Dresden 2011 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 8: New Mass Spectrometric Methods and Technical Developments
MS 8.2: Vortrag
Donnerstag, 17. März 2011, 11:00–11:15, GÖR 229
Mobile High-Resolution Time-of-Flight Mass Spectrometer for in-situ Analytics — •Johannes Lang1, Timo Dickel1,2, Jens Ebert1, Hans Geißel1,2, Wolfgang Plaß1,2, and Christoph Scheidenberger1,2 — 1II. Physikalisches Institut, JLU Giessen — 2GSI Darmstadt
A compact multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) has been developed. For the first time it allows for mass measurements with a resolving power exceeding 100000 and sub ppm accuracy in a mobile device. Thus it allows to resolve isobars and enables to accurately determine the composition and structure of biomolecules.
The MR-TOF-MS consists of an atmospheric pressure interface for DESI and REIMS, ion cooler, ion trap, time-of-flight analyzer, MCP detector and DAQ. Vacuum system components, power supplies as well as electronics are mounted together with the ion optical spectrometer parts on a single frame with a total volume of 0.8 m3.
Applications of the device within the AmbiProbe research program include in-situ mass spectrometry such as realtime tissue recognition in electrosurgery, identification of mycotoxins and analysis of soil samples for environmental studies.