High-mass capabilities of positive-ion and negative-ion direct analysis in real time mass spectrometry: letter
Of the ionic liquid 1-butyl-3-methylimidazolium (C+) tricyanomethide (A−) high-mass cluster ions of both positive ([CnAn-1]+) and negative ([Cn-1An]−) charge were generated and detected by direct analysis in real time (DART) Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry (MS)....
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| Main Author: | |
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| Format: | Article (Journal) Editorial |
| Language: | English |
| Published: |
28 January 2016
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| In: |
European journal of mass spectrometry
Year: 2016, Volume: 22, Issue: 1, Pages: 43-48 |
| ISSN: | 1751-6838 |
| DOI: | 10.1255/ejms.1409 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1255/ejms.1409
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| Author Notes: | Jürgen H. Gross |
| Summary: | Of the ionic liquid 1-butyl-3-methylimidazolium (C+) tricyanomethide (A−) high-mass cluster ions of both positive ([CnAn-1]+) and negative ([Cn-1An]−) charge were generated and detected by direct analysis in real time (DART) Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry (MS). After optimization of the settings of the DART ionization source and of the mass analyser, ions of m/z values unprecedented in DART-MS were detected. Thus, the upper m/z limits of positive-ion and negative-ion DART-MS were substantially expanded. Negative-ion DART-MS delivered cluster ions up to [C15A16]−, m/z 3527 (nominal mass of monoisotopic ion), while positive-ion DART-MS even yielded ions up to [C30A29]+, m/z 6784. The identification of the cluster ions is supported by their accurate mass and exact mass differences corresponding to CA between adjacent cluster ion peaks. |
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| Item Description: | Gesehen am 10.08.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1751-6838 |
| DOI: | 10.1255/ejms.1409 |