Role of Cyanex-272 as an extractant for uranium in the determination of rare earths by ICP-AES

B. Rajeswari; B. Dhawale; T. Bangia; J. Mathur; A. Page

doi:10.1023/a:1021633920249

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 254: Issue 3

Role of Cyanex-272 as an extractant for uranium in the determination of rare earths by ICP-AES

Authors:

B. Rajeswari

B. Rajeswari Bhabha Atomic Research Centre Radiochemistry Division Trombay Mumbai 400 085 India

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B. Dhawale

B. Dhawale Bhabha Atomic Research Centre Radiochemistry Division Trombay Mumbai 400 085 India

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T. Bangia

T. Bangia Bhabha Atomic Research Centre Radiochemistry Division Trombay Mumbai 400 085 India

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J. Mathur

J. Mathur Bhabha Atomic Research Centre Radiochemistry Division Trombay Mumbai 400 085 India

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A. Page

A. Page Bhabha Atomic Research Centre Radiochemistry Division Trombay Mumbai 400 085 India

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Pages:: 479–483

Online Publication Date:: 02 Nov 2004

Publication Date:: 17 Dec 2002

Article Category:: Research Article

DOI:: https://doi.org/10.1023/a:1021633920249

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Abstract

A chemical separation procedure has been developed for the extraction of uranium from some of the crucially important rare earths using a novel extractant viz. Cyanex-272 (2,4,4-trimethyl pentyl phosphinic acid). The near total extraction of uranium and quantitative separation of rare earth elements has been validated using inductively coupled argon plasma - atomic emission spectrometry (ICP-AES). The recovery of some of the representative elements has been confirmed by radioactive tracer studies. The back extraction of uranium from the organic phase was carried out using a solution of 0.5M Na₂CO₃ which resulted in a near total recovery of uranium into the organic phase. These studies have enabled determination of sub ppm amounts of the analyte elements with a precision of 5% RSD utilizing prior chemical separation of rare earths from 1 g uranium samples in just three extractions with Cyanex-272.

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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)