珪酸塩岩から炭酸塩岩までの広範囲の組成における主成分元素および微量成分元素の XRF 低希釈率ガラスビート分析  [in Japanese] XRF analysis of major and trace elements for wide compositional ranges from silicate rocks to carbonate rocks using low dilution glass beads  [in Japanese]

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Author(s)

    • 後藤 晶子 GOTO Akiko
    • 東北大学理学研究科地学専攻地球物質科学科 Institute of Mineralogy, Petrology and Economic Geology Graduate School of Science, Tohoku University
    • 堀江 太一郎 HORIE Taichiro
    • 東北大学理学研究科地学専攻地球物質科学科 Institute of Mineralogy, Petrology and Economic Geology Graduate School of Science, Tohoku University
    • 大場 司 [他] OHBA Tsukasa
    • 東北大学理学研究科地学専攻地球物質科学科 Institute of Mineralogy, Petrology and Economic Geology Graduate School of Science, Tohoku University
    • 藤巻 宏和 FUJIMAKI Hirokazu
    • 東北大学理学研究科地学専攻地球物質科学科 Institute of Mineralogy, Petrology and Economic Geology Graduate School of Science, Tohoku University

Abstract

Carbonate rocks frequently contain some silicate minerals and various xenoliths. Calcareous mudstone is also widely distributed. There is no report of practical analytical method of mixtures of silicate and carbonate by XRF spectrometer. Therefore, we must invent the precise analytical method ranging from silicate to carbonaceous rocks.<br>In this study, we used low dilution glass beads (sample : flux ratio of 1 : 2) and tried to analyze wide compositional range for such major elements as SiO<sub>2</sub>, TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, MnO, MgO, CaO, Na<sub>2</sub>O, K<sub>2</sub>O and P<sub>2</sub>O<sub>5</sub> with trace elements (V, Cr, Ni, Rb, Sr, Ba, Y, Zr, Nb) by XRF spectrometer. In order to analyze ranging from wide compositional samples, we made some standards; such as mixed standards, additive standards and synthetic standards. The mixed standards consist of the mixture of two GSJ standards. The next ones are weighed-reagents added GSJ standards. The beads of weighed-reagents added SiO<sub>2</sub> powder are synthetic standards. In addition to them, we used some GSJ standard samples. The glass beads of high CaO content samples are not transparent. We therefore developed the method to make clear grass beads by adding a small amount of SiO<sub>2</sub> powder to the samples. As a result, we could perform precise XRF analyses for wide compositional ranges from silicate to carbonate rocks.

Journal

  • Japanese Magazine of Mineralogical and Petrological Sciences

    Japanese Magazine of Mineralogical and Petrological Sciences 31(3), 162-173, 2002-05-30

    Japan Association of Mineralogical Sciences

References:  18

Cited by:  1

Codes

  • NII Article ID (NAID)
    10008734659
  • NII NACSIS-CAT ID (NCID)
    AA1146088X
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1345630X
  • NDL Article ID
    6222497
  • NDL Source Classification
    ZM46(科学技術--地球科学--岩石・鉱物・鉱床)
  • NDL Call No.
    Z15-117
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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