radiello™ Passive Sampler as a Tool for the Measurement of Atmospheric Ammonia Concentrations and Dry Deposition

The National Atmospheric Deposition Program (NADP) launched the Ammonia Monitoring Network (AMoN) in 2010 but first piloted a passive sampling program beginning in 2007 with 16 test sites, experimenting with different types of passive sampling devices. Illinois Water Survey (IWS) operates as the Central Analytical Laboratory (CAL) for NADP’s AMoN and deploys and analyzes the ammonia test samples and reports the analytical data back to the NADP. Ammonia is emitted by many sources, including very important agricultural sources of fertilizer application and meat production. NADP’S AMoN provides useful information to the agricultural community to assess the fate and transport of ammonia in the atmosphere. Their goal is to measure atmospheric ammonia concentrations and estimate dry deposition over North America. The network uses the low-cost, passive diffusion sampler, radiello, deployed every two weeks to 54 locations (Figure 1) providing an integrated and quality assured measurement of ammonia in air