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The Universal Value and Full Narrative of the Shikoku Henro: Comparative Analysis with Sado Gold Mine from the Perspective of Critical Heritage Studies
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The Shikoku Henro by a Traveling Ascetic: The Case of Endo Bun'emon of Mino Province
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Revision of the Ehime University Competencies Standards for Students: Process and Issues
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Research on Employment Support for Students in Special Needs Schools Using Remote-controlled Robots
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A Study on the Significance of Experiencing a Community Collaborative Project for Prospective Teachers: The Approach of the “Uwajima ∞ Aidai Project”
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Technical advancement and accuracy evaluation of major and trace element analysis for silicate rocks using a wavelength-dispersive X-ray fluorescence spectrometer with a 1:5 dilution glass bead method
Full text linkWe re-established the methodology of whole-rock chemical analysis for 10 major elements and 14 trace elements with newly included Ba, using a wavelength-dispersive X-ray fluorescence spectrometry with a 1:5 dilution glass bead method. We used standard samples of the Geological Survey of Japan and the US Geological Survey to prepare calibration curves. For most of the major elements, the relative errors between the analyzed and standard values of the standards were less than 4%. For trace elements, low relative errors (< 10%) were obtained for eight elements except Cr, Zn, Zr, Nb, Ba, and Th. Repeated analysis of the standards resulted in small standard deviations suggesting high reproducibility. The detection limit of each element is low enough for ordinary analysis. The accuracy estimated in this study is comparable to or lower than those obtained by previous studies for all elements except for Ba and Th. This result suggests that the re-established method presented here is practical enough for whole-rock major and trace element analysis of silicate rocks.departmental bulletin pape
