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Dresden 2011 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 8: New Mass Spectrometric Methods and Technical Developments

MS 8.2: Talk

Thursday, March 17, 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 Scheidenberger1,21II. 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.

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