Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Acid Aerosol Measurement Methods: A Summary of U.S. EPA Intercomparisons.
Author Ellestad, T. G. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 1993
Year Published 1993
Report Number EPA/600/A-93/170;
Stock Number PB93-221885
Additional Subjects Air pollution sampling ; Interlaboratory comparisons ; Aerosols ; Acidity ; Photochemical oxidants ; Ammonium sulfates ; Ammonium nitrates ; Sulfuric acid ; Comparative analysis ; Quality assurance ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB93-221885 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 11/22/1993
Collation 8p
Studies of human exposure to acid aerosols have been underway for several years, leading to the need to intercompare measurement methods for acidic aerosol concentrations. Over the past few years the U.S. EPA has sponsored several intercomparisons of the methods in use. The studies have included single component aerosols of sulfuric acid and ammonium bisulfate, photochemical aerosols, a sequence of compounds chosen to test for on-filter neutralization by ammonium nitrate, the addition of alkaline dust, laboratory-spiked samples, and atmospheric aerosol samples. These studies were designed to establish both intra- and interlaboratory precision and to attempt to separate the effects of differences in flow rate, extraction, and analysis.