Determination of the Isotopic Compositions of Samarium and Gadolinium by Thermal Ionization Mass Spectrometry

H. Hidaka*, M. Ebihara, M. Shima

*この研究の対応する著者

研究成果: Article査読

44 被引用数 (Scopus)

抄録

Because of the large neutron capture cross sections for 149Sm, 155Gd, and 157Gd, accurate and sensitive isotopic analyses of samarium and gadolinium can be used to investigate natural neutron irradiation exposure. In this paper, chemical separation procedures and mass spectrometric methods for the precise determination of samarium and gadolinium isotopic compositions are described. Isotopic ratios other than 144Sm/152Sm, 152Gd/160Gd, and 154Gd/160Gd for both samarium and gadolinium in commercial reagents, artificially neutron-irradiated reagents, and geological reference rocks are quantified within 0.001% precision at the 95% confidence level. The present method can detect effects caused by timeintegrated neutron flux of 1.3 × 1014 neutrons/cm2 in the environmental samples.

本文言語English
ページ(範囲)1437-1441
ページ数5
ジャーナルAnalytical chemistry
67
8
DOI
出版ステータスPublished - 1995
外部発表はい

ASJC Scopus subject areas

  • 分析化学

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