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Hydrophilic properties of aged soot
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington, USA
The global presence of soot has significant effects on regional and global climate, as well as human health. Influence of soot on radiation budget, rain formation and heterogeneous chemistry, and its residence time in the atmosphere are largely dependent on its ability to interact with water. While freshly emitted soot is extremely hydrophobic, oxidation during aging causes soot to become more hydrophilic. Laboratory studies demonstrate that aged soot attracts and retains water, and can be efficiently removed from the troposphere by entrapment in existing liquid cloud droplets or by activation as cloud condensation nuclei.
Received 14 September 2004; accepted 6 December 2004; published 8 January 2005.
Citation: (2005), Hydrophilic properties of aged soot, Geophys. Res. Lett., 32, L01807, doi:10.1029/2004GL021496.
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