An amorphous solid state of biogenic secondary organic aerosol particles

Annele Virtanen (), Jorma Joutsensaari, Thomas Koop (), Jonna Kannosto, Pasi Yli-Pirilä, Jani Leskinen, Jyrki M. Mäkelä, Jarmo K. Holopainen, Ulrich Pöschl, Markku Kulmala, Douglas R. Worsnop and Ari Laaksonen
Additional contact information
Annele Virtanen: Tampere University of Technology, P O Box 692, 33101 Tampere, Finland
Jorma Joutsensaari: University of Eastern Finland, Kuopio Campus, P O Box 1627, 70211 Kuopio, Finland
Thomas Koop: Bielefeld University
Jonna Kannosto: Tampere University of Technology, P O Box 692, 33101 Tampere, Finland
Pasi Yli-Pirilä: University of Eastern Finland, Kuopio Campus, P O Box 1627, 70211 Kuopio, Finland
Jani Leskinen: University of Eastern Finland, Kuopio Campus, P O Box 1627, 70211 Kuopio, Finland
Jyrki M. Mäkelä: Tampere University of Technology, P O Box 692, 33101 Tampere, Finland
Jarmo K. Holopainen: University of Eastern Finland, Kuopio Campus, P O Box 1627, 70211 Kuopio, Finland
Ulrich Pöschl: Max Planck Institute for Chemistry
Markku Kulmala: University of Helsinki, P O Box 64, 00014 Helsinki, Finland
Douglas R. Worsnop: University of Eastern Finland, Kuopio Campus, P O Box 1627, 70211 Kuopio, Finland
Ari Laaksonen: University of Eastern Finland, Kuopio Campus, P O Box 1627, 70211 Kuopio, Finland

Nature, 2010, vol. 467, issue 7317, 824-827

Abstract: A phased approach to aerosols Secondary organic aerosol (SOA) particles can scatter radiation and act as cloud condensation nuclei, and thereby influence Earth's radiation balance. It is generally assumed that such particles are liquid, but this experimental study shows that they can adopt an amorphous — probably glassy — solid state under ambient conditions. The findings of the study — which monitored SOA particles formed from oxidation products of volatile organic compounds from seedlings grown in plant chambers, and used measurements made in forests following atmospheric oxidation events — challenge traditional views of the kinetics and thermodynamics of SOA formation and transformation in the atmosphere.

Date: 2010
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DOI: 10.1038/nature09455

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