The impact of bath gas composition on the calibration of photoacoustic spectrometers with ozone at discrete visible wavelengths spanning the Chappuis band

Cotterell, Michael I.; Orr-Ewing, Andrew J.; Szpek, Kate; Haywood, Jim M.; Langridge, Justin M.

doi:https://doi.org/10.5194/amt-12-2371-2019

Articles | Volume 12, issue 4

https://doi.org/10.5194/amt-12-2371-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-12-2371-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 4

Research article

|

15 Apr 2019

Research article |

| 15 Apr 2019

The impact of bath gas composition on the calibration of photoacoustic spectrometers with ozone at discrete visible wavelengths spanning the Chappuis band

Michael I. Cotterell, Andrew J. Orr-Ewing, Kate Szpek, Jim M. Haywood, and Justin M. Langridge

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Final revised paper (published on 15 Apr 2019)
Preprint (discussion started on 06 Dec 2018)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Comment', Anonymous Referee #1, 28 Jan 2019
- AC1: 'Response to Referee 1', Michael Cotterell, 26 Mar 2019
RC2: 'Review', Anonymous Referee #2, 02 Mar 2019
- AC2: 'Response to Referee 2', Michael Cotterell, 26 Mar 2019
RC3: 'Impact of bath gas composition on the calibration of photo acoustic spectrometers with ozone', Anonymous Referee #3, 18 Mar 2019
- AC3: 'Response to Referee 3', Michael Cotterell, 26 Mar 2019

Peer-review completion

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

AR by Michael Cotterell on behalf of the Authors (26 Mar 2019) Author's response Manuscript

ED: Publish as is (28 Mar 2019) by Mingjin Tang

AR by Michael Cotterell on behalf of the Authors (28 Mar 2019)

Short summary

Photoacoustic spectroscopy provides measurements of absorption coefficient for aerosol and gas samples but requires careful calibration, and researchers often use concentrations of ozone. Recent work has shown that the bath gas composition impacts the accuracy of this calibration at visible wavelengths. We explore further the role of bath gas, demonstrating that the calibration accuracy is optimal for a bath gas composed of 20 % oxygen and 80 % nitrogen at wavelengths of 405, 514 and 658 nm.