The presence of sulfuroxyion compounds (thiosalts) in mining wastewater is a concern because of their potential for acidification of receiving water bodies. Despite extensive research, generation and kinetic information of thiosalt species under different pH and temperature conditions is not fully understood, especially under the range of conditions likely to be encountered in receiving ponds. As a result, it is difficult to design ponds or develop treatment technologies to treat these compounds. The authors present a summary of relevant information in terms of generation and kinetics of thiosalts, analytical methods for measuring their concentrations, and treatment of thiosalt wastes.

An indirect CZE method was developed for the simultaneous determination of five thiosalt anions: sulfate (SO42−), thiosulfate (S2O32−), trithionate (S3O62−), tetrathionate (S4O62−) and pentathionate (S5O62−).

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