エーテル-14M硝酸系における金属イオンの微結晶性セルロース薄層クロマトグラフィー

概要

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Thin-layer chromatographic behavior of 45 metal ions on microcrystalline cellulose(Avicel SF) has been surveyed in ether-14 M nitric acid media. Rf values were measured as a function of the solvent volume ratio. The more than a half of the tested metal ions, which was not extracted from nitric acid solution into ether, remained at the starting points regardless of the solvent volume ratio, while several ions, gold(III), rhenium(VII), tin(IV), and uranium(VI), which were well extracted, showed high Rf values. The others, possessing some extent of the possibilities of the extraction, exhibited increased Rf values with decreasing the solvent volume ratio. It can be expected that this rise of the Rf values suggests an increase of the abundance of the species available for the extraction. Inspection of Rf values of metal ions allowed many useful separations like mercury (II)-cadmium, thorium-zirconium-lanthanum, gold (III)-palladium (II)-platinum(IV), which had been difficult in both paper chromatography and cellulose thin-layer chromatography using ether-nitric acid media. These were easily achieved by using ether-14 M nitric acid (1: 1, v/v) as a developing solvent.
社団法人日本分析化学会の論文