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Title: Vapour pressures of H2SO4/HNO3/HCI/HBr/H2O solutions to low stratospheric temperatures

Vapor pressures of H2O, HNO3, HCl and HBr over supercooled aqueous mixtures with sulfuric acid have been calculated using an activity coefficient model, for 185 K less than T less than 235 K, 0 less than wt% (H2SO4) + wt% (HNO3) less than 70, and assuming HCl and HBr to be minor constituents. Predicted vapor pressures agree well with most laboratory data, and give confidence in the validity of the model. The results are parameterized as simple formulae, which reproduce the model results to within 40% and cover the entire stratospherically relevant range of composition and temperature.
Authors:
; ; ;  [1]
  1. Max-Planck-Inst. fuer Chemie, Mainz (Germany)|[Univ. of East Anglia, Norwich (United Kingdom)
Publication Date:
OSTI Identifier:
57426
Resource Type:
Journal Article
Resource Relation:
Journal Name: Geophysical Research Letters; Journal Volume: 22; Journal Issue: 3; Other Information: PBD: Feb 1995
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; OZONE; REMOTE SENSING; STRATOSPHERE; EARTH ATMOSPHERE; AIR POLLUTION; AEROSOLS; SULFATES