有機セレン化合物中のセレンの誘導結合プラズマ分光分析法による定量

概要

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For the inductively coupled plasma (ICP) spectroscopic determination of selenium in organic selenium compounds, several milligrams of sample is treated with concentrated nitric acid in a tightly sealed glass vessel to convert selenium into water-soluble form. Then the solution is diluted and introduced to the argon plasma, and the emission intensity is measured at the wavelength of 1960.3A (Sel). The method allows the determination of selenium in the concen-tration range 1 ppm to 1000 ppm, most conveniently 10 ppm to 100 ppm. The concentration of nitric acid of both sample and standard solution should be adjusted to 0.6N to 1.2N, because large amount of nitric acid reduces the spectral intensity of selenium. The standard solution of selenium is prepared by dissolving selenium in conc. nitric acid and conc. hydrochloric acid (1:3). Selenium content of the known selenols, diselenides and selenoxides were determined to check the accuracy of the present method. The coefficient of variation for the selenium analysis of these compounds was 0.5 % to 0.7 %.
社団法人日本分析化学会の論文
1980-03-05