Articles | Volume 24, issue 4
https://doi.org/10.5194/acp-24-2639-2024
https://doi.org/10.5194/acp-24-2639-2024
Research article
 | 
29 Feb 2024
Research article |  | 29 Feb 2024

Molecular analysis of secondary organic aerosol and brown carbon from the oxidation of indole

Feng Jiang, Kyla Siemens, Claudia Linke, Yanxia Li, Yiwei Gong, Thomas Leisner, Alexander Laskin, and Harald Saathoff

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Cited articles

Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, Atmos. Chem. Phys., 6, 3131–3148, https://doi.org/10.5194/acp-6-3131-2006, 2006. 
Atkinson, R., Tuazon, E. C., Arey, J., and Aschmann, S. M.: Atmospheric and Indoor Chemistry of Gas-phase Indole, Quinoline, and Isoquinoline, Atmos. Environ., 29, 3423–3432, https://doi.org/10.1016/1352-2310(95)00103-6, 1995. 
Baboomian, V. J., He, Q., Montoya-Aguilera, J., Ali, N., Fleming, L. T., Lin, P., Laskin, A., Laskin, J., Rudich, Y., and Nizkorodov, S. A.: Light absorption and scattering properties of indole secondary organic aerosol prepared under various oxidant and relative humidity conditions, Aerosol Sci. Tech., 57, 532–545, https://doi.org/10.1080/02786826.2023.2193235, 2023. 
Bloss, C., Wagner, V., Jenkin, M. E., Volkamer, R., Bloss, W. J., Lee, J. D., Heard, D. E., Wirtz, K., Martin-Reviejo, M., Rea, G., Wenger, J. C., and Pilling, M. J.: Development of a detailed chemical mechanism (MCMv3.1) for the atmospheric oxidation of aromatic hydrocarbons, Atmos. Chem. Phys., 5, 641–664, https://doi.org/10.5194/acp-5-641-2005, 2005. 
Erb, M., Veyrat, N., Robert, C. A. M., Xu, H., Frey, M., Ton, J., and Turlings, T. C. J.: Indole is an essential herbivore-induced volatile priming signal in maize, Nat. Commun., 6, 6273, https://doi.org/10.1038/ncomms7273, 2015. 
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Short summary
We investigated the optical properties, chemical composition, and formation mechanisms of secondary organic aerosol (SOA) and brown carbon (BrC) from the oxidation of indole with and without NO2 in the Aerosol Interaction and Dynamics in the Atmosphere (AIDA) simulation chamber. This work is one of the very few to link the optical properties and chemical composition of indole SOA with and without NO2 by simulation chamber experiments.
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