Hannover 2013 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 2: Precision Mass Spectrometry and Fundamental Applications II
MS 2.5: Vortrag
Montag, 18. März 2013, 15:15–15:30, F 442
Performance Results and Operation Modes of a Mobile High-Resolution MR-TOF Mass Spectrometer for in-situ Analytics — •Johannes Lang1, Timo Dickel1,2, Hans Geissel1,2, Wayne Lippert1, Wolfgang Plaß1,2, Christoph Scheidenberger1,2, and Mikhail Yavor3 — 1II. Physikalisches Institut, JLU Giessen — 2GSI, Darmstadt — 3RAS St. Petersburg
While conventional mobile MS are restricted to moderate performance, this multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) allows for the first time a mass resolving power exceeding 100,000 and sub ppm accuracy in a transportable format. Thus it allows to resolve isobars and enables to accurately determine the composition and structure of large biomolecules. The instrument offers further features along with high resolution, such as high resolution tandem MS and isobar separation.
The MR-TOF-MS consists of an atmospheric pressure interface for various atmospheric ion sources, RFQ beam preparation system (mass filter, ion cooler, ion trap), time-of-flight analyzer and detector. The complete instrument is mounted into a single frame with a total volume of only 0.8m3. Future versions can be reduced in size even further to fit specialized applications.
A characterization of the system and results with atmospheric ion sources will be demonstrated. Special operation modes will be explained and an overview of life science application will be given, including realtime tissue recognition in electrosurgery, identification of mycotoxins and the analysis of soil samples for environmental studies.