In-beam ionization by alkali ion attachment applying a two-filament ion source
A simple ion source was constructed for in‐beam ionization by alkali ion attachment. A wire probe covered with sample was placed near an alkali ion emitter prepared from a mixture of silica gel and alkali halides. The ionization of various thermally labile compounds and of mixtures was investigated....
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Veröffentlicht in: | Organic Mass Spectrometry 1985-04, Vol.20 (4), p.305-309 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A simple ion source was constructed for in‐beam ionization by alkali ion attachment. A wire probe covered with sample was placed near an alkali ion emitter prepared from a mixture of silica gel and alkali halides. The ionization of various thermally labile compounds and of mixtures was investigated. Na+ proved to be the most suitable alkali ion for cationization. For monosaccharides experiments revealed the elimination of water upon ionization by Li+ attachment. The experimental set‐up was also examined for measuring the heat of sublimation of organic solids. |
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ISSN: | 0030-493X 1096-9888 2376-3884 |
DOI: | 10.1002/oms.1210200408 |