DISCRIMINATION OF ISOMERIC OLIGOSACCHARIDES AND SEQUENCING OF UNKNOWNS BY POST SOURCE DECAY MATRIX-ASSISTED LASER-DESORPTION IONIZATION TIME-OF-FLIGHT MASS-SPECTROMETRY

Authors
GAROZZO D NASELLO V SPINA E STURIALE L
Citation
D. Garozzo et al., DISCRIMINATION OF ISOMERIC OLIGOSACCHARIDES AND SEQUENCING OF UNKNOWNS BY POST SOURCE DECAY MATRIX-ASSISTED LASER-DESORPTION IONIZATION TIME-OF-FLIGHT MASS-SPECTROMETRY, Rapid communications in mass spectrometry, 11(14), 1997, pp. 1561-1566
Citations number
18
Categorie Soggetti
Spectroscopy,"Chemistry Analytical
Journal title
Rapid communications in mass spectrometry → ACNP
ISSN journal
09514198
Volume
11
Issue
14
Year of publication
1997
Pages
1561 - 1566
Database
ISI
SICI code
0951-4198(1997)11:14<1561:DOIOAS>2.0.ZU;2-G
Abstract
The PSD spectra of some isomeric oligosaccharides are investigated in order to study the fragmentation mechanisms. Results show that intense peaks are formed from one or more glycosidic linkage cleavages, while ring fragmentation produces very weak signals. Two analytical applica tions of post source decay (PSD) to the structural analysis of oligosa ccharides are also illustrated: the discrimination of isomeric structu res and the identification of a real unknown by combining PSD data wit h the linkage analysis results. (C) 1997 by John Whey & Sons, Ltd.