Quantification of environmentally persistent free radicals and reactive
oxygen species in atmospheric aerosol particles

Arangio, Andrea M.; Tong, Haijie; Socorro, Joanna; Pöschl, Ulrich; Shiraiwa, Manabu

doi:https://doi.org/10.5194/acp-16-13105-2016

Articles | Volume 16, issue 20

https://doi.org/10.5194/acp-16-13105-2016

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

https://doi.org/10.5194/acp-16-13105-2016

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

Articles | Volume 16, issue 20

Research article

|

26 Oct 2016

Research article |

| 26 Oct 2016

Quantification of environmentally persistent free radicals and reactive oxygen species in atmospheric aerosol particles

Andrea M. Arangio, Haijie Tong, Joanna Socorro, Ulrich Pöschl, and Manabu Shiraiwa

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Final revised paper (published on 26 Oct 2016)
Preprint (discussion started on 20 Jun 2016)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review of Arangio et al.', Anonymous Referee #1, 08 Sep 2016
- AC1: 'Response to Referee 1', Manabu Shiraiwa, 04 Oct 2016
RC2: 'Interactive Comment Arangio et al.', Anonymous Referee #2, 09 Sep 2016
- AC2: 'Response to Referee 2', Manabu Shiraiwa, 04 Oct 2016
RC3: 'Review of "Quantification of environmentally persistent free radicals and reactive oxygen species in atmospheric aerosol particles"', Anonymous Referee #3, 11 Sep 2016
- AC3: 'Response to Referee 3', Manabu Shiraiwa, 04 Oct 2016
RC4: 'Review', Anonymous Referee #4, 11 Sep 2016
- AC4: 'Response to Referee 4', Manabu Shiraiwa, 04 Oct 2016

Peer-review completion

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

AR by Manabu Shiraiwa on behalf of the Authors (04 Oct 2016) Author's response Manuscript

ED: Publish as is (12 Oct 2016) by Astrid Kiendler-Scharr (deceased)

AR by Manabu Shiraiwa on behalf of the Authors (12 Oct 2016)

Short summary

We have quantified environmentally persistent free radicals and reactive oxygen species (ROS) in size-segregated atmospheric aerosol particles. We suggest that ROS were formed by decomposition of secondary organic aerosols interacting with transition metal ions and quinones contained in humic-like substances. The results have significant implications for aqueous-phase and cloud processing of organic aerosols as well as adverse health effects upon respiratory deposition of aerosol particles.