Articles | Volume 13, issue 5
https://doi.org/10.5194/amt-13-2501-2020
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, Mario Simon, Martin Heinritzi, Felix Piel, Lena Weitz, Dongyu Wang, Manuel Granzin, Tatjana Müller, Steffen Bräkling, Jasper Kirkby, Joachim Curtius, and Andreas Kürten

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Latest update: 14 Dec 2024
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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.