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研究了六种苯丙型苷与Na~+加合离子的快原子轰击质谱(FAB—MS)和质量分离离子动能谱(MIKES)。结果表明:在FAB谱中[M+Na]~+加合离子的丰度要比[M+H]~+离子高得多。由此可给出糖苷的分子量信息,[M+Na]~+离子的MIKES谱可给出糖基序列信息。
The fast atom bombardment mass spectrometry (FAB-MS) and mass separation ion kinetic spectroscopy (MIKES) of six phenyl gamma glycosides and Na~+ adduct ions were studied. The results show that the abundance of [M+Na]~+ adduct ions is much higher than that of [M+H]~+ ions in FAB spectra. This gives information on the molecular weight of glycosides, and the MIKES spectrum of [M+Na]~+ ions gives glycan sequence information.