Record Display for the EPA National Library Catalog

RECORD NUMBER: 25 OF 25

OLS Field Name OLS Field Data
Main Title Tungstic Acid for Preconcentration and Determination of Gaseous and Particulate Ammonia and Nitric Acid in Ambient Air.
Author Braman, Robert S. ; Shelley, Timothy J. ; McClenny, William A. ;
CORP Author University of South Florida, Tampa.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1982
Report Number EPA-R-806688; EPA-600/J-81-463;
Stock Number PB83-191213
Additional Subjects Gas analysis ; Air pollution ; Ammonia ; Nitric acid ; Aerosols ; Tungstic acids ; Chemical analysis ; Chemisorption ; Concentration(Composition) ; Reprints ; Air pollution detection ; Thermal desorption
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB83-191213 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 9p
Abstract
Tungstic acid surfaces chemisorb NH3 and HNO3. Collection of these gases is possible by sampling with a hollow tube the interior of which is coated with tungstic acid. Thermal desorption followed by a simple separation and detection by a chemiluminescent NOx analyzer permits analyses at the ppb and lower concentration range for gaseous and particulate forms of the analytes.