Articles | Volume 14, issue 1
Atmos. Meas. Tech., 14, 133–152, 2021
https://doi.org/10.5194/amt-14-133-2021
Atmos. Meas. Tech., 14, 133–152, 2021
https://doi.org/10.5194/amt-14-133-2021

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 et al.

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Latest update: 11 Apr 2021
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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.