Hydroxyl radicals from secondary organic aerosol decomposition in water

Tong, Haijie; Arangio, Andrea M.; Lakey, Pascale S. J.; Berkemeier, Thomas; Liu, Fobang; Kampf, Christopher J.; Brune, William H.; Pöschl, Ulrich; Shiraiwa, Manabu

doi:https://doi.org/10.5194/acp-16-1761-2016

Articles | Volume 16, issue 3

https://doi.org/10.5194/acp-16-1761-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-16-1761-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 3

Research article

|

15 Feb 2016

Research article |

| 15 Feb 2016

Hydroxyl radicals from secondary organic aerosol decomposition in water

Haijie Tong, Andrea M. Arangio, Pascale S. J. Lakey, Thomas Berkemeier, Fobang Liu, Christopher J. Kampf, William H. Brune, Ulrich Pöschl, and Manabu Shiraiwa

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Final revised paper (published on 15 Feb 2016)
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Preprint (discussion started on 03 Nov 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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- Supplement

SC C9242: 'Comment on “Hydroxyl radicals from secondary organic aerosol decomposition in water”', Yongchun Liu, 13 Nov 2015
- AC C12087: 'Response to the short comment', Manabu Shiraiwa, 29 Jan 2016
RC C10745: 'Review', Anonymous Referee #1, 22 Dec 2015
- AC C12086: 'Response to Referee 1', Manabu Shiraiwa, 29 Jan 2016
RC C11048: 'OH production in the dark by secondary organic aerosol in the presence of liquid water', Anonymous Referee #2, 04 Jan 2016
- AC C12085: 'Response to Referee 2', Manabu Shiraiwa, 29 Jan 2016

Peer-review completion

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

AR by Manabu Shiraiwa on behalf of the Authors (29 Jan 2016) Author's response Manuscript

ED: Publish as is (02 Feb 2016) by Frank Keutsch

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Short summary

We provide experimental evidence that terpene and isoprene SOA form substantial amounts of OH radicals upon interaction with liquid water and iron. Our measurements and model results imply that the chemical reactivity of SOA in the atmosphere, particularly in clouds, can be faster than previously thought. Inhalation and deposition of SOA particles in the human respiratory tract may lead to a substantial release of OH radicals in vivo, causing oxidative stress and adverse aerosol health effects.