ArticleRapid communications in mass spectrometry : RCM2023
Chemical mass shifts of cluster ions and adduct ions in quadrupolar ion traps revisited and extended.
Article in Rapid communications in mass spectrometry : RCM, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Mass Spectrometry in Chiral Analysis and Synthesis.Chirality · 2026Article
- Chemical mass shifts of cluster ions and adduct ions in quadrupolar ion traps revisited and extended.Rapid communications in mass spectrometry : RCM · 2023Article
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Abstract
rationaleChemical mass shifts in quadrupolar ion traps have been studied previously but only for a limited number of analytes and mass ranges. Here, mass shifts of cluster ions, commonly used as calibrants, and other analytes are qualitatively evaluated on the Bruker amaZon spherical ion trap (QIT) and the Finnigan LXQ linear ion trap (LIT). To extend the mass range from previous experiments m/z up to 4000 are investigated.
methodsChemical mass shifts of CsI, Y(HCOO)
resultsOn both instruments, peak distortions and mass shifts toward lower m/z became apparent as m/z approached 1000. To some extent, the issues were more severe at slower scans. Peak distortions included loss of resolution, tailing, or fronting and were different between the amaZon QIT and the LXQ LIT. The noncluster and nonadduct ions analyzed showed no obvious mass shifts or peak distortions under the same analysis conditions.
conclusionsAs expected, the ion traps investigated here showed mass shift and peak distortion issues, and such issues persisted at m/z up to 4000 on both instruments. Peak distortions were different between the amaZon QIT and the LXQ LIT, and were not always visible despite mass shifts. Both mass shifts and peak distortions make cluster ions and some adduct ions unsuitable for ion trap calibration.
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