Articles | Volume 13, issue 7
Atmos. Meas. Tech., 13, 3507–3520, 2020
https://doi.org/10.5194/amt-13-3507-2020
Atmos. Meas. Tech., 13, 3507–3520, 2020
https://doi.org/10.5194/amt-13-3507-2020

Research article 02 Jul 2020

Research article | 02 Jul 2020

SIFT-MS optimization for atmospheric trace gas measurements at varying humidity

Ann-Sophie Lehnert et al.

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Cited articles

Amelynck, C., Schoon, N., and Dhooghe, F.: SIFT Ion Chemistry Studies Underpinning the Measurement of Volatile Organic Compound Emissions by Vegetation, Curr. Anal. Chem., 9, 540–549, https://doi.org/10.2174/15734110113099990018, 2013. 
Ammann, C., Spirig, C., Neftel, A., Steinbacher, M., Komenda, M., and Schaub, A.: Application of PTR-MS for measurements of biogenic VOC in a deciduous forest, Int. J. Mass Spectrom., 239, 87–101, https://doi.org/10.1016/j.ijms.2004.08.012, 2004. 
Biasioli, F., Yeretzian, C., Märk, T. D., Dewulf, J., and Van Langenhove, H.: Direct-injection mass spectrometry adds the time dimension to (B)VOC analysis, TRAC-Trend. Anal. Chem., 30, 1003–1017, https://doi.org/10.1016/j.trac.2011.04.005, 2011. 
Blake, R. S., Monks, P. S., and Ellis, A. M.: Proton-Transfer Reaction Mass Spectrometry, Chem. Rev., 109, 861–896, https://doi.org/10.1021/cr800364q, 2009. 
Breitenlechner, M., Fischer, L., Hainer, M., Heinritzi, M., Curtius, J., and Hansel, A.: PTR3: An Instrument for Studying the Lifecycle of Reactive Organic Carbon in the Atmosphere, Anal. Chem., 89, 5824–5831, 2017. 
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Short summary
Volatile organic compounds (VOCs) like scents can appear and disappear quickly. For example, when a bug starts on a tree, the tree releases VOCs that warn the trees around him. Thus, one needs instruments measuring their concentration in real time and identify which VOC is measured. In our study, we compared two instruments doing that, PTR-MS and SIFT-MS. Both work similarly, but we found that the PTR-MS can measure lower concentrations, but the SIFT-MS can identify VOCs better.