A1 Journal article (refereed)
A study on the fragmentation of sulfuric acid and dimethylamine clusters inside an atmospheric pressure interface time-of-flight mass spectrometer (2022)

Alfaouri, D., Passananti, M., Zanca, T., Ahonen, L., Kangasluoma, J., Kubečka, J., Myllys, N., & Vehkamäki, H. (2022). A study on the fragmentation of sulfuric acid and dimethylamine clusters inside an atmospheric pressure interface time-of-flight mass spectrometer. Atmospheric measurement techniques, 15(1), 11-19. https://doi.org/10.5194/amt-15-11-2022

JYU authors or editors

Publication details

All authors or editors: Alfaouri, Dina; Passananti, Monica; Zanca, Tommaso; Ahonen, Lauri; Kangasluoma, Juha; Kubečka, Jakub; Myllys, Nanna; Vehkamäki, Hanna

Journal or series: Atmospheric measurement techniques

ISSN: 1867-1381

eISSN: 1867-8548

Publication year: 2022

Publication date: 03/01/2022

Volume: 15

Issue number: 1

Pages range: 11-19

Publisher: Copernicus GmbH

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.5194/amt-15-11-2022

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/79390

Abstract

Sulfuric acid and dimethylamine vapours in the atmosphere can form molecular clusters, which participate in new particle formation events. In this work, we have produced, measured, and identified clusters of sulfuric acid and dimethylamine using an electrospray ionizer coupled with a planar-differential mobility analyser, connected to an atmospheric pressure interface time-of-flight mass spectrometer (ESI–DMA–APi-TOF MS). This set-up is suitable for evaluating the extent of fragmentation of the charged clusters inside the instrument. We evaluated the fragmentation of 11 negatively charged clusters both experimentally and using a statistical model based on quantum chemical data. The results allowed us to quantify the fragmentation of the studied clusters and to reconstruct the mass spectrum by removing the artifacts due to the fragmentation.

Keywords: atmospheric chemistry; fine particles; sulphuric acid; amines; clusters; decomposition (chemistry); atmospheric pressure

Free keywords: fragmentation; sulfuric acid; dimethylamine clusters; atmospheric pressure

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2022

Preliminary JUFO rating: 1