What is NH3 and why should it be measured?

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What is NH3 and why should it be measured?

NH3 commonly referred to as ammonia, is a gaseous compound and is used in products ranging from smelling salts to agricultural fertilizers.

High concentrations of ammonia in the environment can lead to extremely damaging effects. Due to ammonia's affinity for water, it's introduction into an aquatic environment causes adverse reactions to aquatic life. Elevated concentrations of NH3 effect fish growth, respiratory function, proliferation of gill tissue, organ weights and ultimately cause fish kill. The toxicity of ammonia increases with temperature.

For Selective Catalytic Reduction (SCR) and Selective Non-Catalytic Reduction (SNCR) technologies, not monitoring NH3 can lead to high ammonia slip which can potentially contribute to problems such as the formation of ammonium salts on air preheater and other downstream surfaces, Ammonium Chloride plume from the stack, ammonia odor in fly ash and the emission of gaseous ammonia. Monitoring NH3 can also help reduce the the
need and costs associated with periodic air heater cleaning.


NH3 online continously monitoring system in waste incineration:


NH3 online continously monitoring system in ceramic factory: