Highly oxygenated molecules (HOMs) and secondary organic aerosol (SOA) formation from the oxidation of α- and β-phellandrenes by NO3 radicals

Harb, Sergio; Cirtog, Manuela; Alage, Stéphanie; Cantrell, Christopher; Cazaunau, Mathieu; Michoud, Vincent; Pangui, Edouard; Bergé, Antonin; Giorio, Chiara; Battaglia, Francesco; Picquet-Varrault, Bénédicte

doi:https://doi.org/10.5194/acp-25-11003-2025

Articles | Volume 25, issue 18

https://doi.org/10.5194/acp-25-11003-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Atmospheric Chemistry of the Suburban Forest – multiplatform...

https://doi.org/10.5194/acp-25-11003-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 18

Research article

|

23 Sep 2025

Research article |

| 23 Sep 2025

Highly oxygenated molecules (HOMs) and secondary organic aerosol (SOA) formation from the oxidation of α- and β-phellandrenes by NO₃ radicals

Sergio Harb, Manuela Cirtog, Stéphanie Alage, Christopher Cantrell, Mathieu Cazaunau, Vincent Michoud, Edouard Pangui, Antonin Bergé, Chiara Giorio, Francesco Battaglia, and Bénédicte Picquet-Varrault

Supplement

https://doi.org/10.5194/acp-25-11003-2025-supplement

Data sets

Datasets -- $\alpha$-phellandrene + NO$_{3}$ and $\beta$-phellandrene + NO$_{3}$ Harb et al. (2025) https://doi.org/10.25326/5YN0-1W57, 10.25326/PXSZ-XR67, 10.25326/CKCJ-QR33, 10.25326/JTRR-EE28, 10.25326/M36W-ZJ03, 10.25326/V5EM-FF81, 10.25326/3SCB-0375, 10.25326/2KKN-QD92, 10.25326/65RN-Z588, 10.25326/DFTY-QP93, 10.25326/5EW9-P922, 10.25326/6V1S-2698, 10.25326/1QJ4-Z433

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Short summary

We investigated the reactions of α- and β-phellandrenes (from vegetation emissions) with NO₃ radicals, a major nighttime oxidant from human activities. Using lab-based simulations, we examined these reactions and measured particle formation and by-products. Our findings reveal that α- and β-phellandrenes are efficient particle sources and enhance our understanding of biogenic–anthropogenic interactions and their contributions to atmospheric changes affecting climate and health.