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RECORD NUMBER: 32 OF 33

OLS Field Name OLS Field Data
Main Title Urban Aerosol Transformation and Transport Modeling.
Author Seo, Y. ; Brock, J. R. ;
CORP Author Texas Univ. at Austin. Dept. of Chemical Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher Feb 90
Year Published 1990
Report Number EPA-R-811946; EPA/600/3-90/017;
Stock Number PB90-187170
Additional Subjects Aerosols ; Urban areas ; Mathematical models ; Air pollution ; Particle size ; Photochemical reactions ; Chemical bonds ; Kinetics ; Ammonium ; Graphs(Charts) ; Concentration(Composition) ; Sulfates ; Inorganic nitrates ; Atmospheric chemistry ; AROSOL model
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB90-187170 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/15/1990
Collation 51p
Abstract
Modules for secondary aerosol formation included in the urban scale K-theory aerosol model, AROSOL are: An empirical first-order SO2 conversion scheme, termed EMM; The lumped parameter kinetic model termed the Carbon Bond Mechanism, in the version CBM-IV; The lumped parameter kinetic model termed the Atkinson Lloyd Mechanism, in the 1985 ERT version; The equilibrium Model for an Aerosol Reacting System (MARS) for prediction of equilibrium partition of nitrates, sulfates, and ammonium between the gas and aerosol phases; The Binary Aerosol Dynamics Model for nucleation and growth of secondary aerosol. The modules for secondary sulfate and nitrate formation have been demonstrated with data from the 1982 Philadelphia Aerosol Field Study. Both EMM and CBM give similar secondary sulfate concentrations. EMM was found to give secondary sulfate concentrations around ten times those with CBM. MARS was used to demonstrate secondary sulfate speciation from the conversions given by CBM. From the CBM calculations, nitrate speciation calculated by MARS was also obtained.