ICP原子発光分析におけるin situ化学反応による新規な試料導入法の開発とその応用
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概要
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Novel methods for sample introduction in inductively coupled plasma atomic emission spectrometry were developed by combining chemical reactions and low-temperature electrothermal vaporization. Analytes in samples of complex matrices were transformed to volatile compounds through in situ alkylations or chelating reactions and vaporized successively at comparatively low temperatures into the plasma. Since both the formed alkylmetals and the alkylating agents used in this work are sensitive to water and air, reaction systems which are free from water and air were established. By these approaches, introduction efficiency of nearly 100% was achieved for all the elements examined. Moreover, since the formation and vaporization of the volatile species were carried out at temperatures lower than the melting points of most inorganic materials, most coexisting metal ions did not interfere with the determinations. Analytical results for beryllium, cadmium, chromium, vanadium and zinc in various standard reference samples by the proposed methods certified the validity of these methods in practical applications.
- 社団法人日本分析化学会の論文
- 1996-09-05