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  • P-ISSN 2233-4203
  • E-ISSN 2093-8950

Unusual Applications of Kendrick Plots: Recalibration and Tolerance

Mass Spectrometry Letters / Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2023, v.14 no.4, pp.173-177
Fouquet Thierry N. J. (Surgical Analytical & Materials Science (SAMS))
Cabarcos Orlando (Surgical Analytical & Materials Science (SAMS))
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Kendrick plots offer an alternative visualization of mass spectral data which reveals ion series and patterning by turn- ing a mass spectrum into a map, plotting the fractional mass (wrongly called mass defect) as a function of mass-to-charge ratios and ion abundances. Although routinely used for polymer mass spectrometry, two unreported applications of these Kendrick plots are proposed using the program “kendo2”: the graphical recalibration of a mass spectrum via the simulation of a theoretical fractional mass and a multi-segment fit; and the rapid evaluation of scan-to-scan variation of accurate mass measurements used as tolerances for the blank subtraction of UPLC-MS data files. Both applications are compatible with any type of high-resolution MS data including LC/GC-MS(/MS).

Kendrick analysis, polymer mass spectrometry, LC-MS, calibration, blank subtraction, data processing

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Mass Spectrometry Letters