Preprints
https://doi.org/10.5194/amt-2021-184
https://doi.org/10.5194/amt-2021-184

  14 Jul 2021

14 Jul 2021

Review status: a revised version of this preprint is currently under review for the journal AMT.

A study on the fragmentation of sulfuric acid and dimethylamine clusters inside an Atmospheric Pressure interface Time Of Flight Mass Spectrometer

Dina Alfaouri1, Monica Passananti1,2, Tommaso Zanca1, Lauri Ahonen1, Juha Kangasluoma1, Jakub Kubečka1, Nanna Myllys3, and Hanna Vehkamäki1 Dina Alfaouri et al.
  • 1Institute for Atmospheric and Earth System Research / Department of Physics, University of Helsinki, 00100 Finland
  • 2Dipartimento di Chimica, Università di Torino, Torino, 10125, Italy
  • 3Department of Chemistry, University of Jyväskylä, Jyväskylä, 40014, Finland

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 removing the artifacts due to the fragmentation.

Dina Alfaouri et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Interactive comment on "A study on the fragmentation of sulfuric acid and dimethylamine clusters inside an Atmospheric Pressure interface Time Of Flight Mass Spectrometer"', Anonymous Referee #1, 30 Jul 2021
    • AC1: 'Reply on RC1', Dina Alfaouri, 16 Sep 2021
  • RC2: 'Comment on amt-2021-184', Anonymous Referee #2, 31 Aug 2021
    • AC2: 'Reply on RC2', Dina Alfaouri, 16 Sep 2021
  • RC3: 'Comment on amt-2021-184', Anonymous Referee #3, 31 Aug 2021
    • AC3: 'Reply on RC3', Dina Alfaouri, 16 Sep 2021

Dina Alfaouri et al.

Dina Alfaouri et al.

Viewed

Total article views: 438 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
324 97 17 438 46 4 4
  • HTML: 324
  • PDF: 97
  • XML: 17
  • Total: 438
  • Supplement: 46
  • BibTeX: 4
  • EndNote: 4
Views and downloads (calculated since 14 Jul 2021)
Cumulative views and downloads (calculated since 14 Jul 2021)

Viewed (geographical distribution)

Total article views: 422 (including HTML, PDF, and XML) Thereof 422 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 21 Oct 2021
Download
Short summary
To study what is happening in the atmosphere, it is important to be able to measure the molecules and clusters present in it. In our work, we studied an artifact that happens inside a mass spectrometer, in particular, the fragmentation of clusters. We were able to quantify the fragmentation and retrieve the correct concentration and composition of the clusters using our dual (experimental and theoretical) approach.