中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (3): 58-61.

• 研究论文 • 上一篇    下一篇

稀释剂对二(2－乙基己基)磷酸萃取镧(Ⅲ)的影响

柴金岭, 李文华   

  1. 山东师范大学化学系 济南 250014
  • 收稿日期:1993-04-08 修回日期:1994-01-29 出版日期:1994-06-10 发布日期:1994-06-10

Diluent Effect on the Extraction of Lanthanum(Ⅲ) by HDEHP from Nitrate Solution

Chai Jinling, Li Wenhua   

  1. Department of Chemistry, Shandong Normal University, Jinan 250014
  • Received:1993-04-08 Revised:1994-01-29 Published:1994-06-10 Online:1994-06-10

PDF

447

被引次数

3

摘要： 二(2-乙基己基)磷酸从硝酸介质中对La(Ⅲ)的萃取对不同稀释剂其平衡常数为:正己烷>环己烷>四氯化碳>甲苯>氯仿>甲异丁酮。萃取平衡常数与稀释剂的极性参数S间呈线性关系。

关键词: 溶剂萃取, 镧, 二(2－乙基己基)磷酸, 稀释剂效应

Abstract: The distribution equilibria of La(Ⅲ)between aqueous nitrate solution and HDEHP in the presence of various diltuents have been studied at 298K,The extraction equilibrium constants decrease in the following order of diluents:n-hexane,cyclohexane,carbon tetrachloride,toluene,chloroform,methyl isobutyl ketone.Diluent effect on the equilibrium constants is discussed.

Key words: extraction, lanthanum, di-(2-ethylhexyl)phosphate, diluent effect

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