Studies on the application of solid-phase microextraction for analysis of volatile organic sulphur compounds in gaseous and liquid samples

The possibility of application of the solid-phase microextraction (SPME) sampling for quantitative analysis of some volatile organic sulphur compounds (VOS) in both gaseous and aqueous samples was examined. The sorption and desorption-time profiles were determined in order to optimize the isolation conditions for VOS from gaseous (nitrogen or propane-buthane mixture) and liquid phases (aqueous solution). The applicability of laboratory-built trap for focusing the tested compounds before introduction them on chromatographic column has been also studied. The obtained results have confirmed the utility of the SPME technique for extraction of VOS from gas samples in the concentration range of 5-100 mg l(-1) and from water of 100 mg l(-1)-5 mg l(-1). For the tested concentration range good linearity between area and concentration was obtained. Furthermore, the working conditions for a flame photometric detector were optimized.