Record Display for the EPA National Library Catalog


Main Title Improved Representation of the Reaction of N2O5 on Aerosols for Mesoscale Air Quality Models.
Author Pleim, J. E. ; Binkowski, F. S. ; Ching, J. K. S. ; Dennis, R. L. ; Gillani, N. V. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. ;North Carolina State Univ. at Raleigh. ;National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div.
Publisher 1993
Year Published 1993
Report Number EPA/600/A-94/004;
Stock Number PB94-140803
Additional Subjects Photochemical reactions ; Nitrogen oxides ; Atmosphere models ; Air pollution ; Aerosols ; Atmospheric chemistry ; Troposphere ; Nitric acid ; Sulfates ; Humidity ; Surface area ; Computerized simulation ; Night ; Point sources ; RADM(Regional Acid Deposition Model)
Library Call Number Additional Info Location Last
NTIS  PB94-140803 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 19p
An important mechanism for the conversion of NO2 to HNO3, and hence the termination of photochemically active NOx, involves nighttime reactions of NO3 and N2O5. A key step in this chemical pathway is the heterogeneous reaction of N2O5 with H2O to form HNO3. The rate of this reaction has been found to be proportional to the surface area of ambient wetted aerosols. The paper describes a simple technique for estimating the rate of this reaction using sulfate concentration and relative humidity to estimate aerosol surface area. The scheme for computing the N2O5 rate coefficient is tested in the Regional Acid Deposition Model (RADM).