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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。
Objective To establish a spatial distribution map of high arsenic water sources in Jiangsu Province by using GIS software and to provide basis for the formulation of prevention and control measures of endemic arsenism in Jiangsu Province. Methods Arsenic trioxide was screened by semi-quantitative method. The water samples> 0.03 mg / L were quantitatively analyzed. Based on the map of Jiangsu Province, the results were analyzed by Arcview GIS software. Results In 2005, a total of 9 427 samples of water samples were screened in Jiangsu Province. In the quantitative analysis, a total of 220 samples with arsenic content> 0.05 mg / L in water were mainly collected in Sihong, along the Huaihe River, Hongze Lake and Anhui Province County and Qionglai County. It was found by GIS technology that the distribution of high-arsenic water in Jiangsu Province had certain spatial characteristics. Conclusions There is a drinking water high arsenic area in Jiangsu Province, and all are concentrated in shallow hand-pressure well water.