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地方性氟中毒是四川省危害最为严重的一种地方病,全省共有12个市、地、州的36个县383个村流行,其中以涪陵、万县、黔江、宜宾等地为高发区。病区海拔一般在1000～2500米,盛产含氟量极高的石煤。当地居民终年以煤作燃料,使用敞火或无炉盖,无烟囱的土炉灶取暖、煮饭、烧水、烘烤粮食,仅烤火取暖时间就达半年之久。据测定,病区室内空气含氟量普遍高于国家规定日平均允许浓
Endemic fluorosis is one of the most serious endemic diseases in Sichuan Province. The province has a total of 383 villages in 36 cities and counties in 12 cities, prefectures and prefectures. Among them, Fuling, Wanxian, Minjiang, and Yibin are high-risk areas. The altitude of the ward is generally between 1000 and 2500 meters, which is rich in stone coal with extremely high fluorine content. Local residents use coal as fuel all year round. They use open fire or no lids, and chimneyless earth stoves are used for heating, cooking, boiling water, and baking food. The heating time for cooking only for half a year is as long as six months. It has been determined that the indoor air fluoride content in the ward is generally higher than the national average allowable daily