INORGANIC MODIFIERS IN ION-PAIR CHROMATOGRAPHIC-SEPARATION OF DICYANOAURATE(I)

Eluents based on tetrabutylammonium hydroxide and acetonitrile contain ing inorganic anions, carbonate or perchlorate, as modifiers were used in the separation of gold cyanide complexes from other metal cyano co mplexes. By varying the inorganic modifier concentration, interference from base metal and silver cyanide complexes on gold cyanide separati on was eliminated. An eluent containing perchlorate showed a higher re lative response than one containing carbonate, the elution time was co mparatively shorter with perchlorate, and the sensitivity was enhanced . Spectrophotometric detection at 215 nm was used.