Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 466619 |
| Fachzeitschrift | Journal of Chromatography A |
| Jahrgang | 1766 |
| Frühes Online-Datum | 10 Dez. 2025 |
| Publikationsstatus | Veröffentlicht - 11 Jan. 2026 |
Abstract
Supercritical fluid chromatography (SFC) is an effective method for separating complex samples combining the advantages of both high-performance liquid chromatography and gas chromatography. Owing to its high separation speeds, SFC demands a fast and sensitive detector suitable for a wide range of analytes. Therefore, an ultra-fast polarity switching ion mobility spectrometer (IMS) with extended field-switching ion shutter for simultaneously recording ion mobility spectra in positive and negative polarity and ready for coupling with SFC is presented, adding an additional dimension of separation. Furthermore, the integration of both soft X-ray and UV ionization sources provides the flexibility for chemical gas-phase ionization as well as for direct ionization of analytes. Integrating these features, this work presents an ultra-fast polarity switching IMS with a novel heated emitter chip interface for coupling SFC and examines ion losses during polarity switching using different IMS repetition rates and timing parameters. To demonstrate the performance of the IMS, limits of detection for gas-phase samples were determined for different substances in the positive and negative polarity. Subsequent testing of the coupling between SFC and ultra-fast polarity switching IMS was carried out using a chip-based, miniaturized SFC system with acetylacetone as a model compound that forms positive and negative ions in IMS, demonstrating the simultaneous detection of both ion polarities within one single chromatographic run.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Analytische Chemie
- Biochemie, Genetik und Molekularbiologie (insg.)
- Biochemie
- Chemie (insg.)
- Organische Chemie
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in: Journal of Chromatography A, Jahrgang 1766, 466619, 11.01.2026.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Development of an ultra-fast polarity-switching ion mobility spectrometer ready for coupling with supercritical fluid chromatography
AU - Nitschke, Alexander
AU - Hitzemann, Moritz
AU - Thoben, Christian
AU - Gloeden, Gian Luca
AU - Lippmann, Martin
AU - Welters, Klaus
AU - Schwieger, Julius
AU - Belder, Detlev
AU - Zimmermann, Stefan
N1 - Publisher Copyright: © 2025 The Authors
PY - 2026/1/11
Y1 - 2026/1/11
N2 - Supercritical fluid chromatography (SFC) is an effective method for separating complex samples combining the advantages of both high-performance liquid chromatography and gas chromatography. Owing to its high separation speeds, SFC demands a fast and sensitive detector suitable for a wide range of analytes. Therefore, an ultra-fast polarity switching ion mobility spectrometer (IMS) with extended field-switching ion shutter for simultaneously recording ion mobility spectra in positive and negative polarity and ready for coupling with SFC is presented, adding an additional dimension of separation. Furthermore, the integration of both soft X-ray and UV ionization sources provides the flexibility for chemical gas-phase ionization as well as for direct ionization of analytes. Integrating these features, this work presents an ultra-fast polarity switching IMS with a novel heated emitter chip interface for coupling SFC and examines ion losses during polarity switching using different IMS repetition rates and timing parameters. To demonstrate the performance of the IMS, limits of detection for gas-phase samples were determined for different substances in the positive and negative polarity. Subsequent testing of the coupling between SFC and ultra-fast polarity switching IMS was carried out using a chip-based, miniaturized SFC system with acetylacetone as a model compound that forms positive and negative ions in IMS, demonstrating the simultaneous detection of both ion polarities within one single chromatographic run.
AB - Supercritical fluid chromatography (SFC) is an effective method for separating complex samples combining the advantages of both high-performance liquid chromatography and gas chromatography. Owing to its high separation speeds, SFC demands a fast and sensitive detector suitable for a wide range of analytes. Therefore, an ultra-fast polarity switching ion mobility spectrometer (IMS) with extended field-switching ion shutter for simultaneously recording ion mobility spectra in positive and negative polarity and ready for coupling with SFC is presented, adding an additional dimension of separation. Furthermore, the integration of both soft X-ray and UV ionization sources provides the flexibility for chemical gas-phase ionization as well as for direct ionization of analytes. Integrating these features, this work presents an ultra-fast polarity switching IMS with a novel heated emitter chip interface for coupling SFC and examines ion losses during polarity switching using different IMS repetition rates and timing parameters. To demonstrate the performance of the IMS, limits of detection for gas-phase samples were determined for different substances in the positive and negative polarity. Subsequent testing of the coupling between SFC and ultra-fast polarity switching IMS was carried out using a chip-based, miniaturized SFC system with acetylacetone as a model compound that forms positive and negative ions in IMS, demonstrating the simultaneous detection of both ion polarities within one single chromatographic run.
KW - IMS
KW - SFC
KW - SFC-IMS
KW - Ultra-fast polarity switching
UR - http://www.scopus.com/inward/record.url?scp=105024563648&partnerID=8YFLogxK
U2 - 10.1016/j.chroma.2025.466619
DO - 10.1016/j.chroma.2025.466619
M3 - Article
AN - SCOPUS:105024563648
VL - 1766
JO - Journal of Chromatography A
JF - Journal of Chromatography A
SN - 0021-9673
M1 - 466619
ER -