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ETDEWEB ID: 21329230
Title: Extremely high mass resolution and sensitivity - comparison of two novel proton transfer reaction time-of-flight mass spectrometers (PTR-TOFMS)
Authors: Jordan, Alfons; Sulzer, Philipp; Juerschik, Simone; Jaksch, Stefan; Hanel, Gernot; Hartungen, Eugen; Seehauser, Hans; Maerk, Lukas; Haidacher, Stefan; Schottkowsky, Ralf [IONICON Analytik GmbH, Innsbruck (Austria)]; Maerk, Tilmann [IONICON Analytik GmbH, Innsbruck (Austria); Institut fuer Ionenphysik und Angewandte Physik, Universitaet Innsbruck (Austria)]
Publication Date: 2010 Jul 01
Journal Name: Verhandlungen der Deutschen Physikalischen Gesellschaft
Journal Issue: Hanver 2010 issue
Product Size: 1 pages
Description/Abstract: Since many years PTR-MS is a well established technique in trace gas analysis with its major advantages of having very short response times of below 100ms and outstanding detection limits in the single digit pptv region. However, the quadrupole mass filter based instruments used so far cannot separate isobaric compounds due to lack of mass resolution. To overcome this problem Ionicon developed the so called PTR-TOF 8000 instrument, which couples the well established PTR ionization technique with a high resolution time-of-flight (TOF) mass analyzer. In contrast to a quadrupole based PTR-MS where only one nominal mass at a time can be monitored, the PTR-TOF acquires whole mass spectra in split-seconds at a resolution of up to 8.000 m/{delta}m (FWHM). As there might be applications where an enormous mass resolution is not necessarily needed, but the sensitivity has to be as high as possible, we now developed an instrument (called PTR-TOF 2000) that performs with an enhanced sensitivity at the expense of a somewhat lower mass resolution.
Subject Category Code: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Descriptors: COMPARATIVE EVALUATIONS; ION COLLISIONS; ION-ATOM COLLISIONS; IONIZATION; MASS RESOLUTION; SENSITIVITY; TIME-OF-FLIGHT MASS SPECTROMETERS
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