Inorganic Chemical Approaches to Pharmacognosy. I. Major and Trace Elements Determination in Crude Drug Samples by Energy-Dispersive X-Ray Fluorescence Spectrometry

概要

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A convenient method requiring only one standard material was developed for the multielemental analysis (20 elements) of crude drug samples by energy-dispersive X-ray fluorescence spectrometry. The analytical method was based on the principle that when a sample powder is shaped into a very thin pellet, the excitation effect of the matrix is negligible, and a correction factor for the matrix absorption effect can be obtained by mathematical treatment. Percentage accuracies are better than ±10%, and detection limits are in the low ppm range for most elements. The present method is suitable for the examination of metal-containing profiles of many crude drug samples because of its ease of application. Several samples were analyzed and each crude drug was found to apparently have a characteristic metal profile.
公益社団法人日本薬学会の論文
1984-02-25