Odd‐electron molecular ion and loss of toluene in fast atom bombardment mass spectra of some carotenoids | Zendy

Caccamese Salvatore | Zendy; Garozzo Domenico | Zendy

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Odd‐electron molecular ion and loss of toluene in fast atom bombardment mass spectra of some carotenoids

Author(s) -

Caccamese Salvatore,

Garozzo Domenico

Publication year - 1990

Publication title -

organic mass spectrometry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.475

H-Index - 121

eISSN - 1096-9888

pISSN - 0030-493X

DOI - 10.1002/oms.1210250303

Subject(s) - fast atom bombardment , fragmentation (computing) , toluene , mass spectrum , ion , chemistry , mass spectrometry , atom (system on chip) , polyatomic ion , electron ionization , spectral line , ionic bonding , photochemistry , analytical chemistry (journal) , organic chemistry , ionization , chromatography , physics , astronomy , computer science , embedded system , operating system

Positive‐ion fast atom bombardment (FAB) and B/E linked scan FAB mass spectra of seven carotenoids are reported. In all cases the M +· 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 scan FAB mass spectra to distinguish isomers and to attribute the loss of toluene from the M +· to an ionic fragmentation and not to a thermal process is discussed.

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