Abstract
Mixtures of Au(III), Ru(III), Rh(III), Pd(II), Os(III), Ir(III) and Pt(IV) were analysed qualitatively by reversed phase extraction chromatography on paper impregnated with Amberlite LA-1 hydrochloride and developed with 6 M HCl using the descending or circular technique or Matthias' method. The sensitivities of colour tests for the metalsinvestigated have also been determined. The time of analysis depends on the chromatographic technique applied and varies from 1 h (circular technique) to 3.5 h (Matthias' method).
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