Effect of oxidant concentration, exposure time, and seed particles on secondary organic aerosol chemical composition and yield

Lambe, A. T.; Chhabra, P. S.; Onasch, T. B.; Brune, W. H.; Hunter, J. F.; Kroll, J. H.; Cummings, M. J.; Brogan, J. F.; Parmar, Y.; Worsnop, D. R.; Kolb, C. E.; Davidovits, P.

doi:https://doi.org/10.5194/acp-15-3063-2015

Articles | Volume 15, issue 6

https://doi.org/10.5194/acp-15-3063-2015

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

https://doi.org/10.5194/acp-15-3063-2015

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

Articles | Volume 15, issue 6

Research article

|

18 Mar 2015

Research article |

| 18 Mar 2015

Effect of oxidant concentration, exposure time, and seed particles on secondary organic aerosol chemical composition and yield

A. T. Lambe, P. S. Chhabra, T. B. Onasch, W. H. Brune, J. F. Hunter, J. H. Kroll, M. J. Cummings, J. F. Brogan, Y. Parmar, D. R. Worsnop, C. E. Kolb, and P. Davidovits

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Final revised paper (published on 18 Mar 2015)
Preprint (discussion started on 02 Dec 2014)

Interactive discussion

Status: closed

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

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RC C10585: 'review', Anonymous Referee #2, 30 Dec 2014
RC C10592: 'Referee Comment on the manuscript by Lambe et al', Anonymous Referee #3, 30 Dec 2014
SC C11295: 'Comment on Lambe et al.', Douglas Day, 17 Jan 2015
AC C12169: 'final response', Andrew Lambe, 12 Feb 2015

Peer-review completion

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

AR by Andrew Lambe on behalf of the Authors (13 Feb 2015)

ED: Publish as is (27 Feb 2015) by Hinrich Grothe

AR by Andrew Lambe on behalf of the Authors (27 Feb 2015)

Short summary

We compared the chemistry and yields of SOA generated from OH oxidation of gas-phase precursors in a flow reactor (high OH, short residence time) and environmental chambers (low OH, long residence time). We find that chemical composition of SOA produced in the flow reactor and in chambers is similar. SOA yields measured in the flow reactor are lower than in chambers. Seed particles increase the yield of SOA produced in the flow reactor and may account in part for higher SOA yields in chambers.