Physics
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.1087h&link_type=abstract
Geophysical Research Letters, Volume 24, Issue 9, p. 1087-1090
Physics
4
Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Cloud Physics And Chemistry
Scientific paper
Measurements of the reaction probability (γ) of N2O3 on ~60wt% H2SO4 were performed at 201 to 230 K on bulk liquids and at 230 K on aerosol particles. The bulk and aerosol results are in good agreement (less than 10% difference). The measurements on bulk liquids show very little change in γ with temperature from 201 to 230 K. HNO3 was added to the bulk liquids at ~201K and to aerosol particles at 230 K (the H2SO4-content was decreased to keep water activity approximately constant). For [HNO3] levels of 1-to-15 wt%, the N2O5 reaction probability decreased by ~15% from that measured on HNO3-free 60 wt% H2SO4. For 60 wt% H2SO4 aerosol in the stratosphere ([HNO3]~0.3wt%) the decrease in the N2O5 hydrolysis reaction probability due to HNO3 would be small.
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