Ammonia (NH₃) is the highest abundant alkaline gas in the atmosphere, and it is a major contributor to total reactive nitrogen in the environment and causes long-term climate change problems. NH₃ is also a hazardous pollutant with detrimental impacts on human health that demands strict control over personal exposure levels. High-precision quantification of NH₃ is demanded for routine monitoring, regulation compliance, and migration needs. Accurate monitoring of NH₃ emissions can be challenging at low levels (ppb to ppm) due to the high reactivity of NH₃ and its tendency to adsorb to surfaces. In this poster, Picarro shares results of experiments to characterize the performance of the new SI2103 NH₃ analyzer, including:

- Investigating the effect of measured concentration on the SI2103 analyzer’s response times.

- Validating the extended operation range mode for NH₃ concentration up to 50 ppm.