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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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Published on: August 17, 2017

Performance and geometry optimization of the ceramic-based rectilinear ion traps.

Liang Wang1, Fuxing Xu, Chuan-Fan Ding

  • 1Department of Chemistry and Laser Chemistry Institute, Fudan University, Shanghai 200433, China.

Rapid Communications in Mass Spectrometry : RCM
|August 1, 2012
PubMed
Summary

A new ceramic-based rectilinear ion trap (cRIT) demonstrates excellent performance for portable mass spectrometry. This ion trap offers high mass resolution and efficient tandem mass analysis, making it suitable for advanced analytical applications.

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Area of Science:

  • Analytical Chemistry
  • Mass Spectrometry Instrumentation

Background:

  • Rectilinear ion traps (RITs) offer a simplified design for portable mass spectrometers.
  • Ceramic-based rectilinear ion traps (cRITs) were developed to enhance manufacturability and performance.

Purpose of the Study:

  • To construct and evaluate the performance of novel ceramic-based rectilinear ion traps (cRITs).
  • To optimize the geometry of cRITs for improved mass analysis capabilities.

Main Methods:

  • Gold-plated zirconia ceramic electrodes were utilized for cRIT fabrication.
  • Electrospray ionization mass spectrometry (ESI-MS) was employed for performance testing.
  • Protonated ions of arginine (m/z 175) and reserpine (m/z 609) were analyzed.

Main Results:

  • cRITs with high mechanical accuracy (~10 µm) were constructed.
  • A 6 mm × 5 mm cRIT achieved a mass resolution >1800 at m/z 609 at 2190 Th/s.
  • High collision-induced dissociation (CID) efficiency of ~94.8% was observed for MS/MS analysis.

Conclusions:

  • Ceramic-based rectilinear ion traps function as capable linear ion trap mass analyzers.
  • cRITs exhibit high ion storage, excellent mass resolution, and efficient tandem mass analysis.
  • The ease of manufacturing and operation indicates significant potential for cRITs in ion trap mass spectrometry.