Articles | Volume 12, issue 6
Atmos. Meas. Tech., 12, 3137–3149, 2019
https://doi.org/10.5194/amt-12-3137-2019
Atmos. Meas. Tech., 12, 3137–3149, 2019
https://doi.org/10.5194/amt-12-3137-2019

Research article 13 Jun 2019

Research article | 13 Jun 2019

Effects of gas–wall interactions on measurements of semivolatile compounds and small polar molecules

Xiaoxi Liu et al.

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Latest update: 20 Sep 2021
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Short summary
Delays or losses of gases in sampling tubing and instrumental surfaces due to surface interactions can lead to inaccurate quantification. By sampling with several chemical ionization mass spectrometers and six tubing materials, we quantify delays of semivolatile organic compounds and small polar gases. Delay times generally increase with decreasing volatility or increasing polarity and also depend on materials. The method and results will inform inlet material selection and instrumental design.