Articles | Volume 20, issue 13
https://doi.org/10.5194/acp-20-8123-2020
https://doi.org/10.5194/acp-20-8123-2020
Research article
 | 
13 Jul 2020
Research article |  | 13 Jul 2020

Temperature effects on optical properties and chemical composition of secondary organic aerosol derived from n-dodecane

Junling Li, Weigang Wang, Kun Li, Wenyu Zhang, Chao Peng, Li Zhou, Bo Shi, Yan Chen, Mingyuan Liu, Hong Li, and Maofa Ge

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Latest update: 08 Aug 2025
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Short summary
Long-chain alkanes (a large fraction of diesel fuel and its exhaust) are important potential contributors of SOA. Through the analysis of the components of formed SOA, we found that low-temperature conditions promote the oligomerization of n-dodecane, and the degree of oligomerization can reach tetramerization. The presence of the oligomers enhances the light extinction of the particles. UV-scattering particles in the boundary layer can accelerate photochemical reactions and haze production.
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