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Updated: Aug 18, 2025

Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
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Integrating ion mobility into comprehensive multidimensional metabolomics workflows: critical considerations.

Jody C May1, John A McLean2

  • 1Center for Innovative Technology, Department of Chemistry, Vanderbilt University, Nashville, TN, USA.

Metabolomics : Official Journal of the Metabolomic Society
|December 6, 2022
PubMed
Summary

Ion mobility (IM) enhances metabolomics by increasing peak capacity for better sensitivity and structural selectivity. High-resolution IM (HRIM) promises to overcome current data interpretation challenges and improve sample throughput in omics workflows.

Keywords:
4-dimensional separationsCollision cross section alignment and unificationCompound identificationsMetabolite stereoisomers and charge isomersRT-CCS-m/z triplet features

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Area of Science:

  • Analytical Chemistry
  • Metabolomics
  • Biochemistry

Background:

  • Ion mobility (IM) separation is increasingly integrated into metabolomics, offering enhanced peak capacity, sensitivity, and structural selectivity for metabolite annotation.
  • IM-enabled multidimensional mass spectrometry holds promise for addressing complex challenges in omics research by enabling inline analysis with minimal sample volumes.
  • Despite its benefits, the comprehensive application of multidimensional mass spectrometry presents operational complexities and challenges in data interpretation.

Purpose of the Study:

  • To review the strengths and considerations of incorporating IM analysis into metabolomics workflows.
  • To provide a critical and forward-looking perspective on the challenges and prospects of interpreting IM data for chemical knowledge.
  • To outline strategies for unifying collision cross section (CCS) measurements and discuss the potential of high-resolution ion mobility (HRIM).

Main Methods:

  • Review of current literature and commercial instrumentation in ion mobility metabolomics.
  • Discussion of strategies for unifying collision cross section (CCS) data across different IM techniques.
  • Exploration of high-resolution ion mobility (HRIM) as a solution for contemporary challenges.

Main Results:

  • IM provides significant benefits to sensitivity and structural selectivity in untargeted metabolomics workflows.
  • HRIM offers higher peak capacity, enabling faster liquid chromatography (LC) gradients or solid-phase extraction (SPE) for improved sample throughput.
  • A unified strategy for CCS measurements and the potential of HRIM can address key limitations in current IM metabolomics.

Conclusions:

  • Ion mobility is a valuable addition to metabolomics, enhancing analytical capabilities and metabolite identification.
  • High-resolution ion mobility (HRIM) represents a significant advancement, poised to overcome existing challenges and increase sample throughput.
  • Further development in data interpretation and standardization of CCS measurements is crucial for realizing the full potential of IM in omics research.