Headspace Hydrogen Sulfide Measuring in Crude Oil using Porapak-Q Zeolites in Gas Chromatography Column

This paper describes a new method for separation, identification and quantification of dissolved hydrogen sulfide in the exported crude oil using porapak-Q zeolites in gas chromatography column. Measurement of dissolved hydrogen sulfide concentration is one of the most important parameters to price assessment of the exported crude oil. Some traditional methods (e.g. Iodimeteric) have been used for quantification of dissolved hydrogen sulfide concentration in oil industry. Gas chromatography seems to be a simple and accurate method for these complex solutions and consequently, headspace technique can prevent from those heavy compound entrances to gas chromatograph column. Therefore, in this study, headspace gas chromatography technique has been recommended as a practical and accurate method for hydrogen sulfide quantification in the exported crude oil. Results show that polar zeolites like porapak-Q have suitable separation efficiency for natural gas components containing hydrocarbons, hydrogen sulfide, and carbon dioxide.