Hello, the experiment I want to conduct involves finding the amount of ammonia in a solution as a result of urea decomposition. However, I am trying to follow this method set out in this paper (page 22): Article Microbial CaCO3 precipitation for the production of biocement
2/02Whole.pdf (Please see https://researchrepository.murdoch.edu.au/id/eprint/399/2/02Whole.pdf for full paper). How would I go about diluting the sample in a range of 0-0.5mM?An alternative method is set out in this paper Article Chromaticity Characteristics of NH 2 Hg 2 I 3 and I 2 : Mole...
. If using this method when the ammonium is introduced to the 25mL flask, the procedure next dilutes with 10mL water, following 1mL nessler's reagent and then water to the marker (?) . Does the water to the marker mean bringing the volume of the solution to 25mL?
Paul Milham
Please consider not using Nessler's reagent because it contains mercury which is a permanent environmental toxin. There are alternative methods that use phenol or salicylate with hypochlorite
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