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本文测定了1-苯基-3-甲基-4-苯甲酰基吡唑啉酮-5(HPZL)-Zn~(2+)萃取体系在不同溶剂中的萃取平衡常数以及其他几个协萃体系的协萃平衡常数,结果列于表4～8.证实惰性溶剂对萃取平衡常数的影响可以近似地用正规溶液理论解释,非惰性溶剂的影响则和它们的配位作用有关.对于协萃体系,协萃平衡常数β_(n0k)~0随溶剂不同有很大变化,其中中性协萃剂活度系数的变化起重要作用.
In this paper, the extraction equilibrium constants of 1-phenyl-3-methyl-4-benzoylpyrazolone-5 (HPZL) -Zn 2+ extraction system in different solvents were determined, The results are shown in Tables 4 to 8. It was confirmed that the influence of inert solvents on the equilibrium constant of extraction can be approximately explained by the theory of normal solution and the influence of non-inert solvents is related to their coordination. The equilibrium constant β_ (n0k) ~ 0 varies greatly with the solvent, and the activity coefficient of the neutral extractant plays an important role.