||Dynamics of automotive sulfate emissions /
Suck, S. H. ;
de Bower, K. ;
Brock., J. R.
||Texas Univ. at Austin. Dept. of Chemical Engineering.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
|| Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Motor vehicles--Motors--Exhaust gas--Environmental aspects. ;
Air pollution ;
Sulfuric acid ;
Mathematical models ;
Exhaust emissions ;
Atmospheric diffusion ;
Transport properties ;
Particle size distribution ;
Chemical reaction ;
Numerical analysis ;
Automobile exhaust ;
Catalytic reactors(Exhaust systems) ;
AROSOL models ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||48 pages : illustrations ; 28 cm.
A preliminary assessment of the potential environmental impact of automotive sulfuric acid (or sulfate) aerosol has been made by analyzing the aerosol dynamics. This analysis leads to the prediction of ambient automotive sulfuric acid aerosol concentrations over and around a large, ten-lane highway (48 m. x 20 km.), some ten or so years hence, when almost all cars in the United States will be fitted with catalytic converters. The attachment rate of fine automotive sulfuric acid aerosols to ambient aerosols is examined. The dispersion and deposition of automotive sulfate are modelled over the highway for 'worst case' meteorology using K-theory. The neutralizing effect of ambient ammonia on sulfuric acid concentrations around the highway is examined by a direct simulation procedure for dispersion calculations. These calculations indicate that adverse environmental effects of automotive sulfuric acid emissions may be important under the stated conditions of this study.
"EPA-600/3-78-043." "April 1978." PB 280 559--NTIS. Includes bibliographical references (pages 44-45). Microfiche.