I have to check adsorption of ammonia via synthetic matrix. Later on will take it for in-vitro analysis. Many have used a standard of (NH4)2SO4 but have added 2mM ammonium chloride for in-vitro studies. (NH4)2SO4 donot have toxicity effect, the only thing I can think of is it's ability to precipitate proteins. Is that the reason of using NH4Cl instead of (NH4)2SO4 ?
The pH of pure ammonium chloride (NH4Cl) aq. sol. can be predicted as I have shown at:
https://www.researchgate.net/post/What-exactly-does-adjusting-8mM-Ammonium-Chloride-to-solutions-of-pH-of-9-and-10-mean/1
On predicting the pH of a pure (NH4)2SO4 aq. sol.; see: https://www.researchgate.net/post/What-is-the-difference-between-using-ammonium-sulfate-and-using-sodium-sulphate-in-protein-ppt-and-seperation
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