江苏省高砷水源筛查及其空间特征分析

目的应用地理信息系统(GIS)软件建立江苏省高砷水源空间分布图,为制定江苏省地方性砷中毒防治措施提供依据。方法采用半定量法进行水砷筛查,对>0.03 mg/L的水样进行定量分析,以江苏省地图为背景,用Arcview GIS软件对结果进行分析。结果2005年,江苏省共筛查水样9 427份,定量分析的样品中水砷含量>0.05mg/L的样品共220份,主要集中在沿淮河、洪泽湖并与安徽接壤的泗洪县和盱眙县;通过GIS技术发现江苏省高砷水源分布具有一定空间特征。结论江苏省存在饮水高砷地区,且全部集中在浅层手压井水中。

Screening and spatial character of high arsenic-containing drinking water source in Jiangsu province

Objective To describe the distribution of the drinking water source with high levels of arsenic in Jiangsu province,and to provide evidence for control and prevention of endemic arsenism.Methods The water arsenic was screened with half-quantitative method of fast test-kit.The samples with level of arsenic ≥0.03mg/L were sent to Jiangsu Provincial Center for Disease Control and Prevention for quantitative analysis.The data were analyzed with Arcview GIS 3.2 linked to electronic maps of Jiangsu province.Results The total number of screened samples was 9427 and the number of samples with the level of arsenic ≥0.05 mg/L was 220 ,which mainly distributed in areas of Sihong and Xuyi county along Huaihe River, Hongze Lake, and Anhui province.The distribution of drinking water source with high level of arsenic in Jiangsu province has spatial characters analyzed by Arcview GIS 3.2 software.Conclusion There are certain areas with high level arsenic in drinking water in Jiangsu province,and they are mainly distributed in shallow wells.