Articles | Volume 13, issue 5
Atmos. Meas. Tech., 13, 2501–2522, 2020
https://doi.org/10.5194/amt-13-2501-2020

Special issue: The CERN CLOUD experiment (ACP/AMT inter-journal SI)

Atmos. Meas. Tech., 13, 2501–2522, 2020
https://doi.org/10.5194/amt-13-2501-2020

Research article 19 May 2020

Research article | 19 May 2020

Measurement of ammonia, amines and iodine compounds using protonated water cluster chemical ionization mass spectrometry

Joschka Pfeifer et al.

Data sets

Measurement of ammonia, amines and iodine compounds using protonated water cluster chemical ionization mass spectrometry (Version Published data) J. Pfeifer, M. Simon, A. Kürten, J. Kirkby, J. Curtius, M. Heinritzi, and S. Bräkling https://doi.org/10.5281/zenodo.3831469

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Short summary
Ammonia is an important atmospheric trace gas that affects secondary aerosol formation and, together with sulfuric acid, the formation of new particles. A measurement technique is presented that uses high-resolution mass spectrometry and protonated water clusters for the ultrasensitive detection of ammonia at single-digit parts per trillion by volume levels. The instrument is further capable of measuring amines and a suite of iodine compounds at sub-parts per trillion by volume levels.