Effect of ionic liquids on the extraction of americium by diphenyl (dibutyl) carbamoylmethyl phosphine oxide in dichloroethane from nitric acid solutions

被引：22
|
作者：
Pribylova, G. A. [1 ]
Smirnov, I. V. [2 ]
Novikov, A. P. [1 ]
机构：
[1] Russian Acad Sci, Vernadsky Inst Geochem & Analyt Chem, Moscow 119991, Russia
[2] VG Khlopin Radium Inst, St Petersburg 194021, Russia
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2013年 / 295卷 / 01期
关键词：
Liquid-liquid extraction; Actinides; Americium; Room temperature ionic liquids; Diphenyl (dibutyl) carbamoylmethylphosphine oxide;
D O I：
10.1007/s10967-012-2220-1
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The present paper demonstrates that room temperature ionic liquids (RTIL) added at 1-5 wt% to a diphenyl (dibutyl) carbamoylmethylphosphine oxide (Ph2Bu2) solution increase the extraction coefficients of americium from nitric acid by more than two orders of magnitude. Moreover, the use of the RTIL-1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide makes the extraction possible even from 8 M HNO3. This is an important attribute of such extraction system from the point of its possible application for radiochemical analysis of technological samples and environmental solutions, since many methods are based on transferring the solid samples into an 8 M HNO3 solution. The extraction data obtained revealed that three Ph2Bu2 ligands are included into the coordination sphere of americium, two of which represent a compound with the nitrate anion and one with the RTIL anion.
引用
收藏
页码：83 / 87
页数：5
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