Desorption of valine molecular ions using fast incident atomic and polyatomic ions
β Scribed by Mehran Salehpour; Derry L. Fishel; Jerry E. Hunt
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 449 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0168-1176
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π SIMILAR VOLUMES
Four-sector tandem mass spectra of the molecular and quasi-molecular ions of the cyclic depsipeptide valinomycin (RMM 1110.6) were compared. Electron impact (EI), chemical ionization (CI), fast atom bombardment (FAB), field desorption (FD) and electrospray ionization were used to create M", (M + HI'
## Abstract Positiveβion fast atom bombardment (FAB) and __B/E__ linked scan FAB mass spectra of seven carotenoids are reported. In all cases the M ^+Β·^ ions are observed, and the [M + H]^+^ ions are absent in the hydrocarbons and weak in the oxygenated compounds. The usefulness of __B/E__ linked s