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目的查清土默特左旗高砷村庄分布及居民的砷中毒患病情况。方法生活饮用水砷浓度测定采用二乙氨二硫代甲酸银光光度法,居民砷中毒病情调查依据《地方性砷中毒诊断标准》WS/T211-2001进行。结果352个自然村生活饮用水砷浓度>0.05mg/L的有66个自然村,超标率为18.75%,涉及人口50995人;居民病情调查人数11507人,砷中毒病例3046人,患病率26.47%,其中以皮肤色素脱失表现为主,其次是皮肤角化,且有随水砷浓度和年龄的增加而增高的趋势。结论土默特左旗饮水型地方性砷中毒流行现状依然很严峻。
Objective To investigate the distribution of high arsenic in Tumotezuoqi County and the prevalence of arsenic poisoning among residents. Methods Arsenic concentrations in drinking water were determined by silver dithiocarbamate dithiocarbamate spectrophotometry. The arsenic poisoning of residents was investigated according to the diagnostic criteria of endemic arsenism WS / T211-2001. Results There were 66 natural villages with drinking water with arsenic concentration> 0.05mg / L in 352 natural villages. The exceeding standard rate was 18.75%, involving 50,995 people. The number of residents was 11,507 and the number of arsenic poisoning cases was 3046, with a prevalence of 26.47% Among them, skin depigmentation was the main manifestation, followed by keratosis of the skin, and increased with the increase of water arsenic concentration and age. Conclusion The prevalence of endemic arsenism in Tumotezuoqi drinking water is still very serious.