An emulsion membrane extraction of strontium and its separation from calcium utilizing crowns and picric acid

V. Mikulaj; J. Hlatky; L. Vašekova

doi:10.1007/bf02039392

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 101: Issue 1

An emulsion membrane extraction of strontium and its separation from calcium utilizing crowns and picric acid

Authors:

V. Mikulaj

V. Mikulaj Comenius' University Department of Nuclear Chemistry, Fakulty of Science Mlynska dolina CH-1 842 15 Bratislava (Czechoslovakia)

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J. Hlatky

J. Hlatky Comenius' University Department of Nuclear Chemistry, Fakulty of Science Mlynska dolina CH-1 842 15 Bratislava (Czechoslovakia)

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, and

L. Vašekova

L. Vašekova Comenius' University Department of Nuclear Chemistry, Fakulty of Science Mlynska dolina CH-1 842 15 Bratislava (Czechoslovakia)

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Pages:: 51–57

Online Publication Date:: 13 Aug 2005

Publication Date:: 17 Sep 1986

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02039392

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Abstract

The selective separation ability of the cyclic crowns, known for liquid-liquid extraction, e.g. alkali metals, is found to be effective for emulsion membrane extraction. 18-C-6, DB-18-C-6, DC-18-C-6 crowns were used as carriers. The co-transport of the ionic pair SrL²⁺. 2A through the membrane has been studied. Calcium was considered as a main competing ion. Even in the case of 20-fold preconcentration, there have been found conditions under which the pertraction process can reach Sr/Ca separation factors of about 500 and the yield of strontium is high (95–98%). The presence of calcium up to 1000-fold excess has no influence on the yield of strontium (1.10^–5M). The calcium content in the isolated emulsion was caused by second emulsification of the outer solution. The influence of potassium on strontium pertraction has been studied and some transport data of Cs and Y have been obtained.

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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)