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

Abstract - 1 3) with or without NO2. In the presence of NO2, the SOA yields decreased by more than a factor of 2, but the mass absorption coefficient at 365 nm (MAC365) of ind-SOA was 4.3 ± 2  g- 1 2. In the presence of NO2, C8 H6 N2 O2 (identified as 3-nitroindole) contributed 76 % to all organic compounds detected by a chemical ionization mass spectrometer, contributing ∼ 365). In the absence of NO2, the dominating chromophore was C8 H7 O3 N, contributing to 20 %–30 % of Abs365. Indole contributes substantially to the formation of secondary BrC and its potential impact on the atmospheric radiative transfer is further enhanced in the presence of NO2, as it significantly increases the specific light absorption of ind-SOA by facilitating the formation of 3-nitroindole. This work provides new insights into an important process of brown carbon formation by interaction of two pollutants, NO2 and indole, mainly emitted by anthropogenic activities.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Molecular analysis of secondary organic aerosol and brown carbon from the oxidation of indole ; volume:24 ; number:4 ; year:2024 ; pages:2639-2649 ; extent:11 ; Atmospheric chemistry and physics ; 24, Heft 4 (2024), 2639-2649 (gesamt 11)

Contributors, Places and Time

• Creator: Jiang, Feng ; Siemens, Kyla ; Linke, Claudia ; Li, Yanxia ; Gong, Yiwei ; Leisner, Thomas ; Laskin, Alexander ; Saathoff, Harald

Further information

• DOI: 10.5194/acp-24-2639-2024
• URN: urn:nbn:de:101:1-2024030703291368625790
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:57 AM CEST