Extraction of Am(III), U(VI), and Pu(IV) from HCl solutions with diphenyl(dibutylcarbamoylmethyl)phosphine oxide

被引：5
作者：
Litvina M.N. [1 ]
Chmutova M.K. [1 ]
Kulyako Yu.M. [1 ]
Myasoedov B.F. [1 ]
机构：
[1] Vernadsky Inst. Geochem. Analyt. C., Russian Academy of Sciences, Moscow
来源：
Radiochemistry | 2004年 / 46卷 / 1期
基金：
俄罗斯基础研究基金会;
关键词：
Oxide; Physical Chemistry; Inorganic Chemistry; Acid Concentration; Phosphine;
D O I：
10.1023/B:RACH.0000024633.68095.4f
中图分类号：
学科分类号：
摘要：
Extraction of Am(III), U(VI), and Pu(IV) from HCl solutions with solutions of diphenyl(dibutylcarbamoylmethyl)phosphine oxide in dichloroethane and m-nitrobenzotrifluoride was studied. The curves of the Am(III) and U(VI) extraction as a function of the acid concentration pass through a minimum at [HCl] = 1 M, followed by a steep ascent at the acid concentration increased further. The logarithmic dependences of the distribution factors on the extractant concentration are nonlinear, with the slope of the upper portions close to 2 for Am(III) and 1 for U(VI). Pu(IV) is extracted noticeably worse than U(VI). A significant anomalous aryl strengthening effect is observed in HCl solutions.
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页码：41 / 43
页数：2
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