Comparison of isoprene chemical mechanisms under atmospheric night-time conditions in chamber experiments: evidence of hydroperoxy aldehydes and epoxy products from NO3 oxidation

Carlsson, Philip T. M.; Vereecken, Luc; Novelli, Anna; Bernard, François; Brown, Steven S.; Brownwood, Bellamy; Cho, Changmin; Crowley, John N.; Dewald, Patrick; Edwards, Peter M.; Friedrich, Nils; Fry, Juliane L.; Hallquist, Mattias; Hantschke, Luisa; Hohaus, Thorsten; Kang, Sungah; Liebmann, Jonathan; Mayhew, Alfred W.; Mentel, Thomas; Reimer, David; Rohrer, Franz; Shenolikar, Justin; Tillmann, Ralf; Tsiligiannis, Epameinondas; Wu, Rongrong; Wahner, Andreas; Kiendler-Scharr, Astrid; Fuchs, Hendrik

doi:https://doi.org/10.5194/acp-23-3147-2023

Articles | Volume 23, issue 5

https://doi.org/10.5194/acp-23-3147-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-3147-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 5

Research article

|

10 Mar 2023

Research article |

| 10 Mar 2023

Comparison of isoprene chemical mechanisms under atmospheric night-time conditions in chamber experiments: evidence of hydroperoxy aldehydes and epoxy products from NO₃ oxidation

Philip T. M. Carlsson, Luc Vereecken, Anna Novelli, François Bernard, Steven S. Brown, Bellamy Brownwood, Changmin Cho, John N. Crowley, Patrick Dewald, Peter M. Edwards, Nils Friedrich, Juliane L. Fry, Mattias Hallquist, Luisa Hantschke, Thorsten Hohaus, Sungah Kang, Jonathan Liebmann, Alfred W. Mayhew, Thomas Mentel, David Reimer, Franz Rohrer, Justin Shenolikar, Ralf Tillmann, Epameinondas Tsiligiannis, Rongrong Wu, Andreas Wahner, Astrid Kiendler-Scharr, and Hendrik Fuchs

Data sets

Atmospheric simulation chamber study: isoprene + NO3 – Gas-phase oxidation – product study H. Fuchs, A. Novelli, C. Cho, F. Rohrer, R. Tillmann, D. Reimer, T. Hohaus, A. Turdziladze, P. Dewald, J. Liebmann, N. Friedrich, J. Shenolikar, J.Schuladen, J. Crowley, S. S.Brown, F. Bernard, L. Zhou, T. Mentel, R. Wu, and J. F. Hamilton https://doi.org/10.25326/PZ5Q-9X18

Atmospheric simulation chamber study: isoprene + NO3 – Gas-phase oxidation – product study H. Fuchs, A. Novelli, C. Cho, F. Rohrer, R. Tillmann, D. Reimer, T. Hohaus, A. Turdziladze, P. Dewald, J. Liebmann, N. Friedrich, J. Shenolikar, J.Schuladen, J. Crowley, S. S.Brown, F. Bernard, L. Zhou, T. Mentel, R. Wu, and J. F. Hamilton https://doi.org/10.25326/YZHF-T659

Atmospheric simulation chamber study: isoprene + NO3 – Gas-phase oxidation – product study H. Fuchs, A. Novelli, C. Cho, F. Rohrer, R. Tillmann, D. Reimer, T. Hohaus, A. Turdziladze, P. Dewald, J. Liebmann, N. Friedrich, J. Shenolikar, J.Schuladen, J. Crowley, S. S.Brown, F. Bernard, L. Zhou, T. Mentel, R. Wu, and J. F. Hamilton https://doi.org/10.25326/JCST-0Y45

Atmospheric simulation chamber study: isoprene + NO3 – Gas-phase oxidation – product study H. Fuchs, A. Novelli, C. Cho, F. Rohrer, R. Tillmann, D. Reimer, T. Hohaus, A. Turdziladze, P. Dewald, J. Liebmann, N. Friedrich, J. Shenolikar, J.Schuladen, J. Crowley, S. S.Brown, F. Bernard, L. Zhou, T. Mentel, R. Wu, and J. F. Hamilton https://doi.org/10.25326/BSA7-WX31

Short summary

The investigation of the night-time oxidation of the most abundant hydrocarbon, isoprene, in chamber experiments shows the importance of reaction pathways leading to epoxy products, which could enhance particle formation, that have so far not been accounted for. The chemical lifetime of organic nitrates from isoprene is long enough for the majority to be further oxidized the next day by daytime oxidants.