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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

(a) The OzESI-MS spectrum of 1 μM methanolic solution of TG(16:0/9Z-18:1/16:0) with 5 mM ammonium acetate recorded as a m/z 551 precursor ion scan and thus showing only the [M+NH₄]⁺ molecular ion and corresponding chemically induced fragment ions. (b) The MS/MS spectrum of the OzESI-MS product ion at m/z 740 (C.E. = 20 eV). (c) The MS/MS spectrum of the OzESI-MS product ion at m/z 788 (C.E. = 20 eV). The symbols • and ■ identify the ozonolysis product ions as α-methoxyhydroperoxides and aldehydes, respectively.

(a) The OzESI-MS spectrum of 1 μM methanolic solution of TG(16:0/9Z-18:1/16:0) with 5 mM ammonium acetate recorded as a m/z 551 precursor ion scan and thus showing only the [M+NH₄]⁺ molecular ion and corresponding chemically induced fragment ions. (b) The MS/MS spectrum of the OzESI-MS product ion at m/z 740 (C.E. = 20 eV). (c) The MS/MS spectrum of the OzESI-MS product ion at m/z 788 (C.E. = 20 eV). The symbols • and ■ identify the ozonolysis product ions as α-methoxyhydroperoxides and aldehydes, respectively.