Molecular composition and volatility of isoprene photochemical oxidation secondary organic aerosol under low- and high-NO<sub><i>x</i></sub> conditions

D'Ambro, Emma L.; Lee, Ben H.; Liu, Jiumeng; Shilling, John E.; Gaston, Cassandra J.; Lopez-Hilfiker, Felipe D.; Schobesberger, Siegfried; Zaveri, Rahul A.; Mohr, Claudia; Lutz, Anna; Zhang, Zhenfa; Gold, Avram; Surratt, Jason D.; Rivera-Rios, Jean C.; Keutsch, Frank N.; Thornton, Joel A.

doi:https://doi.org/10.5194/acp-17-159-2017

Articles | Volume 17, issue 1

https://doi.org/10.5194/acp-17-159-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-17-159-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 1

Research article

|

04 Jan 2017

Research article |

| 04 Jan 2017

Molecular composition and volatility of isoprene photochemical oxidation secondary organic aerosol under low- and high-NO_x conditions

Emma L. D'Ambro, Ben H. Lee, Jiumeng Liu, John E. Shilling, Cassandra J. Gaston, Felipe D. Lopez-Hilfiker, Siegfried Schobesberger, Rahul A. Zaveri, Claudia Mohr, Anna Lutz, Zhenfa Zhang, Avram Gold, Jason D. Surratt, Jean C. Rivera-Rios, Frank N. Keutsch, and Joel A. Thornton

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Final revised paper (published on 04 Jan 2017)
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Preprint (discussion started on 08 Aug 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Referee comment', Anonymous Referee #1, 14 Sep 2016
- AC1: 'Response to Referee #1', E.L. D'Ambro, 23 Nov 2016
RC2: 'SOA formation from isoprene oxidation', Anonymous Referee #2, 02 Oct 2016
- AC2: 'Response to Referee #2', E.L. D'Ambro, 23 Nov 2016

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Emma L. D'Ambro on behalf of the Authors (23 Nov 2016) Manuscript

ED: Publish as is (05 Dec 2016) by Kostas Tsigaridis

AR by Emma L. D'Ambro on behalf of the Authors (09 Dec 2016)

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Short summary

We studied the formation and properties of secondary organic aerosol produced from isoprene. We find that a significant fraction (~50 %) of the mass is composed of low-volatility, highly oxidized compounds such as C₅H₁₂O₆. A significant fraction of the remainder appears to be in the form of oligomeric material. Adding NO_x maintained or decreased SOA yields while increasing the fraction of low-volatility material, possibly due to oligomers.

Molecular composition and volatility of isoprene photochemical oxidation secondary organic aerosol under low- and high-NOx conditions

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Interactive discussion

Peer-review completion

Molecular composition and volatility of isoprene photochemical oxidation secondary organic aerosol under low- and high-NO_x conditions