【摘要】 目的　为了查清西宁北川地区部分人群出现慢性氟中毒症状的原因 ,确定致病途径。方法　对西宁北川地区部分人群氟化物水平、环境、饮水和食物中的氟含量进行了测定。按国家规定的统一方法对随机抽取的区内不同年龄组人群调查氟斑牙患病情况 ( 3 3 67名 )和进行尿氟 ( 4 0 69名 )测定 ,并分析其与当地环境氟水平之间的关系。结果　氟班牙患病率达5 4 68% ,尿氟浓度为 ( 1 5 1± 1 12 )mg/L。甘蓝、小麦、大气和土壤含氟量分别超过相应的国家标准值或背景值 7 6、1 5、1 4、0 2 7倍。结论　工业氟污染是引起该区人群慢性氟中毒的主要原因更多还原

【Abstract】 Objective] To explore the prevalence and epidemic factors of chronic fluoride poisoning among population in Beichuan industrial area. [Methods] The level of fluoride among population and the fluoride concentration in the environment, drinking water and food and were detected. People of different ages were randomly selected, the dental fluorosis condition (3 367 cases) and urine fluoride (4069 cases) were detected. Analysis was made on the relationship between chronic fluoride poisoning and fluoride level in the environment. [Results] The morbidity of dental fluorosis was 54.68%, the concentration of urine fluoride was (1.51±1.12) mg/L. The concentrations of fluoride in cabbage, wheat, air and soil were 7.6, 1.5, 1.4 and 0.27 times of the national standard. [Conclusion] Industrial fluoride pollution is the main cause of chronic fluorosis among population in this area.更多还原