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High-mass cluster ions of ionic liquids in positive-ion and negative-ion DART-MS and their application for wide-range mass calibrations

Eight ionic liquids (ILs) are subjected to both positive-ion and negative-ion direct analyses in real time (DART) Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry (MS). First, their ability to deliver evenly distributed cluster ion series covering a wide m/z range is explored. Th...

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1. Verfasser: Gross, Jürgen H. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 15 March 2014
In: Analytical and bioanalytical chemistry
Year: 2014, Jahrgang: 406, Heft: 12, Pages: 2853-2862
ISSN:1618-2650
DOI:10.1007/s00216-014-7720-0
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/s00216-014-7720-0
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Verfasserangaben:Jürgen H. Gross
Beschreibung
Zusammenfassung:Eight ionic liquids (ILs) are subjected to both positive-ion and negative-ion direct analyses in real time (DART) Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry (MS). First, their ability to deliver evenly distributed cluster ion series covering a wide m/z range is explored. Then, one of the ILs exhibiting particularly useful cluster ion series in either ion polarity is applied for mass calibration. Using 1-butyl-3-methylimidazolium tricyanomethide delivers positive cluster ions suitable for mass calibration in the m/z 100-4,000 range and covers the m/z 100-2,000 range in negative-ion DART-MS. The corresponding mass reference lists are provided for either polarity. Furthermore, based on 1-butyl-3-methylimidazolium tricyanomethide, a high-mass record of m/z > 5,000 for positive-ion DART-MS is presented. The mass calibration procedure is finally validated by application to established standard compounds such as polydimethylsiloxanes, perfluorononanoic acid, and Ultramark 1621, a mixture of hexakis (fluoroalkoxy) phosphazenes. Further proof is presented by consistent exact mass differences between adjacent cluster ions.
Beschreibung:Gesehen am 07.09.2020
Beschreibung:Online Resource
ISSN:1618-2650
DOI:10.1007/s00216-014-7720-0

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