Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Comparison of an Optical Particle Size Monitor and a Cascade Impactor for In-Stack Source Testing.
Author Conner, W. D. ; Knapp, K. T. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1985
Report Number EPA/600/J-85/481;
Stock Number PB87-178794
Additional Subjects Optical measuring instruments ; Particle size ; Emissions ; Measurement ; Size determination ; Particle size distribution ; Chimneys ; Reprints ; Impactors
Library Call Number Additional Info Location Last
NTIS  PB87-178794 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 7p
Particle size measurements by a prototype in-stack optical particle size monitor are compared to concurrent particle size measurements by an in-stack cascade impactor at three coal-fired fly ash sources. The results indicate that the optical monitor and impactor size measurements defined similar particle size distributions between 0.2 and 20 micrometers. Particles smaller than 0.2 micrometers as expected, were not observed by the optical sizer. Particles larger than 20 micrometers were also not expected to be detectable but the optical instrument may have some sensitivity to the larger-size particles. Mean size measurements by the optical instrument were always larger than similar measurements by the impactor.