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. Author manuscript; available in PMC: 2016 Nov 17.
Published in final edited form as: Anal Chem. 2015 Oct 27;87(22):11255–11262. doi: 10.1021/acs.analchem.5b02243

Figure 1.

Figure 1

(a) Structures of the ionized lipids [(PC 17:0/14:1) + H]+ and [(PE 16:0/18:1) + H]+. (b) Positive mode ionization and isolation of isomeric ion mixture (1 μM each). (c) Spectrum resulting from the ion/ion reaction between the isomeric ions [(PC 17:0/14:1) + H]+ and [(PE 16:0/18:1) + H]+ and the reagent dianion [PDPA − 2H]2−. Measured m/z values for the labeled peaks are provided in (b) and (c).