Heterogeneous Atmospheric Aerosol Production by Acid-Catalyzed Particle-Phase Reactions
Top Cited Papers
- 25 October 2002
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 298 (5594) , 814-817
- https://doi.org/10.1126/science.1075798
Abstract
According to evidence from our laboratory, acidic surfaces on atmospheric aerosols lead to potentially multifold increases in secondary organic aerosol (SOA) mass. Experimental observations using a multichannel flow reactor, Teflon (polytetrafluoroethylene) film bag batch reactors, and outdoor Teflon-film smog chambers strongly confirm that inorganic acids, such as sulfuric acid, catalyze particle-phase heterogeneous reactions of atmospheric organic carbonyl species. The net result is a large increase in SOA mass and stabilized organic layers as particles age. If acid-catalyzed heterogeneous reactions of SOA products are included in current models, the predicted SOA formation will be much greater and could have a much larger impact on climate forcing effects than we now predict.Keywords
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