Articles | Volume 21, issue 9
Atmos. Chem. Phys., 21, 7099–7112, 2021
https://doi.org/10.5194/acp-21-7099-2021
Atmos. Chem. Phys., 21, 7099–7112, 2021
https://doi.org/10.5194/acp-21-7099-2021

Research article 10 May 2021

Research article | 10 May 2021

Increased primary and secondary H2SO4 showing the opposing roles in secondary organic aerosol formation from ethyl methacrylate ozonolysis

Peng Zhang et al.

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Short summary
This work highlights the opposing effects of primary and secondary H2SO4 on both secondary organic aerosol (SOA) formation and constitutes. Our findings revealed that a substantial increase in secondary H2SO4 particles promoted the SOA formation of ethyl methacrylate with increasing SO2 in the absence of seed particles. However, increased primary H2SO4 with seed acidity enhanced ethyl methacrylate uptake but reduced its SOA formation in the presence of seed particles.
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