An in situ gas chromatograph with automatic detector switching between PTR- and EI-TOF-MS: isomer-resolved measurements of indoor air

Claflin, Megan S.; Pagonis, Demetrios; Finewax, Zachary; Handschy, Anne V.; Day, Douglas A.; Brown, Wyatt L.; Jayne, John T.; Worsnop, Douglas R.; Jimenez, Jose L.; Ziemann, Paul J.; de Gouw, Joost; Lerner, Brian M.

doi:https://doi.org/10.5194/amt-14-133-2021

Articles | Volume 14, issue 1

https://doi.org/10.5194/amt-14-133-2021

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

https://doi.org/10.5194/amt-14-133-2021

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

Articles | Volume 14, issue 1

Research article

|

07 Jan 2021

Research article |

| 07 Jan 2021

An in situ gas chromatograph with automatic detector switching between PTR- and EI-TOF-MS: isomer-resolved measurements of indoor air

Megan S. Claflin, Demetrios Pagonis, Zachary Finewax, Anne V. Handschy, Douglas A. Day, Wyatt L. Brown, John T. Jayne, Douglas R. Worsnop, Jose L. Jimenez, Paul J. Ziemann, Joost de Gouw, and Brian M. Lerner

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Final revised paper (published on 07 Jan 2021)
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Preprint (discussion started on 17 Jul 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: 'Referee comment', Anonymous Referee #1, 14 Aug 2020
- AC1: 'Response to Reviewer 1', Megan Claflin, 19 Nov 2020
RC2: 'Review', Anonymous Referee #2, 25 Oct 2020
- AC2: 'Response to Reviewer 2', Megan Claflin, 19 Nov 2020

Peer-review completion

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

AR by Megan Claflin on behalf of the Authors (19 Nov 2020) Author's response Manuscript

ED: Publish as is (20 Nov 2020) by Hendrik Fuchs

AR by Megan Claflin on behalf of the Authors (20 Nov 2020)

Short summary

We have developed a field-deployable gas chromatograph with thermal desorption preconcentration and detector switching between two high-resolution mass spectrometers for in situ measurements of volatile organic compounds (VOCs). This system combines chromatography with both proton transfer and electron ionization to offer fast time response and continuous molecular speciation. This technique was applied during the 2018 ATHLETIC campaign to characterize VOC emissions in an indoor environment.