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MONITORING AMBIENT AMMONIA CHEMISTRY IN AN AGRICULTURAL REGION WITH A LOW DENSITY OF ANIMAL PRODUCTION
Citation:
ROBARGE, W., J. T. WALKER, JR. K, A. SHENDRIKAR, AND H. KIMBALL. MONITORING AMBIENT AMMONIA CHEMISTRY IN AN AGRICULTURAL REGION WITH A LOW DENSITY OF ANIMAL PRODUCTION. Presented at Workshop on Agricultural Air Quality: State of the Science, Potomac, MD, June 05, 2006.
Impact/Purpose:
To inform the public.
Description:
We present several years of ambient ammonia, ammonium, hydrochloric acid, chloride, nitric acid, nitrate, nitrous acid, sulfur dioxide, and sulfate concentrations at a rural site in the Coastal Plain region of North Carolina. Also, the air chemistry of Lewiston, NC and Clinton, NC are compared. The lower ratio of average ambient ammonia and ammonium concentrations at Lewiston suggests a stronger dependence of ammonium-based PM2.5 on ammonia emissions or transport of ammonia into the Lewiston site. This work is part of a continuing effort to characterize ambient ammonia across eastern North Carolina, and to predict changes in wet and dry depositions of nitrogen across the region with changes in density of animal production facilities and the imposition of alternative technologies to reduce ammonia emissions.