Analysis of ammonia or urea in systems containing sodium hydroxide, sodium carbonate, urea, and ammonia
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We have an intermediate liquid component as indicated in the title; since both ammonia and urea may be present, it is not possible to use the method of adding alkali to vaporize ammonia alone, as the result could be a combination of the two. The liquid is alkaline; we can use stripping to remove the ammonia from the liquid, thereby determining its ammonia content. Furthermore, by using the aforementioned alkali addition distillation method to determine the total amount of ammonia, if the result is the same as that obtained through stripping, then the liquid contains no urea; otherwise, it contains urea. The difference between the two values represents the amount of urea present. Everyone, please give me some feedback to see if this works
The original poster can refer to the methods outlined in \"Analysis of Synthetic Ammonia in Nitrogen Fertilizer Plants\" and \"Analysis of Urea\", analyze their commonalities and differences, and determine an analysis method suitable for their own system. “The analysis methods for \"nitrate nitrogen\" and \"ammonium nitrogen\" are slightly different; you need to find out which type of \"nitrogen\" urea belongs to.
The national standard analytical method for urea involves using urease to convert the nitrogen in urea into ammonium nitrogen; the original poster may find this useful as a reference. However, given the complexity of your components, it is recommended that you conduct experiments once you have an idea; under no circumstances should it be applied directly in actual production.