WEF Discussion Forums
Laboratory Management and Technical Issues
Ammonia results as NH3-N
Why are ammonia results reported as NH3-N or Ammonia-N? Thanks
NH3,NO2/NO3,TKN are all reported as N so that they can uniformly compared for relative N quantification
It is ultimately to ensure that you are comparing apples to apples, or should I say, atoms to atoms. 17 grams of ammonia, NH3 and 101 grams of KNO3 both contain 14 grams of Nitrogen. Also remember that a part per million in this case is milligrams of Stuff per liter volume of solution.