Record Display for the EPA National Library Catalog

RECORD NUMBER: 31 OF 35

OLS Field Name OLS Field Data
Main Title Photoacoustic Determination of Optical Properties of Aerosol Particles Collected on Filters: Development of a Method Taking into Account Substrate Reflectivity.
Author Roehl, R. ; McClenny, W. A. ; Palmer, R. A. ;
CORP Author Duke Univ., Durham, NC. Paul M. Gross Chemical Lab.;Environmental Sciences Research Lab., Research Triangle Park, NC.;National Science Foundation, Washington, DC.
Year Published 1982
Report Number EPA-807407 ;NSF-ATM80-05356; EPA-600/J-81-450;
Stock Number PB83-191171
Additional Subjects Optical properties ; Aerosols ; Air filters ; Air pollution ; Mathematical models ; Particles ; Soot ; Sampling ; Reprints ; Air quality ; Photoacoustic spectroscopy ; Numerical solution
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB83-191171 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 9p
Abstract
The absorptivity and imaginary index of refraction for carbon and methylene blue particles were inferred from the photoacoustic spectra of samples collected on Teflon filter substrates. Three models of varying complexity were developed to describe the photoacoustic signal as a function of filter loading and sample absorptivity.