Extraction of americium(III) and europium(III) with two open-chain crown ethers of amide type

被引：27

作者：

Wen, YH

Qin, Z

Liu, WS ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China

[2] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2001年 / 250卷 / 02期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1023/A:1017983211217

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The extraction of Am3+ and Eu3+ from aqueous picric acid solution by N, N'-dinaphthyl-N, N'-diphenyl-3,6-dioxaoctanediamide (L-I) and 1, 1'-(3, 6, 9-trioxaundecanedionyl)diphenothiazine (L-II) was investigated by a radioactive tracer technique. Extraction distribution ratios of Am3+ and Eu3+ have been measured as a function of pH, picric acid concentration, extractant concentration, diluent and temperature. The extraction of Am3+ is preferred to that of Eu3+, for both L-I and L-II, and the latter gives larger separation factor than the former. The equilibrium constants and thermodynamic parameters of extraction reactions were also calculated.

引用

页码：285 / 289

页数：5

共 24 条

[1] Solvent extraction of metal ions from nitric acid solution using N,N'-substituted malonamides. Experimental and crystallographic evidence for two mechanisms of extraction, metal complexation and ion-pair formation [J].