Formation and Transformation of Secondary Organic Aerosol

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• Prof. Urs Baltensperger, Laboratory of Atmospheric Chemistry Paul Scherrer Institut, Switzerlzand.
• Thursday 05 February 2009, 14:00-15:00
• Pfizer Lecture Theatre, Department of Chemistry.

If you have a question about this talk, please contact Dr Francis Pope.

Organic aerosols (OA) comprise a large fraction of the total atmospheric aerosol. There is considerable uncertainty about the fractions of primary and secondary organic aerosol (POA and SOA , respectively). In addition, models generally underestimate the measured ambient OA concentrations by factors of up to 100. A major reason for this discrepancy is our incomplete understanding of the formation and transformation of secondary organic aerosol. Smog chambers are a highly suitable means to obtain the required knowledge on SOA . This talk will present an overview of the research performed at the PSI smog chamber. Nucleation as well as various aging processes will be covered.

This talk is part of the Centre for Atmospheric Science seminars, Chemistry Dept. series.

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