地下水是河南省重要的水资源。采用模糊评价法、国际F值法、一票否决法对河南浅层地下水进行评价。选用Fe、Mn、Cu、Zn、Hg、As、Cd、Cr6+、Pb、Ni等19个指标,按照地下水质量标准GB/T14848-93进行评价。通过对比分析典型地下水样超标组分与各种评价结果的一致性,统计分析各种评价结果的分布特征,确定了适用于河南地下水质量评价的方法是模糊评判法。评价结果表明:河南省浅层地下水中,Ⅱ类水分布面积占全省面积的54%,V类水分布面积占全省总面积的4%;控制河南地下水的关键指标为SO4^2-、Cl^-、Fe、Mn,溶解总固体、总硬度,NO3^-、NO2^-。文章还对地下水水质的成因作了分析。
Groundwater is an important water resource in Henan Province. 19 items were chosen as the evaluation factors, which are Fe, Mn, Cu ,Zn, Hg, As, Cd, Cr6^+ , Pb, Ni and so on. Based on the monitoring data, the groundwater environmental quality in He' nan Province was analyzed by the way of fuzzy comprehensive evaluation,method of "voting down by only one vote" and international F value method. On the basis of aforementioned work, the evaluation results showed that the phreatic water in He' nan Province is mainly in Class Ⅱ of national groundwater quality standard. 54 percent and 4 percent of water in total He' nan Province area belong to Class Ⅱ and Class Ⅲ, respectively. The factors causing the pollution of groundwater were also studied and the key items restricted groundwater quality were SO4^2- , Cl^- , Fe, Mn, total dissolved solids(TDS) ,total hardness of water, NO3^- and NO2^-. Finally the causes of formation of water quality were briefly analyzed.