Abstract
Mass spectra of methyl α- and β-eleostearates were measured. Both spectra show that the relative intensity of fragment ions at m/e=91, 93 and 107 is much higher in comparison with that in mass spectrum of methyl linolenate in reference. It is observed that there is a slight difference in the mass spectra of α- and β-eleostearates and this is probably attributable to the difference of the geometrical configuration at 9-position. Further, the relation between electron accelerating voltage and the variation of relative intensity of predominant fragment ions in the mass spectra of both eleostearates was discussed.
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