Articles | Volume 20, issue 22
Atmos. Chem. Phys., 20, 14393–14405, 2020
https://doi.org/10.5194/acp-20-14393-2020
Atmos. Chem. Phys., 20, 14393–14405, 2020
https://doi.org/10.5194/acp-20-14393-2020

Research article 27 Nov 2020

Research article | 27 Nov 2020

Direct contribution of ammonia to α-pinene secondary organic aerosol formation

Liqing Hao et al.

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Latest update: 23 Sep 2021
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Short summary
Our work presents the observational results of secondary organic aerosol (SOA) formation in the presence of ammonia. The particle-phase ammonium was continuously produced even after SOA formation had ceased. The gas-phase organic acids were observed to contribute to the formed particle-phase ammonium salts. This study suggests that the presence of ammonia may change the mass and chemical composition of large-size SOA particles and can potentially alter the aerosol impact on climate change.
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