A. Morrison, M. Barrat, R. Aneja
1970
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0
Influential Citations
15
Citations
Journal
Chemistry and Physics of Lipids
Abstract
Abstract The mass spectra of 1,3-distearins -d 1 , -d 4 and -d 5 with the deuterium incorporated into the glyceryl moiety, have been investigated in order to clarify the electron-impact induced fragmentation of 1,3-distearin itself. High resolution mass spectrometry has been utilised to give accurate masses of fragment ions and consequently molecular formulae. Where applicable, metastable peaks have been correlated with proposed mechanisms. It has been found that the loss of water from the molecular ion is electron-impact induced and that the hydrogen atoms eliminated arise from the hydroxyl group and the stearoyl chains. There is no appreciable scrambling of deuterium between the chains and the glyceryl head. Many of the fragment ions with molecular weights greater than 200 a.m.u. probably have cyclic structures and most retain the glyceryl residue intact.