Heterogeneous Reaction Probabilities, Solubilities, and the Physical State of Cold Volcanic Aerosols
- 27 August 1993
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 261 (5125) , 1136-1140
- https://doi.org/10.1126/science.261.5125.1136
Abstract
On 19 January 1992, heterogeneous loss of HNO3, ClNO3, and HCl was observed in part of the Mount Pinatubo volcanic cloud that had cooled as a result of forced ascent. Portions of the volcanic cloud froze near 191 kelvin. The reaction probability of ClNO3 and the solubility of HNO3 were close to laboratory measurements on liquid sulfuric acid. The magnitude of the observed loss of HCl suggests that it underwent a heterogeneous reaction. Such reactions could lead to substantial loss of HCl on background sulfuric acid particles and so be important for polar ozone loss.Keywords
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