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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2017 Dec 12;29(3):481–489. doi: 10.1007/s13361-017-1861-2

Figure 4.

Figure 4

Application of UV-induced ozonolysis for FA C=C isomer analysis. (a) Negative ion mode MS spectrum of ozonolysis of 1:1 mixture of oleic acid (FA 18:1(9Z)) and cis-vaccenic acid (FA 18:1 (11Z)). (b) A plot of ratios of aldehyde products of vaccenic/oleic acid vs. their molar concentration ratios (total of 10 μM). c) Negative ion mode ozonolysis MS spectrum of a mixture of two CLA isomers, FA 18:2(9Z, 11E) and FA 18:2(10E, 12Z) ([M-H]−, m/z 279.5).