TY  - GEN
A1  - Löhmannsröben, Hans-Gerd
A1  - Beitz, Toralf
A1  - Luadien, Robert
A1  - Schultze, Rainer
T1  - Laser-based ion mobility spectrometry for sensing  of aromatic compounds
N2  - The drift time spectra of polycyclic aromatic hydrocarbons (PAH), alkylbenzenes and alkylphenylethers were recorded with a laser-based ion mobility (IM) spectrometer. The ion mobilities of all compounds were determined in helium as drift gas. This allows the calculation of the diffusion cross sections (Omegacalc) on the basis of the exact hard sphere scattering model (EHSSM) and their comparison with the experimentally determined diffusion cross sections (Omegaexp). These Omegaexp/Omegacalc-correlations are presented for molecules with a rigid structure like PAH and prove the reliability of the theoretical model and experimental method. The increase of the selectivity of IM spectrometry is demonstrated using resonance enhanced multiphoton ionisation (REMPI) at atmospheric pressure, realized by tuneable lasers. The REMPI spectra of nine alkylbenzenes and alkylphenylethers are investigated. On the basis of these spectra, the complete qualitative distinction of eight compounds in a mixture is shown. These experiments are extended to alkylbenzene isomer mixtures.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 003 
KW  - Laser
KW  - REMPI
KW  - Ion mobility spectrometry
KW  - PAH
Y1  - 2004
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-11892
ER  - 
TY  - CHAP
A1  - Asche, Hartmut
A1  - Böckmann, Christine
A1  - Laue, Steffen
A1  - Löhmannsröben, Hans-Gerd
A1  - Lemke, Matthias
A1  - Schober, Lars
A1  - Reich, Oliver
A1  - Lück, Erika
A1  - Schütte, Marc
A1  - Domsch, Horst
A1  - Makower, Alexander
A1  - Scheller, Frieder W.
A1  - Stöcklein, Wolfgang
A1  - Wollenberger, Ursula
A1  - Schultze, Rainer
A1  - Hengstermann, Theo
A1  - Schael, Frank
T1  - Umweltforschung für das Land Brandenburg : Projekt Umweltanalytik / Umweltmeßtechnik / Informationssysteme
Y1  - 2000
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-3862
SP  - 176
EP  - 227
ER  - 
TY  - GEN
A1  - Schultze, Rainer H.
A1  - Lemke, Matthias
A1  - Löhmannsröben, Hans-Gerd
T1  - Laser-induced fluorescence (LIF) spectroscopy for the in situ analysis of petroleum product-contaminated soils
N2  - Contents: Introduction Experimental Techniques: The LIF demonstrator unit - The LIF demonstrator unit - The mobile LIF spectrometer OPTIMOS - Investigated petroleum products and soil samples Results and Discussion: Photophysical properties of the petroleum products LIF spectroscopic investigations of oil-spiked samples LIF spectroscopic investigations of real-world soils Conclusions
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 9 
Y1  - 2004
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-12271
ER  -