Abstract
Paper electrophoresis of metal ions in EDTA—ligand buffer solutions. II. Some bivalent metal ions and rare earth metal ions The electrophoretic mobility curves of alkaline earth ions in Mg 2+MgL 2− ligand buffer solutions containing EDTA, and those of bivalent heavy metal ions and of the complete rare earth group in Zn 2+ZnL 2− ligand buffer solutions at pH 4 and pH 2 were investigated. These migration media were found to be useful for the reproducible electrophoresis of metal ions. Deviations from theory and the levelling effect of ligand buffers on chelate stabilities are examined. Stability constants were estimated from electrophoretic data both numerically and through graphical logarithmic analysis. The applicability for practical separation procedures is briefly discussed.
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