Elemental sulphur present in various pharmaceutical products is separated by reducting with molten benzoin to hydrogen sulphide. With the help of a nitrogen stream the volatile sulphide is passed through a solution of zinc acetate to form white turbidity of zinc sulphide. Aliquots of zinc sulphide turbidty are analyzed by Methylene Blue method to determine sulphur content. The method has also been found useful for the determination of sulphur in a number of organic thiocompounds. The effect of a number of concentrated parameters have been investigated to optimise the conditions of the procedure.
A KHAN ,J ANWAR ,M I FAROOQI ,M ASIF ,
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