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Updated: May 26, 2026
08:40
Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
Published on: January 20, 2022
Note: Integration of trapped ion mobility spectrometry with mass spectrometry
F A Fernandez-Lima1, D A Kaplan, M A Park
1Department of Chemistry, Texas A&M University, College Station, Texas 77843-3144, USA. ffernandez@chem.tamu.edu
The Review of Scientific Instruments
|January 10, 2012
Summary
Trapped Ion Mobility Spectrometry coupled with Mass Spectrometry (TIMS-MS) offers fast, tunable gas-phase ion separation. This method allows for rapid analysis or high-resolution separation by adjusting scan speed and gas velocity.
Area of Science:
- Analytical Chemistry
- Physical Chemistry
- Spectrometry
Background:
- Trapped Ion Mobility Spectrometry (TIMS) provides gas-phase ion separation.
- Coupling TIMS with Mass Spectrometry (MS) enables sequential analysis.
- Optimizing TIMS-MS integration is crucial for enhanced analytical performance.
Purpose of the Study:
- To describe the integration of TIMS with MS for complementary ion mobility separation.
- To investigate the factors influencing ion transmission and mobility separation in TIMS-MS.
- To demonstrate the tunable nature of TIMS for both rapid analysis and high-resolution separations.
Main Methods:
- Integration of a trapped ion mobility spectrometer (TIMS) with a mass spectrometer (MS).
- Systematic investigation of ion transmission and mobility separation under varying conditions: ion source, bath gas velocity, scan speed, RF confinement, and ion optics.
- Characterization of TIMS mobility resolution and separation speed.
Main Results:
- Ion transmission and mobility separation are dependent on ion source conditions, bath gas velocity, scan speed, RF confinement, and ion optical settings.
- TIMS mobility resolution is influenced by analysis scan speed and bath gas velocity.
- The TIMS-MS system allows for tunable separation, achieving rapid analysis (~25 ms) or high mobility resolution (R > 80) by adjusting scan speed.
Conclusions:
- The TIMS-MS system provides a versatile platform for gas-phase ion separation.
- The ability to tune separation speed and resolution offers flexibility for diverse analytical applications.
- This integration enhances analytical capabilities by combining fast mobility separation with mass analysis.
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