Record Display for the EPA National Library Catalog

RECORD NUMBER: 14 OF 18

OLS Field Name OLS Field Data
Main Title Nitric Acid-Air Diffusion Coefficient: Experimental Determination.
Author Durham, J. L. ; Stockburger, L. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1986
Report Number EPA/600/J-86/289;
Stock Number PB87-175048
Additional Subjects Air pollution ; Nitric acid ; Reprints ; Diffusion coefficient
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB87-175048 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 8p
Abstract
Trace gaseous HNO3 in air is removed in a laminar flow nylon tube. The HNO3 deposition pattern was obtained by sectioning the tube, extracting with an aqueous solution, and measuring the concentration by ion chromatography. Mass transport analysis of the deposition pattern demonstrated the HNO3 was removed from the air stream at a rate controlled by gaseous diffusion. The HNO3-air diffusion coefficient = 0.116 + or - 0.003 sq cm/s (n = 7) for t = 298 K and p = 1 atm. It exhibited no dependence on relative humidity over the range 5 - 95%.