Rapid formation of secondary aerosol precursors from the autoxidation of C5–C8 n-aldehydes

Barua, Shawon; Kumar, Avinash; Seal, Prasenjit; Iyer, Siddharth; Rissanen, Matti

doi:10.5194/acp-26-4711-2026

Articles | Volume 26, issue 7

https://doi.org/10.5194/acp-26-4711-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-26-4711-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 7

Research article

|

09 Apr 2026

Research article |

| 09 Apr 2026

Rapid formation of secondary aerosol precursors from the autoxidation of C₅–C₈ n-aldehydes

Shawon Barua, Avinash Kumar, Prasenjit Seal, Siddharth Iyer, and Matti Rissanen

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Cumulative views and downloads (calculated since 24 Oct 2025)

Month	HTML	PDF	XML	Total
Oct 2025	200	44	12	256
Nov 2025	176	54	30	260
Dec 2025	144	74	32	250
Jan 2026	154	52	10	216
Feb 2026	88	60	2	150
Mar 2026	214	74	10	298
Apr 2026	566	117	22	705
May 2026	158	53	5	216
Jun 2026	39	9	6	54
Jul 2026	98	49	18	165
Aug 2026	58	32	7	97
Sep 2026	25	13	7	45

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Short summary

This work illustrates how long chain linear aldehydes have the potential to undergo atmospheric autoxidation and lead to prompt formation of condensable material which subsequently contributes to aerosol formation, deteriorating the air quality of urban atmospheres. We performed laboratory experiments using state-of-the-art mass spectrometry technique combined with a flow reactor under atmospheric conditions to resolve the autoxidation mechanism of n-aldehydes initiated by a common oxidant.