The Ammonium Nitrate Particle Equivalent of NO sub(x) Emissions for Wintertime Conditions in Central California's San Joaquin Valley

Using emissions and meteorological data for winter in the San Joaquin Valley, CA, a chemical box model was used to simulate the conversion of nitric oxide and nitrogen dioxide to nitric acid. The model was used to calculate the ammonium nitrate particle equivalent of the nitrogen oxides emissions. A...

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Bibliographic Details
Published in:Atmospheric environment (1994) 2000-01, Vol.34 (27), p.4711-4717
Main Authors: Stockwell, William R, Watson, John G, Robinson, Norman F, Steiner, William, Sylte, William W
Format: Article
Language:English
Subjects:
ammonium nitrate
USA, California, San Joaquin Valley
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Summary:Using emissions and meteorological data for winter in the San Joaquin Valley, CA, a chemical box model was used to simulate the conversion of nitric oxide and nitrogen dioxide to nitric acid. The model was used to calculate the ammonium nitrate particle equivalent of the nitrogen oxides emissions. A constant yield of NH sub(4)NO sub(3) particles from HNO sub(3) was incorporated into each HNO sub(3)-producing reaction in the photochemical box model. Results indicated that 33% of the moles of emitted NO sub(x) were converted to particulate NO sub(3), which corresponded to a particle equivalent of NO sub(x) emissions of the order of 0.57 g of NH sub(4)NO sub(3) for each gram of NO sub(x) emitted. The molar ratio of the NH sub(4)NO sub(3) particles produced per mole of emitted NO sub(x) and the particle equivalent as estimated by the model was somewhat higher than the field data values.
ISSN:1352-2310