PMID: 18720827Aug 30, 2008Paper

Determination of trace elements of Gentiana macrophlla and Gentiana straminea by microwave digestion-FAAS

Guang pu xue yu guang pu fen xi = Guang pu
Yu-Shan ZhouXia An

Abstract

An acid-assisted microwave digestion procedure is optimized for the determination of trace elements in traditional Chinese medicine by the use of flame atomic absorption spectrometric (FAAS) techniques. Microwave-assisted digestion has the advantages of reduced time for sample dissolution, fewer possibilities for technical errors caused by spilling of hot digestion solutions, use of less chemicals, and lower losses of volatile metals. In addition, modern microwave ovens are safer and simpler and provide more controlled and reproducible conditions than hot plate or block digesters. Flame atomic absorption spectrometry (FAAS) is more commonly applied techniques in the de termination of trace elements. The accurate measurement of trace elements concentrations in samples of traditional Chinese medicine is an important goal in research for medical effects of traditional Chinese medicine. The purpose of this study was to determine the contents of the trace elements in Gentiana macrophlla and Gentiana straminea. In order to identify the accuracy of the procedure, the operating conditions was selected before the determination of trace elements. In order to gauge the effectiveness of digestion, the selection of digestion conditions of t...Continue Reading

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