原子スペクトル分析による微量元素の定量における気相試料導入法の開発

概要

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A new sensitive analytical atomic spectrometry coupled with gas-phase sample introduction methods was investigated. First, the single and multi-element determination methods for As, Sb, Bi, Se, Te, Sn and Pb by high power nitrogen microwave induced plasma (N_2-MIP), as a new excitation source for atomic emission spectrometry (AES), an annular-shaped high power N_2-MIP produced at atmospheric pressure by an Okamoto cavity, which coupled with hydride generation have been investigated. Second, a trace amount of carbon was determined by atmospheric-pressure helium (He)-MIP-AES with the generation of carbon dioxide. Finally, inductively coupled plasma (ICP)-AES and quartz tube atomization atomic absorption spectrometry (QTA-AAS) couple with a gas-phase sample introduction technique for the determination of copper, cadmium and silver were investigated. As a result, when compared with conventional solution nebulization, a great improvement in the sensitivity was attained in each instance. After the effects of several diverse elements, trace elements were determined by the proposed methods : As, Sb, Bi, Se, Te, Sn, Pb, Cu and Ag in steels, C in aqueous solutions and Cd in polyethylene. The results obtained by this method were in good agreement with their certified values.
社団法人日本分析化学会の論文
2005-11-05