Articles | Volume 14, issue 1
https://doi.org/10.5194/amt-14-133-2021
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, 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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Cited articles

Abbatt, J. P. D. and Wang, C.: The atmospheric chemistry of indoor environments, Environ. Sci. Process. Impacts, 22, 25–48, https://doi.org/10.1039/c9em00386j, 2020. 
Algrim, L. B., Pagonis, D., de Gouw, J. A., Jimenez, J. L., and Ziemann, P. J.: Measurements and modeling of absorptive partitioning of volatile organic compounds to painted surfaces, Indoor Air, 30, 745–756, https://doi.org/10.1111/ina.12654, 2020. 
Anderson, D. C., Pavelec, J., Daube, C., Herndon, S. C., Knighton, W. B., Lerner, B. M., Roscioli, J. R., Yacovitch, T. I., and Wood, E. C.: Characterization of ozone production in San Antonio, Texas, using measurements of total peroxy radicals, Atmos. Chem. Phys., 19, 2845–2860, https://doi.org/10.5194/acp-19-2845-2019, 2019. 
Andriot, M., Chao, S., Colas, A., Cray, S., DeBuyl, F., DeGroot, J., Dupont, A., Easton, T., Garaud, J., and Gerlach, E.: Silicones in industrial applications, Inorganic polymers, edited by: De Jaeger, R. and Gleria, M., Nova Sciences, Hauppauge, New York, USA, 61–161, 2007. 
Atkinson, R. and Arey, J.: Atmospheric degradation of volatile organic compounds, Chem. Rev., 103, 4605–4638, https://doi.org/10.1021/cr0206420, 2003. 
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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.