Reactivity of stratospheric aerosols to small amounts of ammonia in the laboratory environment

Details Reactivity of stratospheric aerosols to small amounts of ammonia in the laboratory environment Reactivity of stratospheric aerosols to small amounts of ammonia in the laboratory environment

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..974h&link_type=abstract

Geophysical Research Letters, vol. 7, Nov. 1980, p. 974-976.

Physics

6

Aerosols, Ammonia, Atmospheric Chemistry, Reactivity, Stratosphere, Trace Contaminants, Chemical Reactions, Sulfuric Acid

Scientific paper

Trace ammonia in laboratory air reacts easily with sulfuric acid aerosol samples to form crystalline ammonium sulfate. Argon atmospheres, however, protect sampling surfaces from ammonia contamination. It is found that atmospheric aerosols treated in this way contain only sulfuric acid. After an hour exposed to laboratory air, these same samples convert to ammonium sulfate. Aerosol particles have been collected, using argon control, to determine if the absence of crystalline sulfate is common. But so far there is no evidence that aerosols are neutralized by ammonia in the stratosphere.

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