Articles | Volume 19, issue 18
https://doi.org/10.5194/acp-19-11635-2019
https://doi.org/10.5194/acp-19-11635-2019
Research article
 | 
17 Sep 2019
Research article |  | 17 Sep 2019

Investigation of the α-pinene photooxidation by OH in the atmospheric simulation chamber SAPHIR

Michael Rolletter, Martin Kaminski, Ismail-Hakki Acir, Birger Bohn, Hans-Peter Dorn, Xin Li, Anna Lutz, Sascha Nehr, Franz Rohrer, Ralf Tillmann, Robert Wegener, Andreas Hofzumahaus, Astrid Kiendler-Scharr, Andreas Wahner, and Hendrik Fuchs

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Short summary
Here we present a study of the photooxidation of alpha-pinene, the most abundant monoterpene, by hydroxyl radicals (OH) conducted in the simulation chamber SAPHIR under low NOx and atmospheric alpha-pinene concentrations. Yields of the main degradation products acetone, formaldehyde, and pinonaldehyde were determined and the HOx (OH + HO2) radical budget was investigated. Measurements were used to test current atmospheric models and a theory-based mechanism.
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