Articles | Volume 25, issue 18
https://doi.org/10.5194/acp-25-11441-2025
https://doi.org/10.5194/acp-25-11441-2025
Research article
 | 
26 Sep 2025
Research article |  | 26 Sep 2025

Initiation of linoleic acid autoxidation with ozone exposure in levitated aerosol particles

Marcel Müller, Marcel Reichmuth, and Ulrich K. Krieger

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Cited articles

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Broekhuizen, K. E.: Formation of cloud condensation nuclei by oxidative processing: Unsaturated fatty acids, J. Geophys. Res., 109, D24206, https://doi.org/10.1029/2004JD005298, 2004. a
Chu, Y., Cheng, T. F., Gen, M., Chan, C. K., Lee, A. K. Y., and Chan, M. N.: Effect of Ozone Concentration and Relative Humidity on the Heterogeneous Oxidation of Linoleic Acid Particles by Ozone: An Insight into the Interchangeability of Ozone Concentration and Time, ACS Earth and Space Chemistry, 3, 779–788, https://doi.org/10.1021/acsearthspacechem.9b00002, 2019. a, b, c
Criegee, R.: Mechanism of Ozonolysis, Angew. Chem. Int. Edit., 14, 745–752, https://doi.org/10.1002/anie.197507451, 1975. a
Goldstein, B. D., Balchum, O. J., Demopoulos, H. B., and Duke, P. S.: Electron Paramagnetic Resonance Spectroscopy, Arch. Environ. Health, 17, 46–49, https://doi.org/10.1080/00039896.1968.10665187, 1968. a
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Short summary
The initiation of autoxidation by ozonolysis was investigated on levitated linoleic acid droplets using electrodynamic balance–mass spectrometry. Exposing the droplets to ozone for 1 h before switching the gas phase to air without ozone led to a shortening of the autoxidation initiation phase in comparison to experiments without ozone exposure. Results were compared to a bulk reaction model to investigate the synergistic effects of ozonolysis and autoxidation.
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