Articles | Volume 8, issue 12
Atmos. Meas. Tech., 8, 5289–5299, 2015
https://doi.org/10.5194/amt-8-5289-2015
Atmos. Meas. Tech., 8, 5289–5299, 2015
https://doi.org/10.5194/amt-8-5289-2015

Research article 18 Dec 2015

Research article | 18 Dec 2015

Gas adsorption and desorption effects on cylinders and their importance for long-term gas records

M. C. Leuenberger et al.

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Short summary
Adsorption/desorption effects of trace gases in gas cylinders were investigated. Our measurements indicate a rather strong effect on steel cylinders for CO2 that becomes easily visible through enhanced concentrations for low (<20 bars) gas pressure. Much smaller effects are observed for CO and CH4. Significantly smaller effects are measured for all gas species investigated on aluminium cylinders. Careful selection of gas cylinders for high-precision calibration purposes is recommended.