Abstract
In our previous study on the gas chromatography-mass spectrometry (GC-MS) analysis of thirty diacid triglycerides (triglycerides containing two different acyl groups in the molecule), we showed the ratio of intensities for two fragment ions possessing either of two constitutive acyl moieties of the triglycerides. Calculation of this ratio was carried out on four kinds of specific fragment ions i.e., RCO+, [RCO+74] +, [RCO+115] +, and [RCO+128] +. In this paper, we described the application of these ratios to the correction of fatty acid composition.
Such a correction was found to make specific fragment ions of greater use in determining fatty acid composition. In particular, the correction of the fragment ion RCO+ was most effective, for this purpose. The correction of fragments ion [RCO+115] + and [RCO+128] + was less so since they were influenced to a greater degree by complex obstructive fragment ions. The reproducibity of results for the fragment ion [RCO+74] + was not completely sufficient owing to the weakness of the ion intensity.
