Formation of hydroxyl radicals from photolysis of secondary organic aerosol material

Badali, K. M.; Zhou, S.; Aljawhary, D.; Antiñolo, M.; Chen, W. J.; Lok, A.; Mungall, E.; Wong, J. P. S.; Zhao, R.; Abbatt, J. P. D.

doi:https://doi.org/10.5194/acp-15-7831-2015

Articles | Volume 15, issue 14

https://doi.org/10.5194/acp-15-7831-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-15-7831-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 14

Research article

|

16 Jul 2015

Research article |

| 16 Jul 2015

Formation of hydroxyl radicals from photolysis of secondary organic aerosol material

K. M. Badali, S. Zhou, D. Aljawhary, M. Antiñolo, W. J. Chen, A. Lok, E. Mungall, J. P. S. Wong, R. Zhao, and J. P. D. Abbatt

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Final revised paper (published on 16 Jul 2015)
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Preprint (discussion started on 17 Feb 2015)
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Interactive discussion

Status: closed

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

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RC C855: 'Review', Anonymous Referee #1, 17 Mar 2015
- AC C3181: 'Response to Anonymous Referee #1', Kaitlin Badali, 03 Jun 2015
RC C1835: 'Review of Badall et al. manuscript', Anonymous Referee #2, 23 Apr 2015
- AC C3185: 'Response to Anonymous Referee #2', Kaitlin Badali, 03 Jun 2015

Peer-review completion

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

AR by Kaitlin Badali on behalf of the Authors (03 Jun 2015) Author's response Manuscript

ED: Publish as is (03 Jun 2015) by V. Faye McNeill

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Short summary

This is the first paper to demonstrate that SOA material forms OH radicals upon UV illumination. We quantify the OH formation rates in solution and show species other than H2O2, mostly probably ROOH molecules, are the likely source of the OH. The importance of an OH source from SOA is that photochemical processing within both cloudwater and aerosol particles may arise subsequent to the formation of these radicals.