Articles | Volume 16, issue 5
https://doi.org/10.5194/amt-16-1179-2023
https://doi.org/10.5194/amt-16-1179-2023
Research article
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07 Mar 2023
Research article | Highlight paper |  | 07 Mar 2023

Influence of ozone and humidity on PTR-MS and GC-MS VOC measurements with and without a Na2S2O3 ozone scrubber

Lisa Ernle, Monika Akima Ringsdorf, and Jonathan Williams

Data sets

VOCdata_O3_Na2S2O3scrubber (1.1) Lisa Ernle and Monika Akima Ringsdorf https://doi.org/10.5281/zenodo.7576413

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Executive editor
I agree with the handling editor that this paper covers a very good study that would be a very useful for the community, especially for measurements of reactive gases.
Short summary
Atmospheric ozone can induce artefacts in volatile organic compound measurements. Laboratory tests were made using GC-MS and PTR-MS aircraft systems under tropospheric and stratospheric conditions of humidity and ozone, with and without sodium thiosulfate filter scrubbers. Ozone in dry air produces some carbonyls and degrades alkenes. The scrubber lifetime depends on ozone concentration, flow rate and humidity. For the troposphere with scrubber, no significant artefacts were found over 14 d.