• 关键词：反应途径模拟  盐效应  CO₂分压  潜水主要离子含量

• 基金项目：

• 蔡绪贻
• 北京大学城市与环境学系,100871

• 陈静生
• 北京大学城市与环境学系,100871

• 摘要：近三十年来,由于污染,华北城市地区潜水中主要离子如Ca²⁺、Mg²⁺等含量逐年升高,影响工农业生产,本文采用反应途径模拟的方法对上述情况进行了研究,作者共设计了7种反应途径,分别模拟了含碳酸盐或硅酸盐、铝硅酸盐较丰富地区地下水中盐效应和CO₂分压升高对其主要离子含量的影响。模拟过程中考虑了22种化学反应,33种存在形式(包括气体、固体).结果表明,盐效应和CO₂分压升高对地下水中Ca²⁺、Mg²⁺浓度的升高有明显影响,上述两种因素对Ca、Mg硅酸盐、铝硅酸盐溶解的影响更为明显。

• Abstract：In recent thirty years,the concentrations of major ions such as Ca,Mg in groundwaterin urban aquifer have been increasing continuously,which has harmful effects on agricultureand industry.The phenomena were studied by employing reaction path simulation models.Results show that salt effect and the increase in have obvious effect on the increase inCa²⁺,Mg²⁺ concetrations in groundwater,The two factors even have more stronger effectson the dissolution of silicate and aluminosilicate containing Ca,Mg than on others.

• Key words：reaction path simulations  salt effect  CO₂ partial pressure  major ions  aquifer

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