Articles | Volume 21, issue 13
Atmos. Chem. Phys., 21, 10589–10608, 2021
https://doi.org/10.5194/acp-21-10589-2021
Atmos. Chem. Phys., 21, 10589–10608, 2021
https://doi.org/10.5194/acp-21-10589-2021

Research article 14 Jul 2021

Research article | 14 Jul 2021

Tracer-based source apportioning of atmospheric organic carbon and the influence of anthropogenic emissions on secondary organic aerosol formation in Hong Kong

Yubo Cheng et al.

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Latest update: 23 Sep 2021
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Short summary
We conducted chemical characterization and source apportionment of PM2.5 in Hong Kong. Secondary formation was the leading contributor to organic carbon (OC) throughout the year. NOx processing played a key role in both daytime and nighttime secondary organic aerosol (SOA) production, and monoterpene SOA was the most abundant. Sulfate was positively related to total and secondary sulfate-related OC, and particle acidity was significantly correlated with SOC from aging of biomass burning.
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