Atmospheric Pressure Drift Tube Ion Mobility−Orbitrap Mass Spectrometry, ion mobility, ion mobility spectrometry, high performance ion mobility spectrometry, Orbitrap, Thermo Fisher Scientific, API, Atmospheric pressure drift tube ion mobility, IMS-MS, Ion mobility mass spectrometry
Ion mobility mass spectrometry (IMS-MS) provides an additional analytical separation dimension as well as the ability for ion selection and filtering based on size-to-charge ratios, ultimately enabling increases in instrument specificity, peak capacity, and dynamic range. This paper showcases the optimized AP-DTIMS-Orbitrap MS system., i Isobaric peptide and sugar isomers were successfully resolved, and the identities of separated species were validated by high-energy collision dissociation experiments.