University Chemistry ›› 2015, Vol. 30 ›› Issue (1): 45-48.doi: 10.3866/PKU.DXHX20150109

• Chemistry Laboratory • Previous Articles     Next Articles

Improvement on the Content Determination of Nitrogen in Ammonium Salt by Formaldehyde Method*

Liu Yue1, Li Yan2, Chen Peihao1, Li Xiaoshuang1, Feng Yimei1, Yu Xiaodong1   

  1. 1. College of Chemistry, Tianjin Normal University, Tianjin 300387, China;
    2. Chemical Experimental Teaching Center, College of Chemistry, Nankai University, Tianjin 300071, China
  • Published:2015-02-25


This paper reports an improved formaldehyde method for determining nitrogen content in the ammonium salt. The improved procedure is environmentally benign and easy to operate, and has been used in the basic analytical chemistry laboratory course.

Key words: Paraformaldehyde, Hydrolysis, Nitrogen content


  • O6-3