@article{HildebrandtCharbonniereBecketal.2005, author = {Hildebrandt, Niko and Charbonniere, Lo{\"i}c J. and Beck, Michael and Ziessel, Raymond F. and L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {Quantum dots as efficient energy acceptors in a time-resolved fluoroimmunoassay}, issn = {1433-7851}, year = {2005}, language = {en} } @article{Loehmannsroeben2005, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {Laser-induced fluorescence (LIF) spectroscopy and laser-based ion mobility (IM) spectrometry for in-situ analysis of contaminated soils}, year = {2005}, language = {en} } @article{LoehmannsroebenLau2005, author = {L{\"o}hmannsr{\"o}ben, Hans-Gerd and Lau, Steffen}, title = {Isotope selectivity in environmental monitoring : NIR diode laser spectroscopy for isotope-selective sensing of soil-respired carbon dioxide}, year = {2005}, language = {en} } @article{LemkeFernandezTrujilloLoehmannsroeben2005, author = {Lemke, Matthias and Fernandez-Trujillo, R. and L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {In-situ LIF analysis of biological and petroleum-based hydraulic oils on soil}, issn = {1424-8220}, year = {2005}, abstract = {Absorption and fluorescence properties of 4 hydraulic oils ( 3 biological and 1 petroleum-based) were investigated. In-situ LIF (laser-induced fluorescence) analysis of the oils on a brown sandy loam soil was performed. With calibration, quantitative detection was achieved. Estimated limits of detection were below ca. 500 mg/kg for the petroleum-based oil and ca. 2000 mg/kg for one biological oil. A semi-quantitative classification scheme is proposed for monitoring of the biological oils. This approach was applied to investigate the migration of a biological oil in soil- containing compartments, namely a soil column and a soil bed}, language = {en} } @article{SchmalzlinvanDongenKlimantetal.2005, author = {Schmalzlin, E. and van Dongen, J. T. and Klimant, I. and Marmodee, Bettina and Steup, Martin and Fisahn, Joachim and Geigenberger, Peter Ludwig and L{\"o}hmannsr{\"o}ben, Hans-Gerd}, title = {An optical multifrequency phase-modulation method using microbeads for measuring intracellular oxygen concentrations in plants}, issn = {0006-3495}, year = {2005}, abstract = {A technique has been developed to measure absolute intracellular oxygen concentrations in green plants. Oxygen- sensitive phosphorescent microbeads were injected into the cells and an optical multifrequency phase-modulation technique was used to discriminate the sensor signal from the strong auto fluorescence of the plant tissue. The method was established using photosynthesis- competent cells of the giant algae Chara corallina L., and was validated by application to various cell types of other plant species}, language = {en} }