Record Display for the EPA National Library Catalog


Main Title Intercomparison of Results of Several Receptor Models for Apportioning Houston Aerosol.
Author Dzubay, Thomas G. ; Stevens, Robert K. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1983
Report Number EPA-600/D-83-024;
Stock Number PB83-178194
Additional Subjects Air pollution ; Mathematical models ; Aerosols ; Environmental impact ; Sources ; Texas ; Comparison ; Mass ; Concentration(Composition) ; Ions ; Tables(Data) ; Air quality ; Houston(Texas)
Library Call Number Additional Info Location Last
NTIS  PB83-178194 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
Using a set of data on aerosol composition in Houston, TX, nine participants of the Quail Roost II receptor modeling workshop estimated impacts of major classes of emission sources. The data set included mass, elemental composition, and ionic composition of fine- and coarse- fraction aerosol collected at the University of Houston during 18 12-hr periods from Sept 10 to 19, 1980. Methods used to analyze this data set included chemical mass balance, ridge regression, multiple linear regression, and target transformation factor analysis. Some participants performed additional analyses using x-ray diffraction, scanning electron microscopy, and light microscopy. The number of classes detected ranged from 4 (by multiple linear regression) to 23 (by light microscopy). The results were condensed into eight general categories, intercompared, and found to agree favorably. Differences in results were associated with the use of different source profiles.