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Direct chemical ionization mass spectrometry of short‐chain polysaccharides
Author(s) -
Metzger J. O.,
BrunsWeller E.
Publication year - 1992
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290060214
Subject(s) - chemistry , mass spectrometry , chemical ionization , polysaccharide , chromatography , direct electron ionization liquid chromatography–mass spectrometry interface , ionization , analytical chemistry (journal) , organic chemistry , ion
Underivatized short‐chain polysaccharides such as two inulins from different plants containing up to 35‐40 monosaccharide units with molecular weights of up to 6500 Da and dextran T 1.5 containing up to 16‐20 monosaccharide units with molecular weights of up to 3200 Da have been investigated by direct chemical lionization. Under soft ionization conditions such as ammonia chemical ionization and reduced ion‐source temperature, it was possible to obtain spectra of the native polysaccharides showing dominant ion series corresponding to ammonia adduct ions of oligosaccharides, and also ion series corresponding to ammonia adduct ions of anhydro‐oligosaccharides.