Asunto(s)

Ampirona/análisis , Antipirina/análogos & derivados , Compuestos de Anilina , Fenómenos Químicos , Química , Indicadores y Reactivos , Soluciones/análisis , Espectrofotometría Ultravioleta

RESUMEN

A polarographic method for the microdetermination of sulphur in organic compounds is described; it is based on oxygen-flask combustion to yield sulphate, which is then reacted with excess of barium dichromate solution in hydrochloric acid, followed by adjustment to pH 12, collection of the combined barium chromate and sulphate precipitate, and polarographic determination of the free chromate (equivalent to the sulphate originally present).