Abstract
Normally, a glycerol matrix is essential in sputtered ion mass spectrometry such as fast atom bombardment (FAB) and molecular secondary ion mass spectrometry (SIMS) [1]. Recently, we have successfully applied an amine matrix, diethanolamine (DEA) and triethanolamine (TEA), instead of glycerol for the determination of molecular weight of neutral oligosaccharides by molecular SIMS [2]. When DEA was used, a stable molecular adduct ion species, the [M+DEAH]+ ion, was formed as the sole ion derived from a neutral saccharide molecule and no fragment ions were detected. Moreover, the [M+DEAH]+ ion scarcely decomposed even under collisionally activated dissociation (CAD) conditions.KeywordsFast Atom BombardmentAmino SugarAminoglycoside AntibioticCollisionally Activate DissociationProtonated MoleculeThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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