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中文摘要：
目的调查地方性砷中毒（简称地砷病）病区饮用水中形态砷化物水平，为地砷病防治和科研工作提供科学依据。方法在山西、安徽省和内蒙古自治区地砷病病区采集高砷井水水样，高压液相色谱-氢化物发生原子荧光分光光度法测定各种形态砷化物。结果地砷病病区饮用水的形态砷化物主要是3价的无机砷（iAs^Ⅲ）和5价的无机砷（iAs^Ⅴ），含有机砷量很低。安徽省和内蒙古自治区水样中iAs^Ⅲ明显高于iAs^Ⅴ，分别占总砷的85．2％（297．07μg／L）和73．4％（103．45μg／L），97％（27份）和80％（48份）的受检水样中iAs“占含总砷量的60％以上；山西省水样iAs^Ⅲ和iAs^Ⅴ水平差别不明显。结论不同地砷病病区水体形态砷化物水平和分布存在差异，在对饮用水中总砷测定的同时，有必要测定和分析形态砷化物iAs^Ⅲ和iAs^Ⅴ的水平。
英文摘要：
Objective To investigate the arsenic speciation in drinking water in endemic arsenism areas of China. Methods High arsenic well water were collected and determined by HPLC-HG-AFS. Results Arsenide in drinking water in the endemic arsenism areas of China mainly presented as iAs^Ⅲand iAs^Ⅴ, while the levels of organic arsenic were very low. In Anhui Province and Inner Mongolia, iAs! levels, respectively accounting for 85.2% （297.07 μg/L） and 73.4% （ 103.45 μg/L） of total arsenium, were significantly higher than iAs v ; 97% （n = 27） and 80%（n = 48） of the collected water samples had iAs! more than 60% of the total arsenium; However, no significance were found between iAs^Ⅲand iAs^Ⅴ in Shanxi Province. Conclusion Arsenide in drinking water exists and distributes in different forms among the endemic arsenism areas of China, thus it is necessary to determine arsenic valence, either iAs^Ⅲ or iAs^Ⅴ, while assessing the total arsenic concentrations.
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