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Science

Title:		Identification of polymers as major components of atmospheric organic aerosols
Author(s):		Kalberer M; Paulsen D; Sax M; Steinbacher M; Dommen J; Prevot AS; Fisseha R; Weingartner E; Frankevich V; Zenobi R; Baltensperger U;
Address:		"Department of Chemistry and Applied Biosciences, ETH Zurich, 8053 Zurich, Switzerland. kalberer@org.chem.ethz.ch"
Journal Title:		Science
Year:		2004
Volume:		303
Issue:		5664
Page Number:		1659 - 1662
DOI:		10.1126/science.1092185
ISSN/ISBN:		1095-9203 (Electronic) 0036-8075 (Linking)
Abstract:		"Results from photooxidation of aromatic compounds in a reaction chamber show that a substantial fraction of the organic aerosol mass is composed of polymers. This polymerization results from reactions of carbonyls and their hydrates. After aging for more than 20 hours, about 50% of the particle mass consists of polymers with a molecular mass up to 1000 daltons. This results in a lower volatility of this secondary organic aerosol and a higher aerosol yield than a model using vapor pressures of individual organic species would predict"
Keywords:
Notes:		"PubMed-not-MEDLINEKalberer, M Paulsen, D Sax, M Steinbacher, M Dommen, J Prevot, A S H Fisseha, R Weingartner, E Frankevich, V Zenobi, R Baltensperger, U eng 2004/03/16 Science. 2004 Mar 12; 303(5664):1659-62. doi: 10.1126/science.1092185"