Extraction of Cd(II) and Zn(II) with dialkylthiophosphinic acid and hexadentate nitrogen-donor ligand

被引：11
|
作者：
Takeshita, K [1 ]
Watanabe, K
Nakano, Y
Watanabe, M
机构：
[1] Tokyo Inst Technol, Dept Environm Chem & Engn, Yokohama, Kanagawa 2268502, Japan
[2] Japan Atom Energy Res Inst, Tokai, Ibaraki 3191195, Japan
来源：
CHEMISTRY LETTERS | 2003年 / 32卷 / 01期
关键词：
D O I：
10.1246/cl.2003.96
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The extraction equilibrium of Cd(II) and Zn(II) with a commercial extractant, Cyanex 301, and an aqueous complexing agent, TPEN [N,N,N',N'-tetrakis(2 -pyridylmethyl)- 1,2-ethane-diamine] was measured. When TPEN in amounts equimolar with heavy metal (Cd or Zn) was added in the aqueous solution, only the extraction of Zn was depressed. Then, the extraction constant of Cd was little changed and that of Zn was decreased to about 10(-4) times. TPEN acts as a strong masking agent for Zn.
引用
收藏
页码：96 / 97
页数：2
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