Articles | Volume 20, issue 22
Atmos. Chem. Phys., 20, 14123–14138, 2020
https://doi.org/10.5194/acp-20-14123-2020
Atmos. Chem. Phys., 20, 14123–14138, 2020
https://doi.org/10.5194/acp-20-14123-2020

Research article 20 Nov 2020

Research article | 20 Nov 2020

Measurements of higher alkanes using NO+ chemical ionization in PTR-ToF-MS: important contributions of higher alkanes to secondary organic aerosols in China

Chaomin Wang et al.

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Latest update: 29 Jul 2021
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Short summary
We utilized a novel online mass spectrometry method to measure the total concentration of higher alkanes at each carbon number at two different sites in China, allowing us to take into account SOA contributions from all isomers for higher alkanes. We found that higher alkanes account for significant fractions of SOA formation at the two sites. The contributions are comparable to or even higher than single-ring aromatics, the most-recognized SOA precursors in urban air.
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