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Articles in Scientific Journals |
| 2009 |
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R. Dück, V. Wulf, M. Geißler, H.-U. Baier, M. Wirtz, H.-W. Kling, S. Gäb and O. J. Schmitz Combination of chemical and electron-impact ionisation with GCxGC-qMS for the characterization of fatty alcohol alkoxylate polymers in the low molecular range up to 700 Da submitted to Analytical and Bioanalytical Chemistry |
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V. Wulf, N. Wienand, M. Wirtz, H.-W. Kling, S. Gäb and O. J. Schmitz Analysis of special surfactants by comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry Journal of Chromatography A (doi:10.1016/j.chroma.2009.11.093) in press |
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B. de Montera, D. El-Zeihery, S. Müller, H. Jammes, G. Brem, H.-D. Reichenbach, F. Scheipl, P. Chavatte-Palmer, V. Zakhartchenko, O. J. Schmitz, E. Wolf, J.-P. Renard and S. Hiendleder Quantification of leukocyte genomic 5-methylcytosine levels reveals epigentic plasticity of healthy adult cloned cattle accepted in Cloning and Stem Cells |
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N. Tian, A. Thiessen, R. Schiewek, O. J. Schmitz, D. Hertel, K. Meerholz and E. Holder Efficient Synthesis of Carbazolyl- and Thienyl-Substituted β-Diketonates and Properties of Their Red and Green Light-Emitting Ir(III) Complexes Journal of Organic Chemistry 74 (2009) 2718-2725 |
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C.-M. Fu, G.-H. Lu, O. J. Schmitz, Z.-W. Li and K. S.-Y. Leung Improved chromatographic fingerprints for facile differentiation of two Ganoderma spp. Biomedical Chromatography 23 (2009) 280-288 |
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2005 - 2008 |
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R. Schiewek, R. Mönnikes, V. Wulf, S. Gäb, K. J. Brockmann, T. Benter and O. J. Schmitz* A universal ionisation label for the APLI-(TOF)MS analysis of small molecules and polymers Angewandte Chemie Int. Ed. 47 (2008) 9989-9992 and Angewandte Chemie 120 (2008) 10138-10142 |
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W. Chan, H. Yue, W. T. Poon, Y.-W. Chan, Oliver J. Schmitz, D. W. J. Kwong, R. N. S. Wong and Z. Cai Quantification of aristolochic acid-derived DNA adducts in rat kidney, liver by using liquid chromatography-electrospray ionization mass spectrometry Mutation Research 646 (2008) 17-24 |
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R. Schiewek and O. J. Schmitz* Eine universelle Ionenquelle für GC- und LC-Applikationen GIT Spezial - Separation 1 (2008) 38-39 |
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R. Schiewek, M. Lorenz, K. J. Brockmann, Th. Benter, S. Gäb and O. J. Schmitz* Development of a multimode ion-source for LC- and GC-MS Analytical and Bioanalytical Chemistry 392 (2008) 87-96 |
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P. Schmitt-Kopplin, M. Englmann, R. Rossello-Mora, R. Schiewek, K. J. Brockmann, Th. Benter and O. J. Schmitz* Combining Chip-ESI with APLI (cESILI) as a multimode source for the analysis of complex mixtures with ultrahigh resolution mass spectrometry Analytical and Bioanalytical Chemistry 391 (2008) 2803-2809 |
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V. M. Arlt, M. Stiborová, C. J. Henderson, M. Thiemann, E. Frei, D. Aimová, R. Singh, G. Gamboa da Costa, O. J. Schmitz, P. B. Farmer, C. R. Wolf and D. H. Phillips Metabolic activation of benzo[a]pyrene in vitro by hepatic cytochrome P450 contrasts with detoxification in vivo: experiments with Hepatic Cytochrome P450 Reductase Null mice Carcinogenesis 29 (2008) 656-665 |
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M. Lorenz, R. Schiewek, K. J. Brockmann, O. J. Schmitz, S. Gäb and Th. Benter The destribution of ion acceptance in atmospheric pressure ion sources: Spatially resolved APLI measurements Journal of the American Society for Mass Spectrometry 19 (2008) 400-410 |
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G. Vogt, M. Huber, M. Thiemann, G. van den Boogaart, O. J. Schmitz and C. D. Schubart Production of different phenotypes from the same genotype in the same environment by developmental variation Journal of Experimental Biology 211 (2008) 510-523 |
