負イオン質量分析法による超高感度同位体分析とその地球化学・環境科学への応用  [in Japanese] Highly sensitive analysis of isotope abundances through negative thermal ionization mass spectrometry and its application to geochemistry and environmental chemistry  [in Japanese]

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Author(s)

    • 鈴木 勝彦 SUZUKI Katsuhiko
    • 東京大学大学院総合文化研究科広域科学専攻広域システム科学系|(現)京都大学大学院理学研究科附属地球熱学研究施設 Department of General System Studies, Graduate School of Arts and Sciences, University of Tokyo|(Present address) Institute for Geothermal Sciences, Graduate School of Science, Kyoto University

Abstract

Negative thermal ionization mass spectrometry (N-TIMS) has been recently developed as a precise and accurate method in mass spectrometry to determine isotope ratios of some elements, which cannot be measured by positive thermal ionization mass spectrometry (P-TIMS) easily. In N-TIMS, isotopic compositions of elements, such as halogens, chalcogens, boron and platinum group elements with high ionization potentials, are determined as negative atomic ions M<sup>-</sup>, oxide ions MO<sub>x</sub><sup>-</sup> (x=1-4) or fluoride ions MF<sub>x</sub><sup>-</sup> (x=4). Recent interesting developments in geochemistry is the determinations of rhenium-osmium systematics, redetermination of the relative atomic masses of elements by more precise and more accurate isotope ratio measurements, the determination of isotope variations in geological and cosmic samples and the analysis of trace and ultra-trace amounts of elements in the environment. In this paper, after theory and characteristics of N-TIMS are mentioned, some recent applications of N-TIMS is summarized in the field of geochemistry and environmental chemistry. Among recent topics, (1) application to rhenium-osmium systematics, (2) precise boron isotope analysis and its application to environmental chemistry, and (3) precise iron isotope analysis and its application to biological and medical use are described. Problems involved in N-TIMS are also discussed.

Journal

  • Chikyukagaku

    Chikyukagaku 33(2), 67-102, 1999

    The Geochemical Society of Japan

References:  155

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Codes

  • NII Article ID (NAID)
    110008679973
  • NII NACSIS-CAT ID (NCID)
    AN00141280
  • Text Lang
    JPN
  • Article Type
    REV
  • ISSN
    0386-4073
  • NDL Article ID
    4755852
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-645
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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