.39%,辣椒样氟含量均值30.22mg/kg,尿氟含量中位数1.11mg/L(最大值为17.97mg/L)。7个原非病区中5个已构成病区村。结论调查县燃煤污染型氟中毒病区病情流行较为严重,病区呈扩大之势,氟源除室内空气污染外,还与食物(特别是辣椒等)受污染有关。更多还原

【Abstract】 Objective To find the epidemic rules of coal burn induced fluorosis and the changes of the epidemic areas in the past 20 years in Hunan Province. Methods Sampling investigation was used to investigate the dental fluorosis incidence among the children. Fluoride content was tested in casual urinary samples, and water and food samples in both the endemic and non-epidemic villages. Results The incidence of dental fluorosis of 8～12-year-old school-age chidren was 66.36% in the endemic fluorosis village, and 37.39% in the non-epidemic villages.The average content of fluoride in the capsicums was 30.22 mg/kg, the median of the urine fluoride was 1.11mg/L(the max was 17.97mg/L). Five villages were found to be new epidemic areas among 7 villages which were non-epidemic areas before in this investigation. Conclusions The epidemic of endemic fluorosis is severe in the investigated villages,and even becoming worse.The sources of fluoride pollution not only come from the air coal-burning pollution, but also the polluted food (especially the capsicum).更多还原