Spectrophotometric determination of platinum(IV) with potassium butyl xanthate

Abstract

A simple, convenient and highly selective spectrophotometric method for the determination of platinum has been developed using potassium butyl xanthate. The optimum concentration range evaluated by Ringbom's method was found to be 4.87–9.75 ppm. The method of continuous variations and the molar ratio method confirmed a platinum to reagent ratio of 1 : 3 in the complex. The effect of pH, excess of reagent and foreign ions on the determination of platinum(IV) and the effect of time, temperature and the solubility of the complex with various solvents were studied.