The determination of strontium-90 in environmental and biological materials using DI-(2-ethylhexyl) phosphoric acid.
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Date
1967-12
Authors
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Journal ISSN
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Publisher
Australian Atomic Energy Commission
Abstract
A method is described in which strontium-90 is determined by solvent extraction of the yttrium-90 daughter. After a preliminary extraction of a hydrochloric acid solution of the sample by di-(2-ethylhexyl) phosphoric acid, yttrium-90 is allowed to return to equilibrium in the presence of yttrium carrier. A second extraction quantitatively separates the yttrium-90 which is subsequently stripped into concentrated hydrochloric acid. An extraction with Aliquat 336 is used to remove interfering radionuclides before the yttrium is finally precipitated and counted as the oxalate. Typical recovery is 85-90 per cent.
Description
Keywords
Environmental effects, Strontium 90, Environmental impacts, Solvent extraction, Yttrium 90
Citation
Flynn, W. W. (1968). The determination of strontium-90 in environmental and biological materials using di-(2-ethylhexyl) phosphoric acid (AAEC/TM421). Lucas Heights, NSW: Research Establishment, Australian Atomic Energy Commission.