An Application of the Oxidation Reaction between Ammonia and Bromate, Permanganate or Dichromate for the Determination of Ammonia Nitrogen in the Kjeldahl Digests without Distillation

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概要

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• Nitrogen in organic compounds, agricultural and animal products is converted into ammonium sulphate by Kjeldahl digestion. The ammonium sulphate is reacted quantitatively with hypobromite produced <I>in situ</I> by the addition of an excess of potassium bromate and bromide. The unutilized potassium bromate is determined iodometrically and the amount of ammonia nitrogen can be calculated from the consumed potassium bromate. Accurate results are also obtained when potassium bromate is replaced with potassium permanganate or dichromate for the determination of ammonia nitrogen in Kjeldahl digests. However, the present method is not applicable to the determination of ammonia nitrogen in undigested sample.

• 公益社団法人 日本化学会の論文

著者

• Siddiqui M.

  Pakistan Council of Scientific & Industrial Research Laboratories

関連論文

• An Application of the Oxidation Reaction between Ammonia and Bromate, Permanganate or Dichromate for the Determination of Ammonia Nitrogen in the Kjeldahl Digests without Distillation

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