An ultracompact photo-ionization time-of-flight mass spectrometer with a novel vacuum ultraviolet light source for on-line detection of organic trace compounds and as a detector for gas chromatography |
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| Authors: | Ralf Zimmermann Fabian Mühlberger Katrin Fuhrer Marc Gonin Werner Welthagen |
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| Institution: | (1) Helmholtz Zentrum München, German Research Center of Environmental Health, Institute of Ecological Chemistry, Oberschleiheim, Germany;(2) Department of Analytical Chemistry, University of Augsburg, Augsburg, Germany;(3) BIfA GmbH, Augsburg, Germany;(4) TOFWERK AG, Thun, Switzerland |
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| Abstract: | A recently developed novel intense rare-gas excimer vacuum ultraviolet (VUV) light source, the electron beam-pumped excimer
lamp (EBEL), has been applied to the soft single-photon ionization (SPI) of organic molecules in a compact orthogonal acceleration
time-of-flight mass spectrometer (oaTOFMS). The SPI-oaTOFMS system was applied to the on-line monitoring of tobacco smoke. With this setup, it was possible to analyze the composition
of individual puffs of cigarette smoke. Furthermore, a gas chromatograph (GC) was coupled to the EBEL SPIoaTOFMS system. Soft photo-ionization represents an additional separation dimension. By combination of the gas chromatographic
and the soft-ionization mass spectroscopic separation dimensions, a truly multidimensional comprehensive analytical method
could be derived. |
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