Record Display for the EPA National Library Catalog

RECORD NUMBER: 10 OF 18

OLS Field Name OLS Field Data
Main Title Integrating Nephelometer Response Corrections for Bimodal Size Distributions.
Author Hasan, H. ; Lewis, C. W. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1983
Report Number EPA/600/J-83/305;
Stock Number PB85-224525
Additional Subjects Nephelometers ; Atmospheric scattering ; Air pollution ; Absorptivity ; Correction ; Reprints ; Extinction coefficients ; Atmospheric transmissivity
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB85-224525 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 13p
Abstract
Correction factors are calculated for obtaining true scattering extinction coefficients from integrating nephelometer measurements. The corrections are based on the bimodal representation of ambient aerosol size distributions, and take account of the effects of angular truncation and sampling efficiency cutoff. Numerical values of correction factors appropriate to the conventional governing equation of the integrating nephelometer are shown to be indistinguishable from those of the more complex governing equation of Rabinoff and Herman.