Formation of secondary organic aerosol coating on black carbon particles near vehicular emissions

Lee, Alex K. Y.; Chen, Chia-Li; Liu, Jun; Price, Derek J.; Betha, Raghu; Russell, Lynn M.; Zhang, Xiaolu; Cappa, Christopher D.

doi:https://doi.org/10.5194/acp-17-15055-2017

Articles | Volume 17, issue 24

https://doi.org/10.5194/acp-17-15055-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-17-15055-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 24

Research article

|

20 Dec 2017

Research article |

| 20 Dec 2017

Formation of secondary organic aerosol coating on black carbon particles near vehicular emissions

Alex K. Y. Lee, Chia-Li Chen, Jun Liu, Derek J. Price, Raghu Betha, Lynn M. Russell, Xiaolu Zhang, and Christopher D. Cappa

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Final revised paper (published on 20 Dec 2017)
Supplement to the final revised paper
Preprint (discussion started on 31 Jul 2017)
Supplement to the preprint

Interactive discussion

Status: closed

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

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RC1: 'Review', Anonymous Referee #1, 28 Aug 2017
- AC1: 'Response to reviewer 1', Alex Lee, 04 Nov 2017
RC2: 'Review', Anonymous Referee #2, 01 Sep 2017
- AC2: 'Response to reviewer 2', Alex Lee, 04 Nov 2017

Peer-review completion

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

AR by Alex Lee on behalf of the Authors (04 Nov 2017) Author's response Manuscript

ED: Publish as is (16 Nov 2017) by Jacqui Hamilton

AR by Alex Lee on behalf of the Authors (17 Nov 2017) Manuscript

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Short summary

Understanding the mixing state of ambient black carbon (BC) and the chemical characteristics of its associated coatings is important to evaluate BC fate and environmental impacts. This study reports fresh secondary organic aerosol (SOA) formation near traffic emissions during daytime. Our observations suggest that BC was unlikely the major condensation sink of SOA, and a portion of SOA condensed on BC surface was chemically different from other SOA particles that were externally mixed with BC.