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Updated: Jun 12, 2026
05:47
Sample Preparation for Probe Electrospray Ionization Mass Spectrometry
Published on: February 19, 2020
Open Probe: a device for ultra fast electron ionization mass spectrometry analysis
Marina Poliak1, Alexander Gordin, Aviv Amirav
1School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel.
Analytical Chemistry
|June 1, 2010
Summary
The Open Probe system offers rapid analysis of various samples using a gas chromatograph mass spectrometer (GC/MS). This innovative technique provides fast, quantitative results without ion suppression effects.
Area of Science:
- Analytical Chemistry
- Mass Spectrometry
- Chemical Analysis
Background:
- Traditional gas chromatograph mass spectrometry (GC/MS) analysis can be time-consuming.
- Direct sample introduction into the mass spectrometer often faces challenges with air leakage and ion suppression.
Purpose of the Study:
- To introduce a novel Open Probe system for rapid GC/MS analysis.
- To demonstrate the system's capability for analyzing diverse sample types with minimal sample preparation.
Main Methods:
- The Open Probe system utilizes a vaporization oven integrated with a GC/MS transfer line.
- Helium purge flow protects the system from air leakage into the mass spectrometer ion source.
- Samples are analyzed by direct insertion into the open probe oven.
Main Results:
- Achieved total analysis cycle times of less than 30 seconds for powders and tablets.
- Successfully analyzed trace amounts of trinitrotoluene (TNT) on human fingerprints.
- Demonstrated uniform, quantitative response without ion suppression effects, compatible with electron ionization library search.
Conclusions:
- The Open Probe is a leak-proof mass spectrometry probe enabling fast analysis.
- It offers a cost-effective solution for GC/MS analysis, providing reliable and quantitative data.
- The system simplifies sample handling and analysis for various applications.
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