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Multifunctional Carbon Fiber Ionization Mass Spectrometry
Meng-Xi Wu1, Hao-Yang Wang1, Jun-Ting Zhang1
1State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, China.
Analytical Chemistry
|September 9, 2016
Summary
A novel carbon fiber ionization (CFI) technique offers efficient mass spectrometric analysis for diverse organic compounds, including those challenging for other methods. This versatile approach enhances chemical screening and clinical testing.
Area of Science:
- Analytical Chemistry
- Mass Spectrometry
Background:
- Traditional mass spectrometry methods like electrospray ionization and electron ionization can struggle with analyzing certain low/nonpolar organic compounds.
- Developing new ionization techniques is crucial for expanding the scope of mass spectrometric analysis.
Purpose of the Study:
- To develop and characterize a novel carbon fiber ionization (CFI) technique for mass spectrometric analysis.
- To evaluate the efficiency and versatility of CFI for analyzing various organic compounds, particularly those difficult to analyze with existing methods.
Main Methods:
- Development of a carbon fiber ionization (CFI) source leveraging the compatibility and dispersion properties of carbon fiber for sample introduction.
- Mass spectrometric analysis of diverse organic compounds, including polycyclic aromatic hydrocarbons, steroids, terpenoids, and organometallic compounds.
- Investigation of the ion formation mechanism, involving desorption and corona discharge ionization.
Main Results:
- CFI-MS demonstrated high efficiency for analyzing low/nonpolar organic compounds, including polycyclic aromatic hydrocarbons, long-chain aliphatic aldehydes, steroids, terpenoids, and organometallic compounds.
- The technique proved effective for compounds not readily analyzed by electrospray or electron ionization.
- CFI-MS was successfully coupled with supercritical fluid chromatography (SFC) and applied to the analysis of exhaled human air.
Conclusions:
- Carbon fiber ionization (CFI) is a fast, convenient, and versatile ionization method for mass spectrometry.
- CFI-MS offers a valuable alternative for analyzing challenging organic compounds and can be coupled with separation techniques.
- The flexibility of CFI-MS opens applications in areas like chemical screening, clinical testing, and forensic analysis.
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