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Positive and negative fast atom bombardment mass spectrometry and collision spectroscopy in the structural characterization of mono‐, di‐ and triglycerides
Author(s) -
Evans C.,
Traldi P.,
BambagiottiAlberti M.,
Giannellini V.,
Coran S. A.,
Vincieri F. F.
Publication year - 1991
Publication title -
biological mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1052-9306
DOI - 10.1002/bms.1200200604
Subject(s) - fast atom bombardment , mass spectrometry , chemistry , ion , glyceride , analytical chemistry (journal) , characterization (materials science) , atom (system on chip) , moiety , matrix (chemical analysis) , spectroscopy , crystallography , chromatography , materials science , stereochemistry , organic chemistry , physics , nanotechnology , fatty acid , quantum mechanics , computer science , embedded system
The structural characterization of a selection of mono‐, di‐ and triglycerides has been achieved by means of positive and negative ion fast atom bombardment (FAB) mass spectrometry combined with collision experiments. While FAB of the neat samples, without any liquid matrix, leads to the production of [M (R COO)] + and [R COO] − ions without any significantly abundant pseudo‐molecular ions, samples dissolved in m ‐nitrobenzyl alcohol solution containing Nal give rise to abundant [M + Na] + species together with the [M (R COO)] + ions of high diagnostic value. Collisional experiments performed on the [M + Na] + cations afford the identification of each acidic moiety constituting the glyceride. Preliminary attempts at the analyses of olive and seed oil were undertaken.