Simple determination of 90Sr in highly radioactive liquid waste by alkaline precipitation separation/liquid scintillation counting technique

Takashi Ohnuma, Naoki Surugaya, Toshiaki Hiyama

Research output: Contribution to journalArticle

Abstract

An analytical method with a liquid scintillation counting technique for the determination of 90Sr in the presence of other elements was developed by deriving a calculation formula to remove their influences. The analysis of 90Sr has been performed using the radioactive equilibrium of a generation process of 90Y with 90Sr separated from a sample. In this study, a new disintegration calculating formula that enable us to remove the influences by the coexistence nuclides to analyze 90Sr in highly radioactive liquid wastes of spent-fuel reprocessing plants was derived, and the formula was validated by experimental approaches. It was found that 90Sr could be analyzed without any influences when a sample contained nuclides that had a long half life, and the radioactive equilibrium was small enough compared to the generation of 90Y. The relative standard deviation of the analysis by the proposed method was equal to, or less than, 3%.

Original languageEnglish
Pages (from-to)633-638
Number of pages6
Journalbunseki kagaku
Volume58
Issue number7
DOIs
Publication statusPublished - Dec 22 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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