Unique Structural Information Obtained from Metal Adducts on Mass Spectrometry

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  • 金属イオン付加体を用いた質量分析による脂質構造解析

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<p>On electrospray ionization-mass spectrometry (ESI-MS), several adduct ions such as [M+H]+, [M+NH4]+, [M+CH3COO]-, [M+Na]+, and [M+K]+ are observed. Among them, metal adduct ions have been recently focusing for their characteristics that provides unique fragmentation. A coordination position of metal ion is totally different from H+ and NH4 +, and the coordination is considered to be based on cation-π electron interaction. Coordination of metal ion brings the changes of some geometric parameters and binding energies of the ion, which results in strikingly different fragmentation from that of [M+H]+ and [M+NH4]+. In this review, we introduced the mechanisms about coordination of metal ion and some examples of structural analysis focusing on lipid.</p>

Journal

  • Oleoscience

    Oleoscience 22 (6), 287-295, 2022

    Japan Oil Chemists' Society

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