Abstract
A differential-pulse polarographic procedure is described for the determination of trace amounts of disulphides in sodium 2-mercaptoethanesulphonate and in pharmaceutical products in which the latter compound is a component. Concentrations of the order of 1 mg ml−1 can be determined with a precision of about 3.2%. The lowest concentration of disulphide that could be determined in the mercaptosulphonate and the pharmaceutical product is about 0.1%. No matrix separation is required.
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