しゃへい筒プラズマジェット炎を用いる原子吸光分析

概要

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Chemical flames are generally used for atomizing of sample in the atomic absorption method. In these chemical flames, however, some elements (for example, Si, Al, Be and Ti) form inert molecules and reduce the free atom concentration and the sensitivity of analysis. The reducing N<SUB>2</SUB>O-acetylene flame is the most suitable for these elements. The authors used the plasma jet flame for atomic absorption analysis, and tried to prevent the elements to form refractory oxides in the flame in an inert atmosphere of high temperature. As the solvents of sample before atomizing were compared several organic compounds, by measuring the efficiency of formation of free atoms and chemical interferences.<BR>Among the elements examined, Mg, Ca and Al, the latter two elements were extremely sensitive to the state of atmosphere.
社団法人日本分析化学会の論文