Measurement of Un-ionized Ammonia in Complex Mixtures

摘要: The toxicity of un-ionized ammonia, NH3 (aq), in anaerobic digestion high-nitrogen wastes has been researched extensively. Previous estimates (aq) concentration have relied on a simple speciation approach, based only the acid dissociation constant and sample pH total ammonia concentration. distinction between chemical activity generally not made, despite potential for resulting errors calculation concentration, greater applicability to work. currently accepted approach estimating is assumptions that are valid digested animal manure or other concentrated wastes. This work presents an directly measuring complex mixtures using gaseous/aqueous equilibrium across microporous tubing. Application this digester samples confirms accurate; it overestimated ...