Nitrosyl sulfuric acid and stratospheric aerosols

Details Nitrosyl sulfuric acid and stratospheric aerosols Nitrosyl sulfuric acid and stratospheric aerosols

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1363b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 13, July 6, 1992, p. 1363-1366.

Mathematics

Probability

20

Aerosols, Atmospheric Chemistry, Nitrosyls, Sulfuric Acid, Atmospheric Composition, Hydrochloric Acid, Reaction Kinetics, Stratosphere, Thermochemistry

Scientific paper

It is proposed on the basis of information found in the atmospheric and chemical literature that nitrosyl sulfuric acid (NSA), NOHSO4 may play an important role in stratospheric chemistry. If the reaction probability of forming NSA per collision of NO with a sulfuric acid aerosol is 0.001, 1 percent of the sulfuric acid would be converted to NSA within 1 d at 20 km altitude. If NSA in the sulfate aerosols is 1 percent of the sulfuric acid and if the second order rate constant for (HCl + NOHSO4 = H2SO4 + ClNO) in sulfuric acid solution is greater than 10 exp -18 cu cm/molecule s under conditions at 20 km altitude, the rate of HCl + NSA is faster than the rate of HO + HCl. In this case, this heterogeneous catalysis is expected to affect the balance of No sub y, Cl sub y, and the ozone in the lower stratosphere.

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