Determination of Hydrogen Sulfide and Thiols in Gaseous Hydrocarbons

Page: 453

J. Polak

Research & Development Centre, Chemopetrol Comp., Litvinov


The method described in the paper solves a simple and accurate determination of hydrogen sulfide and mercaptans in gaseous hydrocarbon mixtures. The method is based on absorption of a sample in an antioxidant solution (alkaline solution of ascorbic acid with an admixture of Chelaton III) and subsequent parallel determination of the salts formed by cathodic stripping voltamperometry. A sufficient difference in potentials of both substance types (approx. 200 mV) enables the determination.


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