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. Author manuscript; available in PMC: 2011 Apr 27.
Published in final edited form as: Anal Chem. 2007 Jun 5;79(13):5013–5022. doi: 10.1021/ac0702185

Figure 2.

Figure 2

Figure 2

(a) The OzESI-MS spectrum from a 1 μM methanolic solution of GPCho(16:0/9Z-18:1) obtained on a conventional electrospray ionization triple quadrupole mass spectrometer coupled to a commercial ozone generator. (b) The m/z 184 precursor ion spectrum obtained under the same conditions as above. (c) The MS/MS spectrum of the m/z 698 chemically induced fragment ion acquired at a collision energy of 20 eV. The symbols • and ■ identify the chemically induced fragment ions corresponding to α-methoxyhydroperoxides and aldehydes, respectively.