Determination of uranium and thorium in high purity titanium by ICP-MS after ion exchange separation

The determination of trace amounts of U and Th in Ti by ICP-MS has been investigated. Sample was decomposed with hydrochloric acid in a Teflon pressure vessel, and subsequently added hydrogen peroxide solution. In order to reject matrix effect in the measurement, U was separated from Ti by anion exc...

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Published inBUNSEKI KAGAKU Vol. 42; no. 1; pp. T19 - T22
Main Authors KON, Masao, HAYASHI, Masaru, KOZUKA, Shoji, MATSUNAGA, Hideki
Format Journal Article
LanguageEnglish
Japanese
Published Tokyo The Japan Society for Analytical Chemistry 01.01.1993
Nippon Bunseki Kagakkai
Japan Science and Technology Agency
Subjects
determination of uranium and thorium
ICP-MS
ion exchange separation
titanium
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ISSN0525-1931
DOI10.2116/bunsekikagaku.42.T19

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Summary:The determination of trace amounts of U and Th in Ti by ICP-MS has been investigated. Sample was decomposed with hydrochloric acid in a Teflon pressure vessel, and subsequently added hydrogen peroxide solution. In order to reject matrix effect in the measurement, U was separated from Ti by anion exchange using 9 M hydrochloric acid and Th was separated from Ti by cation exchange using 1.5 M hydrochloric acid. Quantitative recoveries were obtained for U and Th. The present method effectively determined U and Th of sub ppb level in Ti.
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ISSN:0525-1931
DOI:10.2116/bunsekikagaku.42.T19