Laboratory studies of sticking coefficients and heterogeneous reactions important in the Antarctic stratosphere

Details Laboratory studies of sticking coefficients and heterogeneous reactions important in the Antarctic stratosphere Laboratory studies of sticking coefficients and heterogeneous reactions important in the Antarctic stratosphere

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15...17l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 15, Jan. 1988, p. 17-20. NASA-supported research.

Mathematics

Probability

78

Antarctic Regions, Atmospheric Chemistry, Atmospheric Composition, Reaction Kinetics, Stratosphere, Chemical Composition, Chlorofluoromethane, Ice, Ice Clouds, Ozone Depletion

Scientific paper

Laboratory studies of sticking coefficients of H2O, HCl, Cl2, and HNO3 on ice and heterogeneous reactions of ClONO2 with ice or HCl/ice have been performed in a fast flow reactor. A quadrupole mass spectrometer with electron impact ionization was used as a detector. Measured sticking coefficients are: 0.3 (+0.7, -0.1) for H2O, 0.4 (+0.6, -0.2) for HCL, less than 0.0001 for Cl2, and 0.3 (+0.7, -0.1) for HNO3 at 200 K. The reaction probability of ClONO2 on ice was found to be 0.06 (+ or - 0.03) while HOCl was observed as a sole product in the gas phase. With HCl present in ice, the reaction probability of ClONO2 is greatly enhanced, approaching 0.27 (+0.73, -0.13) while molecular chlorine was found to be the major product in the gas phase. Another reaction product was nitric acid which remained in the solid phase. Since the polar stratospheric clouds contain ice particles or possibly HCl/ice particles on the surface, the present results should be a major factor in producing the observed springtime ozone depletion in the Antarctic stratosphere.

Affiliated with

Also associated with

No associations

Rating

Laboratory studies of sticking coefficients and heterogeneous reactions important in the Antarctic stratosphere does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Laboratory studies of sticking coefficients and heterogeneous reactions important in the Antarctic stratosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laboratory studies of sticking coefficients and heterogeneous reactions important in the Antarctic stratosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1046811