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本文提出一个关联三元溶液热力学性质的半经验关联式,可用来关联溶液的析光指数、密度、粘度及表面张力等,较前人所提式子为优。当用来关联三元溶液的析光指数与密度时可用以分析三元溶液的浓度,较气相色谱准确。本文着重讨论对析光指数和密度的关联及其在三元汽液平衡测定中的应用。当溶液遵守Lorentz-Lorenz方程时还可用该式及半经验关联式来分析浓度,对存在的误差进行分析。测定了1,2-二氯乙烷、乙醇、正已烷系在760mmHg柱下的汽液平衡,用本文所提分析方法分析浓度,测定结果与其它推算方法的结果进行比较。
In this paper, we propose a semi-empirical correlation for the thermodynamic properties of ternary solutions, which can be used to correlate the analysis index, density, viscosity and surface tension of solutions. When used to correlate the optical resolution and density of the ternary solution, the concentration of the ternary solution can be analyzed to be more accurate than gas chromatography. This article focuses on the correlation between the optical resolution index and density and its application in the determination of ternary vapor-liquid equilibrium. When the solution complies with the Lorentz-Lorenz equation, the concentration and the semi-empirical correlation can also be used to analyze the concentration and analyze the error present. The vapor-liquid equilibrium of 1,2-dichloroethane, ethanol and n-hexane at 760mmHg was measured. The concentration of 1,2-dichloroethane, ethanol and n-hexane were determined by the analytical method presented in this paper. The results were compared with those of other methods.