Abstract
AbstractQuantitative analyses of light elements using energy‐dispersive x‐ray microanalysis (EDX) is increasingly possible since the development of sealed light element ultra‐thin window detectors. However, the computer programs available for quantitative analyses fail for light elements because the correction and background modelling parameters are not accurately known. Therefore, we have developed a simple method of light element quantitative analysis using the peak ratios of two elements as the basis for calibration curves using stable standards. The use of peak ratios avoids the need for accurate ZAF corrections and minimizes many experimental variables. This article describes the criteria for the selection of standards, and the development of the calibration curve in the case of compounds containing oxygen and carbon. The success of the method depends on careful sample preparation and predetermined experimental parameters. The method has been successfully applied to the surface analysis of fresh and oxidized Western and Eastern Canadian coals.
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