Elemental sulfur in the brine of Lake Doroninskoe (Eastern Transbaikalia) |
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Authors: | L V Zamana S V Borzenko |
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Institution: | 1.Institute of Natural Resources, Ecology, and Cryology, Siberian Branch,Russian Academy of Sciences,Chita,Russia |
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Abstract: | The concentration of elemental sulfur (S0) in the upper oxic layer of the meromictic (stratified by water mineralization) soda Lake Doroninskoe (about 5.5 m depth)
varied in the survey periods from the detection limit (0.002 mg/l) to the registered maximum of 0.444 mg/l, with an average
value of 0.12 mg/l. In the lower hydrosulfide layer, these concentrations amounted to 0.012–1.88 mg/l. The results obtained
point to the processes of sulfide sulfur oxidation under reductive conditions, and of sulfate reduction to form hydrogen sulfide
in the oxic medium. The dynamics of the seasonal S0-thiosulfate ratio testifies to the dual (oxidative and reductive) nature of the latter. |
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