Secondary organic aerosols from anthropogenic and biogenic precursors

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.

Schlagwörter

Fachgebiet (DDC)

550 - Geowissenschaften

Projekt

Veranstaltung

Startdatum der Ausstellung

Enddatum der Ausstellung

Startdatum der Konferenz

Enddatum der Konferenz

Datum der letzten Prüfung

ISBN

ISSN

1359-6640
1364-5498

Sprache

Englisch

Während FHNW Zugehörigkeit erstellt

Nein

Publikationsstatus

Veröffentlicht

Begutachtung

Peer-Review der ganzen Publikation

Open Access-Status

Closed

Lizenz

Zitation

BALTENSPERGER, Urs, Markus KALBERER, Josef DOMMEN, Dwane PAULSEN, M. Rami ALFARRA, Hugh COE, Rebeka FISSEHA, Astrid GASCHO, Martin GYSEL, Stephan NYEKI, Mirjam SAX, Martin STEINBACHER, André S.H. PRÉVÔT, Staffan SJÖGREN, Ernest WEINGARTNER und Renato ZENOBI, 2005. Secondary organic aerosols from anthropogenic and biogenic precursors. Faraday Discussions. 2005. Bd. 130, S. 265–278. DOI 10.1039/b417367h. Verfügbar unter: https://irf.fhnw.ch/handle/11654/46763

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