P2.03 - Bundled column GC-IMS – a miniaturized system for fast and sensitive on-site analytics
- 14. Dresdner Sensor-Symposium 2019
2019-12-02 - 2019-12-04
- P2. Technologien
- A. Ahrens, S. Zimmermann - Leibniz University Hannover, Hannover/D
- 172 - 175
Ion mobility spectrometers (IMS) are powerful analytical tools for monitoring, detecting and identifying compounds at trace levels. Drift tube IMS separate and analyze ions within milliseconds based on their motion through a neutral gas along a homogeneous electric field.
Nowadays, IMS are established in various kinds of analytical applications, e.g. in the field of safety and security [1,2], food industries  and the medical sector [4,5]. For some of these applications, mobile or hand-held devices are required. Thus, miniaturized and lightweight systems are needed and different approaches have been reported [6–8]. The key challenge of miniaturization is to keep the analytical power of the instrument. Major performance factors are the limits of detection (LoDs) and the resolving power RP. As shown in Eq. 1, the latter is defined as the quotient of the drift time t_d of a peak in the ion mobility spectrum and the related full width at half maximum ...