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本文研究了反萃剂、料液 HCl浓度、温度、 N_(235)浓度对 N_(235)二甲苯醋酸铵大块液膜体系迁移 Cd~(2＋)的影响。当膜相添加不同浓度的表面活性剂 Span 80时，测定了膜料液界面的萃取反应表观速率常数 k_1和膜反萃相界面的反萃取表观速率常数 k_2，并进行了相应的动力学分析。实验证明， Cd~(2＋)的迁移可用两个连续单向不可逆的一级反应来描述。在本文的液膜体系中， Cd2＋的跨膜迁移和 H＋的同向迁移耦合。
In this paper, the effects of stripping agent, HCl concentration, temperature and N (235) concentration on the migration of Cd ~ (2+) in liquid bulk of N_ (235) xylene acetate liquid membrane system were studied. When different concentrations of surfactant Span 80 were added to the membrane phase, the apparent rate constant k 1 of the extraction reaction at the membrane liquid interface and the apparent rate constant k 2 of the back-extraction at the film-stripping interface were measured and the corresponding kinetics analysis. Experiments show that Cd 2+ transfer can be described by two consecutive unidirectional irreversible first-order reactions. In this paper, the transmembrane migration of Cd2 + and the co-migration of H + are coupled in the liquid membrane system.