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: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

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Nov 2024	123	30	6	159
Dec 2024	64	14	2	80
Jan 2025	29	6	2	37
Feb 2025	30	13	4	47
Mar 2025	18	7	0	25
Apr 2025	26	7	41	74
May 2025	21	3	49	73
Jun 2025	39	9	26	74
Jul 2025	29	12	1	42
Aug 2025	168	8	2	178
Sep 2025	1,344	24	6	1,374
Oct 2025	193	26	1	220
Nov 2025	111	32	5	148
Dec 2025	101	51	6	158
Jan 2026	127	48	9	184
Feb 2026	107	43	7	157
Mar 2026	67	91	4	162
Apr 2026	35	32	6	73

Cumulative views and downloads (calculated since 08 Nov 2024)

Month	HTML	PDF	XML	Total
Nov 2024	123	30	6	159
Dec 2024	64	14	2	80
Jan 2025	29	6	2	37
Feb 2025	30	13	4	47
Mar 2025	18	7	0	25
Apr 2025	26	7	41	74
May 2025	21	3	49	73
Jun 2025	39	9	26	74
Jul 2025	29	12	1	42
Aug 2025	168	8	2	178
Sep 2025	1,344	24	6	1,374
Oct 2025	193	26	1	220
Nov 2025	111	32	5	148
Dec 2025	101	51	6	158
Jan 2026	127	48	9	184
Feb 2026	107	43	7	157
Mar 2026	67	91	4	162
Apr 2026	35	32	6	73

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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.