Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 258: Issue 3
Synergistic solvent extraction of Eu, Sr and Cs into chlorobenzene solutions of the three conformers of tetrathiocalixarene and dicarbollide
Authors:
M. Kyrš Nuclear Research Institute 25068 Řež Czech Republic

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K. Svoboda Nuclear Research Institute 25068 Řež Czech Republic

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P. Lhoták Prague Institute of Chemical Technology Department of Organic Chemistry 166 28 Prague Czech Republic

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J. Alexová Nuclear Research Institute 25068 Řež Czech Republic

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Pages:
497–509
Online Publication Date:
01 Nov 2004
Publication Date:
17 Dec 2003
Article Category:
Research Article
DOI:
https://doi.org/10.1023/b:jrnc.0000011743.63807.9e
Restricted access

Abstract  

Solvent extraction of several long-lived fission products from diluted nitric acid in pronounced synergistic systems involving dicarbollide and conformers of a specific thiacalix[n]arene were investigated using mainly chlorobenzene as the diluent. The following factors were experimentally investigated: molar ratio of the two extractants, total extractants concentration, aqueous acidity, nature of the mineral acid used, relative phase volumes, repeated extractions and metal concentration. Data are given on the rather slow kinetics of extraction and stripping, limited chemical stability of the extractants, selectivity and interference of foreign metals. The three different conformers of the basic compound with identical chemical composition exhibit very differing extraction properties. The plots of distribution ratios of all metals tested versus the varying concentration of one extractant keeping the concentration of the other extractant constant invariably exhibit maxima, interpreted as the result of an existence of several extracted species in the extract. Suggestions are given concerning possible practical applications of two of the conformers studied.

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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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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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