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Volume 130, 2005
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Secondary organic aerosols from anthropogenic and biogenic precursors

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Secondary organic aerosol (SOA) formation from the photooxidation of an anthropogenic (1,3,5-trimethylbenzene) and a biogenic (α-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.

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Publication details

The article was received on 16 Nov 2004, accepted on 07 Feb 2005 and first published on 17 May 2005

Article type: Paper
DOI: 10.1039/B417367H
Citation: Faraday Discuss., 2005,130, 265-278
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    Secondary organic aerosols from anthropogenic and biogenic precursors

    U. Baltensperger, M. Kalberer, J. Dommen, D. Paulsen, M. R. Alfarra, H. Coe, R. Fisseha, A. Gascho, M. Gysel, S. Nyeki, M. Sax, M. Steinbacher, A. S. H. Prevot, S. Sjögren, E. Weingartner and R. Zenobi, Faraday Discuss., 2005, 130, 265
    DOI: 10.1039/B417367H

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