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. 2021 Aug 20;122(8):7269–7326. doi: 10.1021/acs.chemrev.1c00212

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© 2021 The Authors. Published by American Chemical Society

Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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Theoretical and experimental mass resolutions (m/Δm) in the m/z range from 1000 to 50 000 Th for the common mass analyzers used in native MS. Shown are plots of R vs m/z for the three mass analyzers (FT-ICR, Orbitrap, and ToF) based on their respective R_max values reported at m/z = 5000–6000 Th (FTICR, 40 000; Orbitrap; 25 000; ToF, 7000) and the theoretically achievable relations between analyzer mass resolution and m/z (FT-ICR (black line), R ∼ z/m; Orbitrap (blue line), R ∼ (z/m)^0.5; ToF (cyan line), R = constant). Dotted lines in the FT-ICR and Orbitrap graphs represent theoretical values for m/z ranges that were not accessible with these mass analyzers at the time of the publication. Reproduced from ref (32). Copyright 2014 American Society for Mass Spectrometry.