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络合物广泛存在于地下水中，研究地下水化学成分形成特征、水岩相互作用以及水中各组分浓度变化迁移规律时，必须考虑水中络合物影响。依据化学平衡原理和化学热力学，建立起一般地下水中络合物的化学模型，利用计算机模拟求出各个组分和络合物的浓度，使用本方法对大同麻峪口地区水样进行了计算，取得了满意结果。
Complex exists widely in groundwater. When studying the formation characteristics of chemical composition of groundwater, the interaction between water and rock and the change of concentration of each component in water, the complex of water must be considered. Based on the principle of chemical equilibrium and chemical thermodynamics, the chemical model of general groundwater complexes was established. The concentration of each component and complex was calculated by computer simulation. The water samples of MaYukou district in Datong were calculated. Satisfactory results have been achieved.