High‐resolution mass spectrometry (HRMS): Focus on the m/z values estimated by the Savitzky–Golay first derivative - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Rapid Communications in Mass Spectrometry Year : 2021

High‐resolution mass spectrometry (HRMS): Focus on the m/z values estimated by the Savitzky–Golay first derivative

Abstract

Rationale The calculation of centroids from profile mass spectra is one of the very first steps in the processing of mass spectra. The output is a signal and a m/z value. We focus on the accuracy of the prediction of the centroids' m/z values. Methods A calculation based on the Savizky-Golay algorithm was evaluated on an Orbitrap mass spectrum. Reference m/z values were identified manually. Experimental centroids were extracted (1) automatically using our algorithm or the MSconvert algorithm and (2) manually using the Xcalibur software from Thermo. The three series of experimental m/z values were compared with the reference m/z values. Results Our algorithm improved the determination of the m/z values compared with MSconvert. However, no improvement was observed over Xcalibur. Conclusions Our algorithm improved the automatic estimation of m/z values in the profile-to-centroid calculation. This is of importance when the goal is to determine raw compositions from the experimental m/z values. Nevertheless, the algorithms led to almost the same m/z values on a higher resolution mass spectrum.
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Dates and versions

hal-03174196 , version 1 (19-03-2021)

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Jean‐claude Boulet, Emmanuelle Meudec, Anna Vallverdu‐queralt, Veronique Cheynier. High‐resolution mass spectrometry (HRMS): Focus on the m/z values estimated by the Savitzky–Golay first derivative. Rapid Communications in Mass Spectrometry, 2021, 35 (6), ⟨10.1002/rcm.9036⟩. ⟨hal-03174196⟩
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