| Title: | Secondary organic aerosols from anthropogenic and biogenic precursors |
| Author(s): | Baltensperger U; Kalberer M; Dommen J; Paulsen D; Alfarra MR; Coe H; Fisseha R; Gascho A; Gysel M; Nyeki S; Sax M; Steinbacher M; Prevot AS; Sjogren S; Weingartner E; Zenobi R; |
| Address: | "Laboratory of Atmospheric Chemistry, Paul Scherrer Institut, 5232, Villigen, Switzerland" |
| ISSN/ISBN: | 1359-6640 (Print) 1359-6640 (Linking) |
| Abstract: | "Secondary organic aerosol (SOA) formation from the photooxidation of an anthropogenic (1,3,5-trimethylbenzene) and a biogenic (alpha-pinene) precursor was investigated at the new PSI smog chamber. The chemistry of the gas phase was followed by proton transfer reaction mass spectrometry, while the aerosol chemistry was investigated with aerosol mass spectrometry, ion chromatography, laser desorption ionization mass spectrometry, and infrared spectroscopy, along with volatility and hygroscopicity studies. Evidence for oligomer formation for SOA from both precursors was given by an increasing abundance of compounds with a high molecular weight (up to 1000 Da) and by an increasing thermal stability with increasing aging time. The results were compared to data obtained from ambient aerosol samples, revealing a number of similar features" |
| Keywords: | "Aerosols/*analysis/chemistry Air Pollutants/analysis/chemistry Benzene Derivatives/*analysis Bicyclic Monoterpenes Chromatography, Ion Exchange Molecular Weight Monoterpenes/*analysis Oxidants, Photochemical/*chemistry Ozone/*analysis/chemistry Spectrum A;" |
| Notes: | "MedlineBaltensperger, U Kalberer, M Dommen, J Paulsen, D Alfarra, M R Coe, H Fisseha, R Gascho, A Gysel, M Nyeki, S Sax, M Steinbacher, M Prevot, A S H Sjogren, S Weingartner, E Zenobi, R eng Research Support, Non-U.S. Gov't England 2005/09/16 Faraday Discuss. 2005; 130:265-78; discussion 363-86, 519-24. doi: 10.1039/b417367h" |
