Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Modified Factor Analysis of Selected RAPS (Regional Air Pollution Study) Aerosol Data.
Author Alpert, Daniel J. ; Hopke, Philip K. ;
CORP Author Illinois Univ. at Urbana-Champaign. Inst. for Environmental Studies.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1980
Report Number EPA-600/2-80-195;
Stock Number PB81-120784
Additional Subjects Factor analysis ; Aerosols ; Air pollution ; Sampling ; Particles ; Concentration(Composition) ; Sites ; Saint Louis(Missouri) ; Air quality data ; Numerical solution
Library Call Number Additional Info Location Last
NTIS  PB81-120784 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 85p
Target transformation factor analysis (TTFA) has been applied to an analysis of a subset of the aerosol-composition data acquired during the Regional Air Pollution Study (RAPS) for St. Louis, MO. The purpose of the study was to evaluate the capability of TTFA to resolve sources of airborne particulate matter in a set of ambient-aerosol samples. Only the samples from July and August 1976, both fine and coarse fractions, were examined in this study. Because of the large number of different sources in the St. Louis area, superior results were obtained from the examination of the variation in aerosol composition with time at a single location rather than the spatial variation of over multiple sites during a shorter time period.