珲春盆地地下水水化学特征分析

Hydrochemical characteristics and correlation analysis of groundwater in Hunchun Basin

摘要: 为查明珲春盆地地下水化学特征, 对珲春盆地地下水进行了取样测试, 对测试结果采用Aquchm、SPSS和MAPGIS等软件进行了水化学特征分析。结果表明珲春盆地地下水中TFe、Mn²⁺和NO₃^-超标比较严重, 总体珲春河南区比珲春河北区水质差。地下水化学类型以HCO₃-CaMg为主, 部分地区为ClHCO₂、ClSO₄CO₃、SO₄ClHCO₃等型水。地下水中TDS、Ca²⁺、Cl^-、Mg²⁺、SO₄^2-和NO₃^-（以N记）相关性较高, 地下水化学演化过程主要是溶滤作用。

Abstract: In order to identify chemical characteristics of groundwater in Hunchun Basin, the authors collected groundwater samples for test and then used the Aquchm, SPSS and MapGis to analyze the hydrochemical characteristics and correlation of groundwater in Hunchun Basin. The results show that TFe, Mn²⁺ and NO₃^- exceed the standards seriously in groundwater of Hunchun Basin, and the groundwater quality of Henan district is on the whole poorer than that of Hebei district. The hydrochemical types of groundwater in Hunchun Basin are dominated by HCO₃-CaMg type, with ClHCO₂, ClSO₄HCO₃, and SO₄ClHCO₃ types in some areas. The correlation of TDS, Ca²⁺, Cl^-, Mg²⁺, SO₄^2-and NO₃^-(credited with N) in groundwater is high. The main process of the groundwater chemical evolution is the leaching effect.