Articles | Volume 20, issue 13
Atmos. Chem. Phys., 20, 8123–8137, 2020
https://doi.org/10.5194/acp-20-8123-2020
Atmos. Chem. Phys., 20, 8123–8137, 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 et al.

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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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