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. Author manuscript; available in PMC: 2016 Nov 15.
Published in final edited form as: Int J Mass Spectrom. 2015 Nov 15;390:178–186. doi: 10.1016/j.ijms.2015.08.009

Figure 1.

Figure 1

Comparison spectra of a) even electron CID of [9E-DOPC+H]1+ (18:1/18:1) and b) odd-electron He-MAD of the same 1+ protonated lipid. c) and d) show expanded regions of the loss of sn-1 and sn-2 acyl chains for CID and He MAD, respectively. The inset in a) also shows possible cleavages and theoretical masses for fragmentation with no H-atom transfers. The masses in the insert may not agree with those shown in the spectra due to hydride shifts or rearrangements.