抄録
Secondary ion mass spectra of bio-organic compounds are presented. The spectra obtained with glycerol matrix differ from those obtained without glycerol(dry surface). Saccharides, glycoside, peptides, antibiotics, and vitamins are investigated. The molecular ions for some of them can hardly be observed even in the FD spectra. However, the protonated molecules for all of these compounds are readily observed in their SIM spectra.
