Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Data Reduction Techniques for Aerosol Size Distribution Measuring Instruments.
Author Kapadia, Abde ;
CORP Author Minnesota Univ., Minneapolis. Particle Technology Lab.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1980
Report Number PUB-413; EPA-R-804600; ESRL-RTP-481;
Stock Number PB81-214298
Additional Subjects Particle size distribution ; Monitors ; Air pollution ; Aerosols ; Calibrating ; Exhaust emissions ; Concentration(Composition) ; Thesis ; Electric batteries ; Diffusion coefficient ; Air pollution detection
Library Call Number Additional Info Location Last
NTIS  PB81-214298 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 297p
Data reduction methods for the electrical aerosol analyzer (EAA) and the diffusion battery+condensation nuclei counter (DB+CNC) are presented. Both the EAA and DB+CNC can be modeled by the Fredholm Integral Equation of the First Kind. Thus, the data reduction methods for both the instruments are similar. The data reduction methods for both the instruments were analyzed with simulated and experimental data. For the EAA, the comparison between the different data reduction methods for the number distribution is excellent. The agreement between the number distribution retrieved by the three data reduction methods for the DB+CNC was found to be good. Finally, it was shown that for large number mean diameters, the response of the diffusion battery does not change significantly with a considerable change in the dispersion parameter, sigma(g). Thus, the resolution of sigma(g) with the diffusion battery is poor.