What is the best method for measuring ammonia nitrogen?
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What is the best method for measuring ammonia nitrogen? What instruments should be used?
The methods that meet the standards are as follows: 1. Nessler’s reagent colorimetric method, which requires a colorimeter; 2. Salicylic acid colorimetric method, also requiring a colorimeter. If the ammonia nitrogen level is very high, the distillation-acid-base titration method can be used – this is the most accurate method, but its detection limit is not very low. There is also the ammonium ion electrode method and ion chromatography; you should first search online to find out what equipment is needed.
Could you list the specific steps of the distillation-acid-base titration method so I can learn them?
It is best to work out these specific steps on your own based on what is described in the standard methods; learning from books is much more effective than learning from a computer screen.
We use a spectrophotometer, spectrophotometry
Colorimetry, I guess. There are now colorimeters for measuring ammonia nitrogen ion concentrations; they are quick and convenient to use, and work quite well.