Aqueous-phase reactive species formed by fine particulate matter from remote forests and polluted urban air

Tong, Haijie; Liu, Fobang; Filippi, Alexander; Wilson, Jake; Arangio, Andrea M.; Zhang, Yun; Yue, Siyao; Lelieveld, Steven; Shen, Fangxia; Keskinen, Helmi-Marja K.; Li, Jing; Chen, Haoxuan; Zhang, Ting; Hoffmann, Thorsten; Fu, Pingqing; Brune, William H.; Petäjä, Tuukka; Kulmala, Markku; Yao, Maosheng; Berkemeier, Thomas; Shiraiwa, Manabu; Pöschl, Ulrich

doi:https://doi.org/10.5194/acp-21-10439-2021

Articles | Volume 21, issue 13

https://doi.org/10.5194/acp-21-10439-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-10439-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 13

Research article

|

09 Jul 2021

Research article |

| 09 Jul 2021

Aqueous-phase reactive species formed by fine particulate matter from remote forests and polluted urban air

Haijie Tong, Fobang Liu, Alexander Filippi, Jake Wilson, Andrea M. Arangio, Yun Zhang, Siyao Yue, Steven Lelieveld, Fangxia Shen, Helmi-Marja K. Keskinen, Jing Li, Haoxuan Chen, Ting Zhang, Thorsten Hoffmann, Pingqing Fu, William H. Brune, Tuukka Petäjä, Markku Kulmala, Maosheng Yao, Thomas Berkemeier, Manabu Shiraiwa, and Ulrich Pöschl

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Final revised paper (published on 09 Jul 2021)
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Preprint (discussion started on 20 Oct 2020)
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Interactive discussion

Status: closed

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

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RC1: 'Comments', Anonymous Referee #1, 10 Nov 2020
- AC1: 'Response to Referee 1', Haijie Tong, 04 Jun 2021
RC2: 'Review attached', Anonymous Referee #2, 18 Nov 2020
- AC2: 'Response to Referee 2', Haijie Tong, 04 Jun 2021

Peer-review completion

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

AR by Haijie Tong on behalf of the Authors (04 Jun 2021) Author's response Author's tracked changes Manuscript

ED: Publish subject to technical corrections (14 Jun 2021) by Dwayne Heard

AR by Haijie Tong on behalf of the Authors (14 Jun 2021) Manuscript

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Short summary

We measured radical yields of aqueous PM_2.5 extracts and found lower yields at higher concentrations of PM_2.5. Abundances of water-soluble transition metals and aromatics in PM_2.5 were positively correlated with the relative fraction of •OH but negatively correlated with the relative fraction of C-centered radicals among detected radicals. Composition-dependent reactive species yields may explain differences in the reactivity and health effects of PM_2.5 in clean versus polluted air.