The electrochemical oxidation and the quantitative determination of hydrogen sulfide on a solid polymer electrolyte-based system

Abstract A study has been made of the adsorbed products of H 2 S on a solid polymer electrolyte (SPE)-Pt electrode by electrochemical and XPS methods. The adsorbed products depend on the potential. On the basis of an investigation of the oxidation of hydrogen sulfide, a quantitative determination of H 2 S concentration in the gas phase was carried out on the SPE-based electrode system in a controlled potential mode. The electrode system has a number of attractive properties, including a low detection limit, good reproducibility, fast response and satisfactory linearity.

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