Stuttgart 2012 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 3: Resonance Ionization MS, ICPMS and others II
MS 3.4: Vortrag
Montag, 12. März 2012, 17:30–17:45, V57.06
First Performance Results of a Mobile High-Resolution MR-TOF Mass Spectrometer for in-situ Analytical Mass Spectrometry — •Johannes Lang1, Timo Dickel1,2, Wolfgang Plaß1,2, Jens Ebert1, Hans Geisssel1,2, Emma Haettner1,2, Mikhail Yavor3, and Christoph Scheidenberger1,2 — 1II. Physikalisches Institut, JLU Giessen — 2GSI, Darmstadt — 3RAS St. Petersburg
A mobile multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) has been designed, built and commissioned. While other mobile mass spectrometers are restricted to low or medium mass resolving power, this MR-TOF-MS allows for the first time for a mass resolving power exceeding 100.000 and a sub ppm accuracy in a transportable format. It can thus resolve isobars and enables to accurately determine the composition and structure of biomolecules. An atmospheric pressure interface provides compatibility to various atmospheric ion sources. The mass spectrometer part comprises an RFQ mass filter, ion cooler, ion trap, time-of-flight analyzer and detector. Supply electronics, DAQ and control system are mounted together with the spectrometer into a single frame with a total volume of only 0.8m3. First results with the MR-TOF-MS will be presented, and an overview of envisaged life science applications will be given, such as realtime tissue recognition in electrosurgery, identification of mycotoxins and analysis of soil samples for environmental studies.