Phase relationships in two-dimensional mass spectrometry.
Fiche publication
Date publication
octobre 2019
Journal
Journal of the American Society for Mass Spectrometry
Auteurs
Membres identifiés du Cancéropôle Est :
Dr DELSUC Marc-André
Tous les auteurs :
van Agthoven MA, Kilgour DPA, Lynch AM, Barrow MP, Morgan TE, Wootton CA, Chiron L, Delsuc MA, O'Connor PB
Lien Pubmed
Résumé
Two-dimensional mass spectrometry (2D MS) is a data-independent tandem mass spectrometry technique in which precursor and fragment ion species can be correlated without the need for prior ion isolation. The behavior of phase in 2D Fourier transform mass spectrometry is investigated with respect to the calculation of phase-corrected absorption-mode 2D mass spectra. 2D MS datasets have a phase that is defined differently in each dimension. In both dimensions, the phase behavior of precursor and fragment ions is found to be different. The dependence of the phase for both precursor and fragment ion signals on various parameters (e.g., modulation frequency, shape of the fragmentation zone) is discussed. Experimental data confirms the theoretical calculations of the phase in each dimension. Understanding the phase relationships in a 2D mass spectrum is beneficial to the development of possible algorithms for phase correction, which may improve both the signal-to-noise ratio and the resolving power of peaks in 2D mass spectra.
Mots clés
Data processing, Fourier transform, Mass spectrometry, Phase correction, Two-dimensional mass spectrometry
Référence
J. Am. Soc. Mass Spectrom.. 2019 Oct 15;: