Forschungsprojekte

[uncategorized]

• Ultra-fast polarity switching ion mobility spectrometer

  It is well known that depending on their gas phase energetic properties, different substances may form positive ions, negative ions or even ions of both polarities in some cases. Thus, non-targeted measurements or measurements aiming to monitor a variety of substances require analyzing ions of both polarities, e.g. in GC-IMS applications. In this project, an ion mobility spectrometer which is able to perform a polarity switch in less than 10 ms has been developed. This allows switching the measurement polarity after every spectrum, thus enabling real-time monitoring of ions of both polarities with a single drift tube and obviating the need for expensive twin drift tubes.

  Year: 2016

  © GEM
• New ionization sources and fast gas chromatography coupled to a mobile mass spectrometer for hazardous substance detection (GC-Plasma-TOF)

  Aim of this research project is a mobile system for fast detection of hazardous substances for first responder applications. For this purpose, a mobile mass spectrometer will be coupled to a fast gas chromatograph for fast analysis of complex samples. Furthermore, four different ionization methods will be employed to improve both substance identification and limits of detection. Our focus is the development of a new plasma source.

  Year: 2019

  Funding: Supported by the German Federal Ministry of Education and Research (BMBF), Grant 13N14888
• Surveillance and Reconnaissance Techniques for Chemical & Biological Threads

  Surveillance and Reconnaissance Techniques for Chemical & Biological Threads (TeChBioT) aims for the development of a miniaturized, low cost, gas chromatography-ion mobility spectroscopy (GC-IMS) instrument that enables fast detection and identification of volatile and low-volatile chemical (CWA) and non-volatile biological warfare agents (BWA).

  Year: 2022

  Funding: European Union’s European Defence Fund (EDF) under grant agreement No 101103176
• Split-ring resonator as detector for liquid and ion chromatography

  The analysis of food and drugs, as well as the monitoring of chemical processes and bioreactors, requires the use of high-performance liquid chromatography (HPLC) and ion chromatography. These processes are best conducted with universal, cost-effective, and sensitive detectors. This project focuses on the use of a split-ring resonator, which detects changes in the electrical and dielectric properties of the eluate from liquid chromatography or ion chromatography by monitoring the amplitude of the transmitted signal using an envelope detector.

  Year: 2023