Kinetics of Au3+ reduction by resonant laser radiation

An investigation was made of the photochemical reduction of Au³⁺ by resonant laser radiation. A study was made of the kinetics of the Au³⁺ → Au⁰ reduction in an HCl solution in the presence of reducing agents. An estimate was obtained of the influence of impurities (Fe³⁺) on the process kinetics. The quantum yield of the photoprocess and the rate constant of the reduction reaction were determined.