Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 279: Issue 3
Extractive distribution of microamounts of europium and americium in the two phase water — HCl — nitrobenzene — N,N,N′,N′-tetraethyl-2,6-dipicolinamide — hydrogen dicarbollylcobaltate system
Authors: E. Makrlík 1 , P. Vaňura 2 , P. Selucký 3 , V. Babain 4 , and I. Smirnov 4
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  • 1 University of West Bohemia Faculty of Applied Sciences Husova 11 306 14 Pilsen Czech Republic
  • 2 Institute of Chemical Technology Prague, Technická 5 166 28 Prague Czech Republic
  • 3 Nuclear Research Institute 250 68 Řež Czech Republic
  • 4 Research and Production Association Khlopin Radium Institute St. Petersburg Russia
DOI:
https://doi.org/10.1007/s10967-008-7375-4
Page Count:
743–747
Publication Date:
01 Mar 2009
Online Publication Date:
31 Jan 2009
Article Category:
Research Article
Restricted access

Abstract  

Extraction of microamounts of europium and americium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B−) in the presence of N,N,N′,N′-tetraethyl-2,6-dipicolinamide (TEtDPA, L) has been investigated. The equilibrium data have been explained assuming that the cations HL+, HL23+, ML23+ and ML33+ (M3+ = Eu3+, Am3+) are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined. It has been found that the stability constants of the corresponding complexes EuLn,org3+ and AmLn,org3+, where n = 2, 3 and L is TEtDPA, in the mentioned medium are comparable.

Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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