研究了仲壬基苯氧基乙酸在盐酸介质中对 Eu3+ ,Zn2 + ,Cd2 + ,Co2 + ,Ni2 + ,Cu2 + ,Mn2 + ,Mg2 + 等金属离子的萃取行为 ,考察了平衡水相酸度 ,萃取剂浓度等因素对萃取平衡的影响 ,得到了萃取平衡方程 .根据金属离子之间的分离系数值可看出 ,通过控制适当的酸度 ,有可能分离 Eu3+中通常伴生的一些金属离子 ,同时还可能达到 Co2 +与 Ni2 + ,Zn2 +与 Cd2 +等金属离子之间的相互分离 The extraction behavior of Eu3 +, Zn2 +, Cd2 +, Co2 +, Ni2 +, Cu2 +, Mn2 +, Mg2 + and other metal ions in the medium of hydrochloric acid was studied. The acidity, Extractant concentration and other factors on the extraction equilibrium, the extraction equilibrium equation was obtained.Based on the separation coefficient between the metal ions can be seen by controlling the appropriate acidity, it is possible to separate the Eu3 + usually associated with some metal ions, but also It is possible to achieve mutual separation between Co2 + and metal ions such as Ni2 +, Zn2 + and Cd2 +