Record Display for the EPA National Library Catalog


Main Title Target Transformation Factor Analysis as an Aerosol Mass Apportionment Method: A Review and Sensitivity Study (Journal Version).
Author Hopke, P. K. ;
CORP Author Illinois Univ. at Urbana-Champaign. Inst. for Environmental Studies.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Publisher c1988
Year Published 1988
Report Number EPA-68-02-3449; EPA/600/J-88/213;
Stock Number PB89-134712
Additional Subjects Aerosols ; Atmospheric diffusion ; Mathematical models ; Computerized simulation ; Statistical analysis ; Predictions ; Errors ; Accuracy ; Air pollution control ; Reprints ; Point sources ; Particulates ; Path of pollutants
Library Call Number Additional Info Location Last
NTIS  PB89-134712 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 19p
Over the past several years, a multivariate receptor model called Target Transformation Factor Analysis (TTFA) has been applied to various problems of environmental source resolution. In recent reports on the analysis of data sets with known structure, good results were obtained. In order to further test the TTFA approach, additional simulated data sets have been created with varying degrees of collinearity of the source profiles and normally distributed uncertainty. The effect of the collinearity is to restrict the number of resolvable sources. The analytical error affects the identification of the number of sources and development of accurate profiles. (Copyright (c) 1988 Pergamon Press.)