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

Ernle, Lisa; Ringsdorf, Monika Akima; Williams, Jonathan

doi:https://doi.org/10.5194/amt-16-1179-2023

Articles | Volume 16, issue 5

https://doi.org/10.5194/amt-16-1179-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-16-1179-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 5

Research article

| Highlight paper

|

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

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.