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  • Title: Matrix-assisted laser desorption/ionization mechanism study with dihydroxybenzoic acid isomers as matrices.
    Author: Jessome L, Hsu NY, Wang YS, Chen CH.
    Journal: Rapid Commun Mass Spectrom; 2008; 22(2):130-4. PubMed ID: 18059041.
    Abstract:
    Desorption and ionization efficiencies of matrix-assisted laser desorption/ionization (MALDI) for various biomolecules with different dihydroxybenzoic acid isomers were studied. No clear relationships were observed between MALDI biomolecule signals vs. gas-phase basicity, proton affinity and ionization potential. This indicates the the gas-phase protonation mechanism is not adequate to explain the observed results.
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