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J. Hübner, R. Taheri, D.Melchior, H.-W. Kling, S. Gäb and O. J. Schmitz* Analysis of tensides in complex samples with comprehensive two-dimensional gas chromatography coupled with a time-of-flight mass spectrometer Analytical and Bioanalytical Chemistry 388 (2007) 1755-1762 |
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R. Schiewek, M. Schellenträger, R. Mönnikes, M. Lorenz, R. Giese, K.-J. Brockmann, S. Gäb, Th. Benter and O. J. Schmitz* Ultra-sensitive determination of polycyclic aromatic compounds with atmospheric-pressure laser ionization as an interface for GC-MS Analytical Chemistry 79 (2007) 4135-4140 |
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R. Schiewek, M. Wirtz, M. Thiemann, K. Plitt, G. Vogt and O. J. Schmitz* Determination of the DNA methylation level of the marbled crayfish: An increase in sample throughput by an optimised sample preparation Journal of Chromatography B 850 (2007) 548-552 |
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O. J. Schmitz* Kapillarelektrophorese - Eine unterschätzte Analysenmethode? GIT Labor-Fachzeitschrift 11 (2006) 996-997 |
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S. Hiendleder, M. Wirtz, C. Mund, M. Klempt, H.-D. Reichenbach, M. Stojkovic, M. Weppert, H. Wenigerkind, M. Elmlinger, F. Lyko, O. J. Schmitz and E. Wolf Tissue-specific effects of in vitro fertilization procedures on genomic cytosine methylation levels in overgrown and normal sized bovine fetuses Biology of Reproduction 75 (2006) 17-23 |
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J. Hübner, A. Nguyen, F. Turcu, D. Melchior, H.-W. Kling, S. Gäb and O. J. Schmitz* Analysis of alkyl polyglucosides in industrial products by capillary electrophoresis with pulsed-amperometric detection Analytical and Bioanalytical Chemistry 384 (2006) 259-264 |
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O. J. Schmitz* Analysis of DNA modifications Analytical and Bioanalytical Chemistry 384 (2006) 34-36 |
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S. Droste, M. Schellenträger, M. Constapel, S. Gäb, M. Lorenz, K. J. Brockmann, Th. Benter, D. Lubda and O. J. Schmitz* A Silica-based Monolithic Column in capillary-HPLC and CEC coupled with ESI- MS or ES-APLI-MS Electrophoresis 26 (2005) 4098-4103 |
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O. J. Schmitz* Analyse komplexer Mischungen Nachrichten aus der Chemie 11 (2005) 1148-1151 |
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M. Corcoran, A. Parker, J. Orchard, Z. Davis, M. Wirtz, O. J. Schmitz and D. Oscier ZAP-70 methylation status is associated with ZAP-70 expression status in chronic lymphocytic leukemia Haematologica 90 (2005) 1078-1088 |
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M. Wirtz, C. A. Schumann, M. Schellenträger, S. Gäb, J. vom Brocke, M. L. A. Podeschwa, H.-J. Altenbach, D. Oscier and O. J. Schmitz* CE-LIF analysis of endogenous damage in mitochondrial and genomic DNA Electrophoresis 26 (2005) 2599-2607 |
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M. Constapel, M. Schellenträger, O. J. Schmitz, S. Gäb, K. J. Brockmann, R. Giese and Th. Benter Atmospheric-Pressure Laser Ionization: A Novel Ionization Method for Liquid Chromatography - Mass Spectrometry Rapid Communication in Mass Spectrometry 19 (2005) 326-336 |
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2000 - 2004 |
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F. Lyko, D. Stach, A. Benner, S. Stilgenbauer, H. Döhner, M. Wirtz, M. Wiessler and O. J. Schmitz* Quantitative analysis of DNA methylation in chronic lymphocytic leukemia patients Electrophoresis 25 (2004) 1530-1535 |
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M. Wirtz, D. Stach, H.-C. Kliem, M. Wiessler and O. J. Schmitz* Determination of the DNA methylation level in tumor cells by capillary electrophoresis and laser-induced-fluorescence detection Electrophoresis 25 (2004) 839-845 |
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D. Stach, O. J. Schmitz, S. Stilgenbauer, A. Benner, H. Döhner, M. Wießler and F. Lyko Capillary electrophoretic analysis of genomic DNA methylation levels Nucleic Acids Research 31 (2003) e2 |
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O. Schmitz*, C. Wörth, D. Stach and M. Wießler DNA adducts as biomarkers for carcinogenesis analysed by capillary electrophoresis Angewandte Chemie Int. Ed. 41 (2002) 445-448 and Angewandte Chemie 114 (2002) 461-464 |
