Advances in elemental and isotopic analyses by ICP-mass spectrometry and their applications to geochemistry

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  • OHNO Takeshi
    Department of Earth and Planetary Sciences, Graduate School of Science and Technology, Tokyo Institute of Technology
  • HIRATA Takafumi
    Department of Earth and Planetary Sciences, Graduate School of Science and Technology, Tokyo Institute of Technology

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Other Title
  • 誘導結合プラズマ質量分析法における元素定量及び同位体分析技術の進歩とその地球化学への応用
  • ユウドウ ケツゴウ プラズマ シツリョウ ブンセキホウ ニ オケル ゲンソ テイリョウ オヨビ ドウイタイ ブンセキ ギジュツ ノ シンポ ト ソノ チキュウ カガク エ ノ オウヨウ

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Abstract

Mass spectrometers utilizing an atmospheric pressure inductively coupled plasma (ICP) as an ion source have been widely used for elemental and isotopic analyses of trace elements in various samples. The strength of ICP-mass spectrometer (ICP-MS) lies with the ion source that achieves high ionization efficiency for almost all elements. An extension of the capability of ICP-MS is to accept dry samples generated by a laser ablation technique (LA). The combination of LA and ICP-MS techniques has opened up a completely new field of the Earth science for which spatial resolution is required. Recently, the measurement of isotopic ratios by multiple collector-ICP-MS (MC-ICP-MS) has been described. The precision of isotopic ratios achieved by the MC-ICP-MS technique is comparable to those exhibited by the TIMS technique. Precise isotopic data obtained by the MC-ICP-MS technique have revealed that natural stable isotope fractionations of many elements heavier than S (e.g., Fe, Cu, Zn) are common on the Earth. In this paper, we review recent outstanding studies on isotope geochemistry achieved by LA-ICP-MS and MC-ICP-MS techniques.<br>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 53 (7), 631-644, 2004

    The Japan Society for Analytical Chemistry

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