The effect of the variation of cation in the matrix-assisted laser desorption/ionisation-collision induced dissociation (MALDI-CID) spectra of oligomeric systems

James Scrivens, A. T. Jackson, H. T. Yates, M. R. Green, G. Critchley, J. Brown, R. H. Bateman, M. T. Bowers, J. Gidden

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The effect of the variation of the cation, on the matrix-assisted laser desorption/ionisation collision induced dissociation (MALDI-CID) spectra obtained, has been studied in a hybrid sector-orthogonal acceleration-time of flight tandem mass spectrometer for some synthetic oligomeric systems. Oligomers of poly(methyl methacrylate) and poly(styrene) in the molecular weight range of approximately 1000-3000 u were analysed. They were ionised by attachment of various alkali metal and copper and silver ions, respectively. The MALDI-CID spectra are shown to vary with different cations more from precursor ions of lower than those of higher mass-to-charge ratio.

Original languageEnglish
Pages (from-to)363-375
Number of pages13
JournalInternational Journal of Mass Spectrometry and Ion Processes
Publication statusPublished - 1 Dec 1997


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