A new external ionization source for matrix-assisted laser desorption/ionization (MALDI) Fourier transform mass spectrometry is described. This design allows a number of samples to be introduced simultaneously. This capability is important for studying metal ion-coordinated species produced by MALDI. The source is used to observe the effects of alkali metal ion affinities of neutral oligosaccharides on the intensity of the respective quasimolecular ions.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry