Ammonia determination: reagent modification and interfering compounds.
D000641:Ammonia / Q000032:analysis*; D002021:Buffers; D003124:Colorimetry; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D008722:Methods; D009584:Nitrogen / Q000032:analysis; D010636:Phenols
D002021:Buffers; D007202:Indicators and Reagents; D010636:Phenols; D000641:Ammonia; D009584:Nitrogen