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In‐beam ionization by alkali ion attachment applying a two‐filament ion source
Author(s) -
SchmelzeisenRedeker G.,
Giessmann U.,
Röllgen F. W.
Publication year - 1985
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210200408
Subject(s) - alkali metal , sublimation (psychology) , ionization , ion , ion source , thermal ionization , chemistry , halide , ion beam , inorganic chemistry , analytical chemistry (journal) , electron ionization , chromatography , organic chemistry , psychology , psychotherapist
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.