Quantification of peroxynitric acid and peroxyacyl nitrates using an ethane-based thermal dissociation peroxy radical chemical amplification cavity ring-down spectrometer

Taha, Youssef M.; Saowapon, Matthew T.; Assad, Faisal V.; Ye, Connie Z.; Chen, Xining; Garner, Natasha M.; Osthoff, Hans D.

doi:https://doi.org/10.5194/amt-11-4109-2018

Articles | Volume 11, issue 7

https://doi.org/10.5194/amt-11-4109-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-11-4109-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 7

Research article

|

17 Jul 2018

Research article |

| 17 Jul 2018

Quantification of peroxynitric acid and peroxyacyl nitrates using an ethane-based thermal dissociation peroxy radical chemical amplification cavity ring-down spectrometer

Youssef M. Taha, Matthew T. Saowapon, Faisal V. Assad, Connie Z. Ye, Xining Chen, Natasha M. Garner, and Hans D. Osthoff

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Final revised paper (published on 17 Jul 2018)
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Preprint (discussion started on 16 Apr 2018)
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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

RC1: 'Comment on “Quantification of peroxynitric acid and peroxyacyl nitrates using an ethane-based thermal dissociation peroxy radical chemical amplification cavity ring-down spectrometer” by Youssef M. Taha et al', Anonymous Referee #1, 21 May 2018
- AC1: 'Response to reviewer 1', Hans Osthoff, 27 Jun 2018
RC2: 'Review of Taha et al', Anonymous Referee #2, 05 Jun 2018
- AC2: 'Response to reviewer 2', Hans Osthoff, 27 Jun 2018

Peer-review completion

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

AR by Hans Osthoff on behalf of the Authors (27 Jun 2018) Author's response Manuscript

ED: Publish as is (29 Jun 2018) by Mingjin Tang

AR by Hans Osthoff on behalf of the Authors (01 Jul 2018) Manuscript

Short summary

Nitrogen oxides are commonly measured by selective thermal dissociation (TD) to NO₂, which can be quantified by optical absorption. Quantification of peroxynitrates (RO₂NO₂) by TD methods, however, is challenging in ambient air since NO₂ is usually more abundant than RO₂NO₂. Here, a method to boost the sensitivity of TD instruments by chemical amplification following addition of ~ 1 % ethane and ~ 1 ppm NO to the inlet is presented. Advantages and disadvantages of the new method are discussed.