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).