NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The reaction probability of N2O5 with sulfuric acid aerosols at stratospheric temperatures and compositionsWe have measured the rate of reaction of N2O5 with H2O on monodisperse, submicrometer H2SO4 particles in a low-temperature flow reactor. Measurements were carried out at temperatures between 225 K and 293 K on aerosol particles with sizes and compositions comparable to those found in the stratosphere. At 273 K, the reaction probability was found to be 0.103 +/- 0.0006, independent of H2SO4 composition from 64 to 81 wt%. At 230 K, the reaction probability increased from 0.077 for compositions near 60% H2SO4 to 0.146 for compositions near 70% H2SO4. Intermediate conditions gave intermediate results except for low reaction probabilities of about 0.045 at 260 K on aerosols with about 78% H2SO4. The reaction probability did not depend on particle size. These results imply that the reaction occurs essentially at the surface of the particle. A simple model for this type of reaction that reproduces the general trends observed is presented. the presence of formaldehyde did not affect the reaction rate.
Document ID
19950051590
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Fried, Alan
(National Center for Atmospheric Research, Boulder, CO United States)
Henry, Bruce E.
(National Center for Atmospheric Research, Boulder, CO United States)
Calvert, Jack G.
(National Center for Atmospheric Research, Boulder, CO United States)
Mozurkewich, Michael
(Centre for Atmospheric Chemistry, York Univ. North York, Canada)
Date Acquired
August 16, 2013
Publication Date
February 20, 1994
Publication Information
Publication: Journal of Geophysical Research
Volume: 99
Issue: D2
ISSN: 0148-0227
Subject Category
Meteorology And Climatology
Accession Number
95A83189
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available