蛍光X線分析法による地質試料の主成分及び微量成分元素の高精度分析

概要

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We describe a rapid X-ray fluorescence spectrometry method for the 10 major and 12 trace elements analyses of geological samples. A high concentrated fused glass bead, with a sample to flux ratio as 1 : 2, was prepared to analyze both major and trace elements on a single pellet. The effects of the loss on ignition of both sample and flux were tested to make an accurate mixing rate bead. The mixture is fused under 1200℃ for about 11 minutes. The effect of vaporization of alkaline metals during the fusion is less than 0.5% as the re-fusion time less than 6 minutes. The calibration lines were determined by using the 15 GSJ standard rocks. We tested the reproducibility and the trueness of the analylical values by repeated analyses using the analyzer Philips Magix of the Sapporo Campus. A rapid analysis becomes possible with sufficient accuracy, the total time for the analysis of one sample being about 43 minutes.
北海道教育大学の論文
2003-09-30