将电解质溶液的局部组成模型中的粒子间作用能看作常数 ,与温度无关 ,使得模型参数与温度成简单的倒数关系 ,利用 2 5℃的模型参数值 ,关联计算了在不同温度下NaCl KCl H2 O三元体系溶解度数据 ,结果表明在 0～ 1 2 0℃的范围内 ,关联计算结果很好 ,解决了局部组成模型在计算电解质溶液溶解度时缺乏其他温度下模型参数的问题 The interaction between the particles in the local compositional model of the electrolyte solution can be regarded as a constant and has nothing to do with the temperature, making the model parameters and the temperature into a simple reciprocal relationship. Using the model parameter values ​​of 25 ℃, the relationship between NaCl KCl H 2 O ternary system. The experimental results show that the correlation calculation is very good in the range of 0 ~ 120 ℃, and the problem of lack of model parameters at other temperatures in local compositional model is solved