Spectrophotometric determination of nitrate with p-diaminodiphenylsulphone and diphenylamine-p-diaminodiphenylsulphone.


p-Diaminodiphenylsulphone is used in a new spectrophotometric method for the determination of nitrate. Factors affecting the colour development are given. The useful range for a 1-cm cell is 30-300 mg l . In this range the coloured solutions are stable and obey Beer's law. The method is rapid and precise and is applicable to routine analysis of samples… (More)


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