Abstract: In this paper, an electron-capture gas chromatographic method for the micro amounts of free elemental sulfur in 15rubber vulcanizates is described. The results obtained by this approach are comparable with obtained by chemical analysis. The detectability for element in salution is 10^-12/μL. The quantity of extractant used, the extraction time, reliability and reproduci-bility of the method are discussed. The experimental results show that it is a simple and rapid method for determination of free elemental sulfur in rubber yulcanizates.

Key words: Electron-capture gas chromatography, Rubber vulcanizates, Determination of micro amounts of free elemental sulfur