中文摘要：

在陕北风沙滩地区采集了769个浅层地下水样,分析了水样的pH、总硬度、溶解性总固体、氨氮、硝酸盐、亚硝酸盐、氟化物、氯化物、硫酸盐、铁和锰等。利用单因子污染评价法和内梅罗综合污染评价法对研究区地下水水质进行了评价,运用MapGis、Surfer绘图软件绘制了水质综合评价图。结果表明,研究区浅层地下水中所分析的指标均不同程度地超标,尤其是＂三氮＂污染最为严重,其次是铁和锰,其他指标污染相对较轻;整个区域浅层地下水69%为良好区、22%为较好区、8.61%为较差区、0.39为极差区。

英文摘要：

769 shallow groundwater samples were collected from the blown- sand region of northern Shaanxi Province. Afterwards,pH,total hardness,total dissolved solids,ammonia nitrogen,nitrate,nitrite,fluoride,chloride,sulfate,iron and manganese of groundwater were analyzed. The quality of groundwater was also assessed by single- and integrated- factors pollution assessment. Comprehensive evaluation map of the water quality was drawn using MapGis and Surfer. The results showed that all items analyzed were higher than Environmental Quality of Groundwater in different degrees,especially for ammonia nitrogen,nitrate and nitrite. The analysis of water quality showed that ammonia nitrogen,nitrate and nitrite were belonged to severe pollution,iron and manganese were belonged heavy pollution,and other items were belonged slight pollution. Most of the study areas were good,but some districts were bad in water quality.