Carbohydrate Research p. 101 - 112 (1988)
Update date:2022-08-11
Topics:
Lau, James M.
McNeil, Michael
Darvill, Alan G.
Albersheim, Peter
Addition of ammonium acetate to the mobile phase in direct-liquid-introduction mass spectrometry enhances the abundance of the protonated molecular ion or ammonium*molecular ion complex for compounds of biological interest.The efficacy of the method was investigated by comparing mass spectra obtained, with and without ammonium acetate, for a variety of underivatized, per-O-acetylated, and per-O-alkylated carbohydrates, and for several underivatized peptides.The mass spectra of the per-O-alkylated carbohydrates obtained by direct-liquid-introduction mass spectrometry with ammonium acetate were also compared to those obtained by thermospray mass spectrometry.
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