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
Hauptverfasser: Schmelzeisen-Redeker, G., Giessmann, U., Röllgen, F. W.
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.
ISSN:0030-493X
1096-9888
2376-3884
DOI:10.1002/oms.1210200408