6533b81ffe1ef96bd127864b
RESEARCH PRODUCT
A study on the fragmentation of sulfuric acid and dimethylamine clusters inside an Atmospheric Pressure interface Time Of Flight Mass Spectrometer
Juha KangasluomaLauri AhonenHanna VehkamäkiJakub KubečkaNanna MyllysDina AlfaouriTommaso ZancaMonica PassanantiMonica Passanantisubject
Time of flightchemistry.chemical_compoundMaterials scienceFragmentation (mass spectrometry)chemistryAtmospheric pressureMass spectrumAnalytical chemistryParticleSulfuric acidMass spectrometryDimethylaminedescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-07-14 |