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Main Title Modeling of Chemical Transformations of SO(x) and NO(x) in the Polluted Atmosphere. An Overview of Approaches and Current Status.
Author Gillani, N. V. ;
CORP Author Washington Univ., St. Louis, MO.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1985
Report Number EPA-R-809713; EPA/600/D-85/053;
Stock Number PB85-173169
Additional Subjects Sulfur oxides ; Nitrogen oxides ; Mathematical models ; Air pollution ; Reaction kinetics ; Field tests ; Experimental design ; Assessments ; Transport properties ;
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NTIS  PB85-173169 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 38p
Abstract Two principal approaches are identified in the modeling of chemical transformations of SOx and NOx in the polluted atmosphere. The fundamental approach involves simulation of the detailed chemical kinetics of the SOx-NOx-HC system; in the empirical approach, relatively simple parameterizations of the bulk rates of conversion of precursors to secondary products are sought in terms of environmental factors which, based on laboratory and field measurements appear to control these rates. In this paper, the principal features of both approaches are described in the form of an overview, with examples of the main results. An assessment is made of the current state of development of both methods, particularly within the context of their applicability in regional transport-transformation models. A brief overview is also presented of the controversial question of linearity of the transformation module with respect to the precursor emissions.
PUB Date Free Form Mar 85
Category Codes 13B; 68A
NTIS Prices PC A03/MF A01
Primary Description 600/09
Document Type NT
Cataloging Source NTIS/MT
Control Number 515815823
Origin NTIS
Type CAT