アルセナゾIIIポストカラム発色法による希土類元素の高速液体クロマトグフフイー

概要

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A fundamental study on the determination of rare carth metals (La,Ce,Pr,Nd, and Sm) by HPLC was carried out. In this study, the detection by postcolumn color reaction with Arsenazo III was researched. Lactic acid which is one of the most common reagents used for the ion exchange separation of the lanthanides, was found to be available as an eluent, because the rare earth metal ions have strongly formed the colored complexes with Arsenazo III and the effect of a large amount of lactate ion on the color reaction was not recognized. The color reaction proceeds instantaneously at room temperature in lactate solution, and the absorption coefficients of each metal complex were almost similar. These rare earth metal ions could be determined by a single calibration curve showing the relationship between the peak area and the concentration, and each rare earth metal to be contained in Misch Metal alloy will be determined by this metbod.
社団法人日本分析化学会の論文
1983-02-05