Resonance-enhanced multiphoton ionization mass spectrometry (REMPI-MS): applications for process analysis
Thorsten Streibel1, Ralf Zimmermann
1Joint Mass Spectrometry Centre, Institute of Chemistry, University of Rostock, D-18059 Rostock, Germany;
Summary
Resonance-enhanced multiphoton ionization (REMPI) coupled with time-of-flight mass spectrometry (TOFMS) offers a sensitive method for online process analysis. This technique effectively monitors aromatic compounds in various combustion processes.
Area of Science:
- Analytical Chemistry
- Process Analytical Technology (PAT)
Background:
- Process analysis requires specialized techniques for real-time monitoring.
- Mass spectrometry, particularly with soft ionization, is well-suited for online analysis.
Purpose of the Study:
- To present the properties and variations of Resonance-Enhanced Multiphoton Ionization (REMPI).
- To highlight the potential and drawbacks of REMPI for process analysis.
- To discuss applications of REMPI-TOFMS in combustion processes.
Main Methods:
- Utilizing Resonance-Enhanced Multiphoton Ionization (REMPI) as a soft ionization technique.
- Coupling REMPI with Time-of-Flight Mass Spectrometry (TOFMS) for selective and sensitive detection.
- Analyzing various ionization process variations.
Main Results:
- REMPI-TOFMS demonstrates high selectivity and sensitivity for monitoring (poly)aromatic compounds.
- The method is applicable to diverse combustion environments, including flames and exhaust.
- Drawbacks and limitations of the REMPI technique were identified.
Conclusions:
- REMPI-TOFMS is a powerful tool for online process analysis of aromatic species.
- The technique shows significant potential in monitoring combustion processes.
- Future trends involve technical advancements and integration with other analytical methods.
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