A relatively simple and sensitive method for the determination of nitrate has been developed. The method is based on the reduction of nitrate with mercury sulphuric acid mixture. Oxidized mercury is determined spectrophotometrically by dithizone method. Various parameters such as volume and concentration of sulphuric acid, effect of other anions and effect of time have been checked. The method is found equally useful for organic and inorganic nitrates.
Z U NISA ,M I FAROOQI ,J ANWAR ,
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