通过对皖北地区31个集中式地下水饮用水源地深层地下水样品的采集和测试，运用描述性统计法和Piper三线图对地下水化学特征和分布进行了研究，分析了常规离子和微量元素之间的关系，并运用单因子质量评价和综合评价法开展了水质评价。研究结果表明：皖北地区集中式地下水饮用水源地深层地下水阴离子主要为 HCO3－，阳离子主要为Ca2＋和 Na＋，水化学类型主要以HCO3‐Ca和HCO3‐Na型为主；地下水环境质量单因子评价结果显示，影响本区地下水环境质量的指标为TDS（总溶解性固体），NO3－，F－，NO2－，NH4＋。综合评价结果显示，皖北地区集中式地下水饮用水源地深层地下水水质全部为Ⅱ类水和Ⅲ类水。%Thirty‐one water samples from northern Anhui Province were collected and analyzed . The descriptive statistics method and Piper trilinear diagrams were used to study the hydro‐chemical characteristics and distribution of groundwater in northern Anhui Province ,and the relationship between the main ions and the trace elements were studied .The single factor evaluation and integrated evaluation methods were used to evaluate the quality of the groundwater .The results show that the cations of the groundwater in this area are mainly Ca2+ and Na+ ,while the anions are mainly HCO3 - ,and the chemical types are mainly HCO3‐Ca and HCO3‐Na .The results of the single factor evaluation of the groundwater quality indicate the indicators include TDS (total dissolved solids) ,NO3 - ,F- ,NO2 - ,and NH4 + .The results of integrated environmental quality assessment show that the quality of the groundwater samples from this area are invariably of categories Ⅱ and Ⅲ .
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