Articles | Volume 18, issue 4
https://doi.org/10.5194/amt-18-971-2025
https://doi.org/10.5194/amt-18-971-2025
Research article
 | 
26 Feb 2025
Research article |  | 26 Feb 2025

Development of accurate and stable primary standard gas mixtures for global atmospheric acetonitrile monitoring: evaluating adsorption loss and long-term stability

Baigali Tsogt, Ji Hwan Kang, Seok-Young Oh, and Sangil Lee

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Short summary
We tested different cylinders and methods to create standard gas mixtures of acetonitrile, a chemical important for understanding air quality and climate change. We found making accurate mixtures at very low levels challenging due to the gas sticking to cylinder walls. However, we successfully created stable mixtures at higher levels. These can be used as reliable standards for global air monitoring. More research is needed to develop methods for making accurate mixtures at lower levels.
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