蛍光X線分析法の製錬滓試料への適用

概要

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The accurate X-ray fluorescence analysis for copper ores, smelting funaces and slags of widely varying composition has been achieved using a fundamental parameter correction method with reference geochemical materials. Powders rich in heavy metals were prepared by mixing of iron oxide and sulfides with GSJ (Geological Survey of Japan) geochemical reference rocks, and were used as reference materials in the correction procedure by a fundamental parameter method. Detection limits were about 50ppm for major elements having small atomic numbers and about 2ppm fir heavy elements. Copper ores, smelting funaces and slags were obtained from the Eboshi ore body at Naganobori, Yamaguchi Prefecture and Maruyama ore body at Tsumo, Shimane Prefecture. The age of remains of a fragment of smelting furnace and a disc of slag from two mine sites were assumed to be the Edo period. Analytical results shows that the composition of a slag at Naganobori preserves the original characteristics of ore and that at Maruyama has a strong influence from furnace materials.
九州大学の論文