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Main Title Improved Method for Measuring Aerosol Strong Acidity: Results from a Nine-Month Study in St. Louis, Missouri and Kingston, Tennessee.
Author Koutrakis, P. ; Wolfson, J. M. ; Spengler., J. D. ;
CORP Author Harvard School of Public Health, Boston, MA. ;Health Effects Research Lab., Research Triangle Park, NC.
Publisher c1988
Year Published 1988
Report Number EPA-R-811650; EPA/600/J-88/527;
Stock Number PB90-245259
Additional Subjects Aerosols ; Acidity ; Oxidation ; Atmospheric chemistry ; Sample preparation ; pH ; Ozone ; Nitric acid ; Sulfuric acid ; Reprints ; Air pollution detection ; Saint Louis(Missouri) ; Kingston(Tennessee) ; Case studies
Library Call Number Additional Info Location Last
NTIS  PB90-245259 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
An improved method for measuring strong acidity of atmospheric aerosols is presented. An ammonia diffusion denuder was developed to prevent neutralization of the acidic aerosol samples. In addition, a new procedure for protecting samples during shipment and analysis was used. An increase in the sensitivity of the analysis was achieved by extraction of the aerosol sample in a small solution volume, 3 ml, of .0001 N HClO4, and the use of a microelectrode for pH determination. Finally, results from a nine-month study in St. Louis, Missouri and Kingston, Tennessee are given. (Copyright (c) 1988 Pergamon Journals Ltd.)