宁夏银川市西夏区农村高砷水源筛查

目的：做好我区地方性砷中毒项目调查与防治工作，筛查高砷水源。方法：采用二乙氨基二硫代甲酸银分光光度法。结果：400份水样中感官超标的56份，不合格率14．0％，主要表现在浊度、色度，水砷〉0．05mg／L的水样4份，不合格率1．0％。结论：不合格的水样可能与宁夏的地貌、土质原因、水井深度较浅、过滤措施不当等几个方面的原因有关。

Screening of country headwaters with high - arsenic in Xixia District of Yinchuan

Objective:To do a good job about parochial arsenic to xicosis item swrvey and its preventive tusk to filtrate the high-arsenic water source.Methods:Silver diethyldithiocarbamate spectrophotometric method was used.Results:The number of sensory-organ superscale water sample in 400 shares was 56.The disqualification was 14.0%.The number of arsenic in water which was more than 0.05 mg/L was 4,the disquahfication was 1.0%.Conclusion:The unqhalified water sample may be severely influnced by the physiognorny,the terrene,the lower well and the unreasonable filtration measure.