Highly oxygenated organic molecule cluster decomposition in atmospheric pressure interface time-of-flight mass spectrometers

Tommaso Zanca, Jakub Kubecka, Evgeni Zapadinsky, Monica Passananti, Theo Kurten, Hanna Vehkamäki

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review


Identification of atmospheric molecular clusters and measurement of their concentrations by atmospheric pressure interface time-of-flight (APi-TOF) mass spectrometers may be affected by systematic error due to possible decomposition of clusters inside the instrument. Here, we perform numerical simulations of decomposition in an APi-TOF mass spectrometers and formation in the atmosphere of a set of clusters which involve a representative kind of highly oxygenated organic molecule (HOM), with the molecular formula C10H16O8. This elemental composition corresponds to one of the most common mass peaks observed in experiments on ozone-initiated autoxidation of alpha-pinene. Our results show that decomposition is highly unlikely for the considered clusters, provided their bonding energy is large enough to allow formation in the atmosphere in the first place.

TidskriftAtmospheric Measurement Techniques
Sidor (från-till)3581-3593
Antal sidor13
StatusPublicerad - 3 juli 2020
MoE-publikationstypA1 Tidskriftsartikel-refererad


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