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RECORD NUMBER: 319 OF 1007

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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

Holdings

Library	Call Number	Additional Info	Location	Last Modified	Checkout Status
NTIS	PB90-245259	Some EPA libraries have a fiche copy filed under the call number shown.		07/26/2022

Collation

Abstract

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.)

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