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Updated: Aug 17, 2026

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Published on: April 3, 2026
Comprehensive analysis of a multidimensional liquid chromatography mass spectrometry dataset acquired on a quadrupole
Robert J Chalkley1, Peter R Baker, Kirk C Hansen
1Mass Spectrometry Facility, University of California San Francisco, San Francisco, California 94143-0446, USA. robertc@itsa.ucsf.edu
Abstract:
An in-depth analysis of a multidimensional chromatography-mass spectrometry dataset acquired on a quadrupole selecting, quadrupole collision cell, time-of-flight (QqTOF) geometry instrument was carried out. A total of 3269 CID spectra were acquired. Through manual verification of database search results and de novo interpretation of spectra 2368 spectra could be confidently determined as predicted tryptic peptides. A detailed analysis of the non-matching spectra was also carried out, highlighting what the non-matching spectra in a database search typically are composed of. The results of this comprehensive dataset study demonstrate that QqTOF instruments produce information-rich data of which a high percentage of the data is readily interpretable.
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