中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (1): 80-82.

• 研究论文 • 上一篇    下一篇

液膜法分离钴和镍

李龙泉, 王成, 张国辉, 李亚栋   

  1. 中国科学技术大学化学系 合肥 230026
  • 收稿日期:1997-05-15 修回日期:1997-09-15 出版日期:1998-02-10 发布日期:1998-02-10

Separation of Trace Cobalt and Nickel in Aqueous Solution with Emulsive Liquid Membrane

Li Longquan, Wang Cheng, Zhang Guohui, Li Yadong   

  1. Department of Chemistry, China University of Science and Technology, Hefei 230026
  • Received:1997-05-15 Revised:1997-09-15 Published:1998-02-10 Online:1998-02-10

PDF

413

被引次数

32 | 2

摘要： 钴、镍的分离一直受到关注,人们先后利用离子交换法[1]、色谱法[2]、萃取法[3]等方法对它们在水溶液中共存时进行了分离.本文利用液膜法将共存的微量钻、镍一步分离开,同时富集了钴离子.利用液膜富集和分离钴、镍,大量工作是针对它们的富集;对其实施分离,报道甚少[4.5],且分离效果不够满意.将EDTA作为掩蔽剂应用于钴、镍的分离,尚未见报道.

关键词: 钴, 镍, 分离, 液膜, EDTA

Abstract: EDTA was used to complex nickel to make the separation of trace amount of nick-el and cobalt possible by an emulsion liquid membrane containing P507-Span80-liquid paraf-fin-kerosene-HCl.Good results were obtained under conditions: pH = 4.6~5.2, ratio ofemulsion to solution=0.1, and separation time ca.20 min.Separated cobalt and nickel couldbe easily determined by spectrophotometer.Under these conditions the recoveries of cobaltand nickel were more than 95% and 13%, respectively, the coefficient of separation was over130.Membrane phase could be reused repeatedly.Among the coexisting ions, only Ca2+ and Cu2+ affect the separation.

Key words: colbalt, nickel, separation, liquid membrane, EDTA

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