The role of polysulfides in natural sulfide mineral waters and methods of analysis is currently the subject of much attention. The results of the determination of the elemental sulfur and polysulfide sulfide thermal springs (STS) of Buryatia liquid methods, solid-phase extraction and microcolonies reversed-phase high-performance liquid chromatography are presented. The content of free sulfur in the STS sources of the Republic of Buryatia is two orders of magnitude lower than STS Matsesta and Novonukutskiy sources. The allocation of elemental sulfur solid-phase extraction leads to decomposition of the sulfanes with the formation of octasulfur and corresponds to the total content of the molecular and polysulfide sulfur.Significant amounts of nitrogen-containing organic sulfanes: N-methyldithiocarbonimidonic acid and 2,5-bis(methylthio)thiazole have been detected. The formation of sulfur allotropes – S₇, S₈ and S₉, is attributed to an artifact whose appearance may be due to the decomposition of organic sulfanes during the analysis. . The high balneological activity of the STS studied is due to the post-expiratory permeability of the skin at high source temperatures, as well as the catalytic and / or regulatory role of covalently bound sulfur along with hydrogen sulphide in the STS balneology. The presence of organic sulfanes simultaneously with elemental sulfur and hydrogen sulphide suggests that they are active balneological components of thermal hydrogen sulfide mineral waters.

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DOI

https://doi.org/10.26516/2073-3402.2018.23.106

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