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D. Stach and O. J. Schmitz* Decrease in concentration of free catechins in tea over time determined by micellar electrokinetic chromatography Journal of Chromatography A 924 (2001) 519-522 |
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C. C. T. Wörth, M. Wießler and O. J. Schmitz* Analysis of catechins and caffeine in tea extracts by micellar electrokinetic chromatography Electrophoresis 21 (2000) 3634-3638 |
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O. Schmitz and E. Richter Capillary Zone Electrophoresis with On-Line Blotting for Separation and Detection of 32P-postlabeled DNA-Adducts Biomarkers 5(4) (2000) 314-321 |
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C. C. T. Wörth, O. Schmitz and M. Wießler Separation and synthesis of fluorescently labeled alkylated DNA-adduct standards Electrophoresis 21 (2000) 2086-2091 |
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K.-C. Schroff, P. Lovich, O. Schmitz, S. Aschhoff, E. Richter and J. Remien Effects of cotinine at cholinergic nicotinic receptors of the sympathetic superior cervical ganglion of the mouse Toxicology 144 (2000) 99-105 |
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1995 - 1999 |
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O. Schmitz, D. Melchior, W. Schuhmann and S. Gäb Postcolumn derivatisation for selective laser-induced fluorescence detection in MEKC of fatty acid hydroperoxides Journal of Chromatography A 814 (1998) 261-265 |
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O. Schmitz and S. Gäb Separation of unsaturated fatty acids and related isomeric hydroperoxides by micellar electrokinetic chromatography Journal of Chromatography A 781 (1997) 215-221 |
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O. Schmitz and S. Gäb Separation of isomeric hydroperoxides of unsaturated fatty acids by CE Journal of Chromatography A 767 (1997) 249-253 |
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*corresponding author |
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Articles in Monographs |
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O. J. Schmitz in J. Cazes (Editor), Encyclopedia of Chromatography, Carbohydrates: Analysis by Capillary Electrophoresis, Marcel Dekker, Inc. (2001) chapter 45, S. 133-135 |
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O. J. Schmitz in P. Hering (Editor), Laser-induced analytical methods in environmental and health research, DNA adducts as biomarkers for carcinogenesis analysed by capillary electrophoresis and laser-induced-fluorescence detection, Springer-Verlag Berlin, Heidelberg, New York (2004) chapter 17, S. 325-337 |
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O. J. Schmitz, T. Benter in: Achille Cappiello (Editor), Advances in LC–MS Instrumentation, Atmospheric pressure laser ionization, Journal of Chromatography Library, Vol. 72 (2007) chapter 6, S. 89-113 |
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O. J. Schmitz, T. Benter in: M. Lackner (Editor), Lasers in Chemistry, Atmospheric pressure laser ionization, Wiley-VCH, Weinheim (2008) chapter 22, S. 639-654 |
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K. J. Brockmann, T. Benter, M. Lorenz, A. L. Mangas Suárez, S. Gäb, O. J. Schmitz, R. Schiewek, R. Mönnikes in: I. Barnes, M. M. Kharytonov (Editors), Simulation and Assessment of Chemical Processes in a Multiphase Environment, Analtical innovations: Development and applications of atmospheric pressure laser ionization (APLI), Springer (2008) S. 219-230 |
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Patents and Patent Applications |
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O. Schmitz, D. Melchior, W. Schuhmann and S.Gäb, Deutsches Patent (Nr. 19803264) Verfahren zur Herstellung von totvolumenfrei gekoppelten Kapillarsäulen in der Kapillarelektrophorese |
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M. Wießler, O. J. Schmitz and C. C. T. Wörth, Deutsche Patentanmeldung (DE 100 02 402 A1) Verfahren zum Bestimmen von Nukleinsäure-Modifikationen |
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T. Benter, K.-J. Brockmann, M. Constapel, S. Gäb, R. Giese and O.J. Schmitz (Anmeldung 2004) Verfahren und Vorrichtung zur massenspektroskopischen Untersuchung von Analyten |