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Reevaluation of Rare Earth Element Abundances in Japanese Standard Rock Samples, JG-1 and JB-1

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Abstract

We have determined rare earth elements(REE) in JG-1 and JB-1, standard rock samples issued by the Geological Survey of Japan, by radiochemical and instrumental neutron activation analyses. Our new data are mostly consistent with the recommended values for all the REE of JB-1 and the light and middle REE in JG-1, except for Tb. Our Tb values of JB-1 and JG-1 are about 2 times larger than the previously compiled values. For the heavy REE of JG-1, the neutron activation analysis data involving the literature values are systematicaily larger than the mass spectrometric isotope dilution data, with the former being as large as factor of two for Yb and Lu compared to the latter. Incomplete decomposition of rock samples with HF and HCIO* is suggested as a possible cause for such large discrepancies.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of General Studies, Gunma University, Maebashi, Gunma, 371, Japan

    Mitsuru Ebihara

  2. Department of Chemistry, Faculty of Science, University of Tokyo, Hongo, Tokyo, 113, Japan

    Yoshitaka Minai, Michael K. Kubo, Takeshi Tominaga & Naomi Aota

  3. Department of Chemistry, Faculty of Science, Kanazawa University, Kanazawa, 920, Japan

    Toyokane Nikko & Koh Sakamoto

  4. Geological Survey of Japan, Yatabe, Ibaraki, 305, Japan

    Atsushi Ando

Authors
  1. Mitsuru Ebihara
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  2. Yoshitaka Minai
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  3. Michael K. Kubo
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  4. Takeshi Tominaga
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  5. Naomi Aota
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  6. Toyokane Nikko
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  7. Koh Sakamoto
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  8. Atsushi Ando
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Ebihara, M., Minai, Y., Kubo, M.K. et al. Reevaluation of Rare Earth Element Abundances in Japanese Standard Rock Samples, JG-1 and JB-1. ANAL. SCI. 1, 209–213 (1985). https://doi.org/10.2116/analsci.1.209

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  • DOI: https://doi.org/10.2116/analsci.1.209

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