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Anion-exchange behaviour of a number of metal ions on DEAE-cellulose in hydrobromic and hydriodic acid media
Authors:R Kuroda  T Ishida  T Seki  K Oguma
Institution:(1) Laboratory for Analytical Chemistry, Faculty of Engineering, University of Chiba, Yayoi-cho, 260 Chiba, Japan
Abstract:Summary The adsorption behaviour of 48 metal ions on DEAE-cellulose layers has been investigated in aqueous hydrobromic and hydriodic acid media. RF values are given as a function of the hydrobromic and hydriodic acid concentration over the ranges 0.01–6 mol dm–3 and 0.01–3 mol dm–3, respectively, and are compared with those obtained with Avicel SF. RF spectra are comparatively simple in both media, reflecting the strong affinity of the bromide and iodide ions to the DEAE-cellulose phase. Pd, Pt, Re, Au and Hg are distributed chromatographically in either system, while most other metal ions exhibit rather extreme RF values of near unity or zero. Therefore, the selectivity of the systems is particularly high for Pd, Pt, Re, Au and Hg, providing the possibility of their excellent selective separations.
Keywords:Thin-layer chromatography  Anion-exchange  DEAE-cellulose  Hydrobromic acid  Hydriodic acid
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