Record Display for the EPA National Library Catalog
RECORD NUMBER: 539 OF 1075Main Title | Improved Method for Measuring Aerosol Strong Acidity: Results from a Nine-Month Study in St. Louis, Missouri and Kingston, Tennessee. | |||||||||||
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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 | |||||||||||
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Collation | 8p | |||||||||||
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.) |