Determination of dysprosium, europium, samarium and gadolinium in yttrium oxide of high purity by means of neutron activation analysis

I. Alimarin; Yu. Jakovlev; A. Miklishansky; N. Dogadkin; O. Stepanets

doi:10.1007/bf02530233

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 1: Issue 2

Determination of dysprosium, europium, samarium and gadolinium in yttrium oxide of high purity by means of neutron activation analysis

Authors:

I. Alimarin

I. Alimarin The “Vernadsky” Geochemical and Analytical Institute of the Soviet Academy of Sciences Moscow USSR

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Yu. Jakovlev

Yu. Jakovlev The “Vernadsky” Geochemical and Analytical Institute of the Soviet Academy of Sciences Moscow USSR

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A. Miklishansky

A. Miklishansky The “Vernadsky” Geochemical and Analytical Institute of the Soviet Academy of Sciences Moscow USSR

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N. Dogadkin

N. Dogadkin The “Vernadsky” Geochemical and Analytical Institute of the Soviet Academy of Sciences Moscow USSR

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O. Stepanets

O. Stepanets The “Vernadsky” Geochemical and Analytical Institute of the Soviet Academy of Sciences Moscow USSR

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Pages:: 139–145

Online Publication Date:: 09 Jan 2007

Publication Date:: 01 Mar 1968

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02530233

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Abstract

Radioactivation analysis is the only method which allows the determination of individual rare earth element impurities in rare earth elements of high purity. The determination of dysprosium, europium, samarium and gadolinium in yttrium oxide is complicated by the short half-life of¹⁶⁵Dy (138 min.) and by the difficulty of separating traces of these elements from the matrix. A chromatographic method has been developed, for the separation of traces of Dy, Eu, Sm and Gd from ytrium, on a column packed with anion exchangerAV-17, by means of elution with 0.1N and 0.3M solutions of EDTA-sodium salt, followed by the separation of the mixture of the rare earth impurities on a microcolumn of cation exchangerKU-2, using a 0.17M solution of ammonium α-hydroxyisobutyrate as the eluent. The sensitivity of the determination of Dy, in the case of irradiating 10 mg of Y₂O₃ with a flux of 1.2·10¹³ n·cm⁻²·sec⁻¹ for 5 min. was 1·10⁻⁷%; the corresponding values for Sm, Eu and Gd, when irradiating a 100 mg sample of Y₂O₃ for 20 hours with the same flux, were 2·10⁻⁷%, 1·10⁻⁸% and 5·10⁻⁶%, respectively.

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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)