2024-03-29T01:43:52Z
https://repository.dl.itc.u-tokyo.ac.jp/oai
oai:repository.dl.itc.u-tokyo.ac.jp:00032223
2022-12-19T04:07:33Z
80:4453:4483
9:504:4455:4484
Major and Trace Components Analysis of Silicate Rocks by X-ray Fluorescence Spectrometer Using Fused Glass Beads : Evaluation of Analytical Precision of Three, Six, Eleven Times Dilution Fused Glass Beads Methods
ガラスビードを用いた蛍光X線分析装置による珪酸塩岩石の主・微量成分分析:3倍・6倍・11倍希釈ガラスビード法の分析精度の評価
谷, 健一郎
71835
折橋, 裕二
71836
中田, 節也
71837
X-ray fluorescence spectrometry
Low dilution glass bead
Silicate rock
Major and trace element determinations
We established a quantitative analysis for 10 major and 15 trace elements in silicate rocks by X-ray fluorescence spectrometry (XRF), using three types of dilution ratio glass bead, i.e., sample : flux ratios of 1 : 2, 1 : 5 and 1 : 10. The individual calibration lines, constructed using 24 igneous rock reference materials issued by USGS and GSJ, showed excellent accuracy and correlation coefficient for both major and trace elements, and no difference among the three types of glass beads, but, overall, the low dilution glass bead method (1 : 2) presented good analytical precision of both major and trace element in comparison with the other high dilution glass beads (1 : 5 and 1 : 10). For the assessment of our data quality, five reference rock materials of SY-2, SY-3, MRG-1, MIN-L and NIM-G, issued by SABS and CANMET were measured using above low dilution glass bead method. Our results were in good agreement with the recommended values reported by Potts et al. (1992), excluding Nb in SY-2, Co, Cr and Rb in SY-3, Ba and Pb in MRG-1, and Co and Ni in NIM-G. This suggests that our XRF method using low dilution glass bead is suitable to rapid and accurate determination of major and trace elements in silicate rocks from single glass bead.
<論説>
departmental bulletin paper
東京大学地震研究所
2002
application/pdf
技術研究報告
8
26
36
AA11602838
13426486
https://repository.dl.itc.u-tokyo.ac.jp/record/32223/files/08_026-036.pdf
jpn