Solvent effects on surface activity of aggregate ions in electrospray ionization

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dc.contributor.authorPape, Jennifer
dc.contributor.authorVikse, Krista L.
dc.contributor.authorJanusson, Eric
dc.contributor.authorTaylor, Nichole
dc.contributor.authorMcIndoe, J. Scott
dc.date.accessioned2018-10-16T23:23:43Z
dc.date.available2018-10-16T23:23:43Z
dc.date.copyright2014en_US
dc.date.issued2014-11
dc.description.abstractA principal feature of electrospray ionization (ESI) is the transfer of ions in solution into the gas-phase for analysis by mass spectrometry. The electrospray process is intricate and therefore each stage of the process must be well-characterized in order to optimize the quality of the data obtained. The surface activity of a given ion is a substantial factor in its likelihood of evaporating from droplets formed by the electrospray, and leads to a differential response of one ion over another. Consequently, investigation of the response of a variety of ions in multiple solvents lends insight toward both desolvation processes and the surface activity of the ions studied in the chosen solvent. In the present work, a cationic ionic liquid, butyl methylimidazolium (BMIM), was paired with a counterion and mixed in various solvents. Subsequently, BMIM paired with a different counterion was added to the solution and analyzed by ESI mass spectrometry to determine the relative response ratio between two observable aggregates. The findings assist in the elucidation of differential surface activity of chemically distinct ions in ESI, with respect to changes in solvent. Furthermore, the results obtained suggest acetonitrile is an optimal solvent for the analysis of ions of this type due to a reduction in differential effects, whereas other common ESI solvents prove to enhance the surface activity of specific aggregate ions.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipJSM thanks NSERC for operational funding (Discovery and Discovery Accelerator Supplements), and CFI, BCKDF and the University of Victoria for instrumental support.en_US
dc.identifier.citationPape, J., Viske, K.L., Janusson, E., Taylor, N. & McIndoe, J.S. (2017). Solvent effects on surface activity of aggregate ions in electrospray ionization. International Journal of Mass Spectrometry, 373, 66-71. https://doi.org/10.1016/j.ijms.2014.09.009en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijms.2014.09.009
dc.identifier.urihttp://hdl.handle.net/1828/10165
dc.language.isoenen_US
dc.publisherInternational Journal of Mass Spectrometryen_US
dc.subjectElectrospray ionization
dc.subjectSurface activity
dc.subjectIon evaporation
dc.subjectSolvent effects
dc.subject.departmentDepartment of Chemistry
dc.titleSolvent effects on surface activity of aggregate ions in electrospray ionizationen_US
dc.typePostprinten_US

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