Nitrogen determination by pyrolysis using steam. I.

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概要

• 論文の詳細を見る

• Pyrolysis of nitrogen compounds with use of steam and FeCl<SUB>3</SUB>–Al<SUB>2</SUB>O<SUB>3</SUB> catalyst was investigated in detail in order to develop a new method for nitrogen determination. The catalyst was prepared by mixing an aqueous FeCl<SUB>3</SUB> solution and porous active Al<SUB>2</SUB>O<SUB>3</SUB> for column chromatography and drying the mixture. A sample solution containing nitrogen was added to the catalyst in a boat and was then covered with an additional catalyst after removal of the solvent, leaving the sample adsorbed on the catalyst. The boat was then inserted into a pyrolysis tube, the sample being pyrolyzed in the presence of steam also used as carrier gas. The nitrogen in the sample converted into ammonia by the pyrolysis reaction was determined by titration after steam distillation under alkaline conditions. The nitrogen compounds except for N–O and N–N bonded compounds were converted quantitatively into ammonia by the pyrolysis under optimum conditions. The reaction was applied to the determination of nitrogen in various compounds.

• 公益社団法人 日本化学会の論文

著者

• Nomura Akira

  Department Of Analytical Chemistry National Institute Of Materials And Chemical Research

• Kogure Yukitoshi

  Department of Analytical Chemistry, National Chemical Laboratory for Industry

• Morita Yazaemon

  Department of Analytical Chemistry, National Chemical Laboratory for Industry

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