Abstract
The determination of major and minor elements in manganese ore was investigated in order to develop a rapid quantitative method for production control. Complexities of mineral composition and history of manganese ore require a universal method for analysis, for which the X-ray fluorescence analysis by the glass bead sample technique was considered as being most suitable. A powdered sample (1 g) with Na2B4O7 flux (15 g) was fused in Pt-5%Au crucible and the melt was casted into a graphite mould to form a glass bead. Analysis was carried out by irradiation of X-ray beam directly on the surface of a glass bead. The precision and accuracy of the method were comparable to those of the conventional chemical method. In this paper, the conditions of the preparation of a glass bead, such as the selection of the flux, the size and form of a graphite mould, the effect of the ratio of sample to flux on reproducibility and so on, were intensively investigated.
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