Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 4: Issue 1
Neutron activation analysis of rare earth impurities in metallic uranium
Authors:
I. Alimarin The Vernadski Institute of Geochemistry and Analytical Chemistry of the Academy of Science of the USSR Moscow USSR

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A. Miklishanskii The Vernadski Institute of Geochemistry and Analytical Chemistry of the Academy of Science of the USSR Moscow USSR

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Yu. Yakovlev The Vernadski Institute of Geochemistry and Analytical Chemistry of the Academy of Science of the USSR Moscow USSR

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Pages:
45–51
Online Publication Date:
12 Oct 2006
Publication Date:
01 Jan 1970
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02513636
Restricted access

Abstract  

A method with a sensitivity of 2·10−7 to 1·10−10% has been developed for determining Yb, Ho, Dy, Gd, Eu, Sm and La impurities in metallic uranium by means of neutron activation. The method is based on a preliminary chromatographic separation of the total amount of rare earth elements from uranium by passing the solution in sulphuric acid through KU-2 cation exchange resin and eluting the traces of uranium retained by the resin with a solution of ascorbic acid. The rare earth impurities are then eluted from the resin with 4–5N HCl, evaporated, and irradiated for 20 hours with a neutron flux of 1.2·1013 n·cm−2·sec−1. Subsequently the traces of the rare earth elements are co-precipitated with Fe(OH)3, dissolved in concentrated HCl and separated from the iron and other impurities by passing the solution through Dowex 1X8 anion exchange resin in the chloride form. The individual rare earth elements are then separated from each other using KU-2 cation exchange resin and a solution of ammonium α-hydroxyisobutyrate as the eluant.

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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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