@misc{LoehmannsroebenBeitzLuadienetal.2004, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd and Beitz, Toralf and Luadien, Robert and Schultze, Rainer}, title = {Laser-based ion mobility spectrometry for sensing of aromatic compounds}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11892}, year = {2004}, abstract = {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.}, language = {en} } @incollection{AscheBoeckmannLaueetal.2000, author = {Asche, Hartmut and B{\"o}ckmann, Christine and Laue, Steffen and L{\"o}hmannsr{\"o}ben, Hans-Gerd and Lemke, Matthias and Schober, Lars and Reich, Oliver and L{\"u}ck, Erika and Sch{\"u}tte, Marc and Domsch, Horst and Makower, Alexander and Scheller, Frieder W. and St{\"o}cklein, Wolfgang and Wollenberger, Ursula and Schultze, Rainer and Hengstermann, Theo and Schael, Frank}, title = {Umweltforschung f{\"u}r das Land Brandenburg : Projekt Umweltanalytik / UmweltmeƟtechnik / Informationssysteme}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-3862}, publisher = {Universit{\"a}t Potsdam}, pages = {176 -- 227}, year = {2000}, language = {de} } @article{MatthesNawrotzkiSiegmundSchultze1997, author = {Matthes, Klaus and Nawrotzki, Kurt and Siegmund-Schultze, Rainer}, title = {On the structure of spatial branching processes}, year = {1997}, language = {en} } @article{LoehmannsroebenLemkeSchoberetal.2000, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd and Lemke, Matthias and Schober, Lars and Schultze, Rainer}, title = {In-situ Analytik von organischen Bodenkontaminationen mit Laser-induzierter Fluoreszenz}, year = {2000}, language = {de} } @article{LoehmannsroebenTheoLemkeetal.2000, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd and Theo, Hengstermann and Lemke, Matthias and Schober, Lars and Schultze, Rainer}, title = {Entwicklung eines optischen MeƟsystems zur in-situ Bestimmung von Fluoreszenztracern, Sauerstoff und pH- Wert in Gew{\"a}ssern (FLUTRAS: Fluorescence Tracer Detection System)}, year = {2000}, language = {de} } @misc{SchultzeLemkeLoehmannsroeben2004, author = {Schultze, Rainer H. and Lemke, Matthias and L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {Laser-induced fluorescence (LIF) spectroscopy for the in situ analysis of petroleum product-contaminated soils}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-12271}, year = {2004}, abstract = {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}, language = {en} }