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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Cited articles

Aimanant, S. and Ziemann, P. J.: Chemical mechanisms of aging of aerosol formed from the reaction of n-pentadecane with OH radicals in the presence of NOx, Aerosol Sci. Tech., 47, 979–990, https://doi.org/10.1080/02786826.2013.804621, 2013. 
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Boyd, C. M., Nah, T., Xu, L., Berkemeier, T., and Ng, N. L.: Secondary organic aerosol (SOA) from nitrate radical oxidation of monoterpenes: Effects of temperature, dilution, and humidity on aerosol formation, mixing, and evaporation, Environ. Sci. Technol., 51, 7831–7841, https://doi.org/10.1021/acs.est.7b01460, 2017. 
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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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