Back-extraction of uranium(VI) from organophosphoric acid with hydrazine carbonate

被引：8
|
作者：
Watanabe, M [1 ]
Tatsugae, R
Shirahashi, K
Morita, Y
Kubota, M
机构：
[1] Japan Atom Energy Res Inst, Dept Mat Sci, Tokai, Ibaraki 3191195, Japan
[2] Ishikawajima Harima Heavy Ind Co Ltd, Isogo Ku, Yokohama, Kanagawa 2358501, Japan
[3] Japan Atom Energy Res Inst, Nucl Safety Res Ctr, Dept Safety Res Tech Support, Tokai, Ibaraki 3191195, Japan
[4] Res Org Informat Sci & Technol, Tokai, Ibaraki 3191195, Japan
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2001年 / 250卷 / 02期
关键词：
Physical Chemistry; Inorganic Chemistry; Uranium; Phosphoric Acid; Hydrazine;
D O I：
10.1023/A:1017980520304
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The back-extraction of uranium(VI) from di(2-ethylhexyl)phosphoric acid (HDEHP) and diisodecylphosphoric acid (DIDPA) was studied by using hydrazine carbonate as back-extractant. U(Vl) was back-extracted from n-dodecane solutions of 0.5M HDEHP - 0.2M TBP and 0.5M DIDPA UM TBP by hydrazine carbonate. The distribution ratios were decreased with an increase of hydrazine carbonate concentration. The back-extraction equilibria were expressed by slope analysis in consideration of neutralization between the extractant (DIDPA, HDEHP) and hydrazine carbonate, which occurred quantitatively during the back-extraction.
引用
收藏
页码：377 / 379
页数：3
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