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Fakultät für Chemie

Raum
S05 V02 E25

Funktionen

  • Gruppe der akademischen Mitarbeiterinnen und Mitarbeiter, Prüfungsausschuss B.Sc./M.Sc.-Studiengang Water Science

  • Wissenschaftliche/r Mitarbeiter/in, Prof. Schmidt

Die folgenden Publikationen sind in der Online-Universitätsbibliographie der Universität Duisburg-Essen verzeichnet. Weitere Informationen finden Sie gegebenenfalls auch auf den persönlichen Webseiten der Person.

    Artikel in Zeitschriften

  • Marks, Robert G.H.; Rockel, Sarah P.; Kerpen, Klaus; Somnitz, Holger; Martin, Philipp R.; Jochmann, Maik A.; Schmidt, Torsten C.
    Effects of pH-dependent speciation on the photolytic degradation mechanism of phosphonates
    In: Journal of Photochemistry and Photobiology A: Chemistry Jg. 448 (2024) 115327
  • Hesse, Tobias; Nachev, Milen; Khaliq, Shaista; Jochmann, Maik A.; Franke, Frederik; Scharsack, Jörn P.; Kurtz, Joachim; Sures, Bernd; Schmidt, Torsten C.
    A new technique to study nutrient flow in host-parasite systems by carbon stable isotope analysis of amino acids and glucose
    In: Scientific Reports Jg. 13 (2023) Nr. 1, 1054
  • Tintrop, Lucie K.; Salemi, Amir; Jochmann, Maik; Engewald, Werner R.; Schmidt, Torsten Claus
    Improving greenness and sustainability of standard analytical methods by microextraction techniques : A critical review
    In: Analytica Chimica Acta Jg. 1271 (2023) 341468
  • Tintrop, Lucie K.; Lieske-Overgrand, Jana R.; Wickneswaran, Kaliyani; Abis, Rukiyye; Brunstermann, Ruth; Jochmann, Maik; Schmidt, Torsten C.
    Isotope-labeling in situ derivatization and HS-SPME arrow GC–MS/MS for simultaneous determination of fatty acids and fatty acid methyl esters in aqueous matrices
    In: Analytical and Bioanalytical Chemistry Jg. 415 (2023) Nr. 26, S. 6525 - 6536
  • Marks, Robert G.H.; Drees, Felix; Rockel, Sarah; Kerpen, Klaus; Jochmann, Maik A.; Schmidt, Torsten C.
    Mechanistic investigation of phosphonate photolysis in aqueous solution by simultaneous LC-IRMS and HRMS analysis
    In: Journal of Photochemistry and Photobiology A: Chemistry Jg. 439 (2023) 114582
  • Vos, Matthijs; Hering, Daniel; Gessner, Mark O.; Leese, Florian; Schäfer, Ralf B.; Tollrian, Ralph; Boenigk, Jens; Haase, Peter; Meckenstock, Rainer; Baikova, Daria; Bayat, Helena; Beermann, Arne; Beißer, Daniela; Beszteri, Bánk; Birk, Sebastian; Boden, Lisa; Brauer, Verena; Brauns, Mario; Buchner, Dominik; Burfeid-Castellanos, Andrea; David, Gwendoline; Deep, Aman; Doliwa, Annemie; Dunthorn, Micah; Enß, Julian; Escobar-Sierra, Camilo; Feld, Christian K.; Fohrer, Nicola; Grabner, Daniel; Hadziomerovic, Una; Jähnig, Sonja C.; Jochmann, Maik; Khaliq, Shaista; Kiesel, Jens; Kuppels, Annabel; Lampert, Kathrin P.; Le, T.T. Yen; Lorenz, Armin W.; Madariaga, Graciela Medina; Meyer, Benjamin; Pantel, Jelena H.; Pimentel, Iris Madge; Mayombo, Ntambwe Serge; Nguyen, Hong Hanh; Peters, Kristin; Pfeifer, Svenja M.; Prati, Sebastian; Probst, Alexander J.; Reiner, Dominik; Rolauffs, Peter; Schlenker, Alexandra; Schmidt, Torsten C.; Shah, Mana; Sieber, Guido; Stach, Tom Lennard; Tielke, Ann-Kathrin; Vermiert, Anna-Maria; Weiss, Martina; Weitere, Markus; Sures, Bernd
    The Asymmetric Response Concept explains ecological consequences of multiple stressor exposure and release
    In: Science of the Total Environment Jg. 872 (2023) 162196
  • Dobaradaran, Sina; Mutke, Xenia A.M.; Schmidt, Torsten Claus; Swiderski, Philipp; De-la-Torre, Gabriel E.; Jochmann, Maik
    Aromatic amines contents of cigarette butts : Fresh and aged cigarette butts vs unsmoked cigarette
    In: Chemosphere Jg. 301 (2022) 134735
  • Marks, Robert; Jochmann, Maik; Brand, Willi A.; Schmidt, Torsten
    How to Couple LC-IRMS with HRMS : A Proof-of-Concept Study
    In: Analytical Chemistry Jg. 94 (2022) Nr. 6, S. 2981 - 2987
  • Kaziur-Cegla, Wiebke; Wykowski, Lena; Jochmann, Maik; Molt, Karl; Bruchmann, Andreas; Schmidt, Torsten Claus
    In-tube dynamic extraction a green solventless alternative for a sensitive headspace analysis of volatile organic compounds in olive oils
    In: Advances in Sample Preparation Jg. 1 (2022) 100002
  • Kaziur-Cegla, Wiebke; Jochmann, Maik A.; Molt, Karl; Bruchmann, Andreas; Schmidt, Torsten Claus
    In-tube dynamic extraction for analysis of volatile organic compounds in honey samples
    In: Food Chemistry: X Jg. 14 (2022) 100337
  • Hesse, Tobias; Nachev, Milen; Khaliq, Shaista; Jochmann, Maik; Franke, Frederik; Scharsack, Jörn P.; Kurtz, Joachim; Sures, Bernd; Schmidt, Torsten Claus
    Insights into amino acid fractionation and incorporation by compound-specific carbon isotope analysis of three-spined sticklebacks
    In: Scientific Reports Jg. 12 (2022) Nr. 1, 11690
  • Terhalle, Jens; Nikutta, Simon E.; Krzeciesa, Dawid L.; Lutze, Holger; Jochmann, Maik; Schmidt, Torsten C.
    Linking reaction rate constants and isotope fractionation of ozonation reactions using phenols as probes
    In: Water Research Jg. 210 (2022) 117931
  • Tintrop, Lucie K.; Jochmann, Maik; Beesley, Thomas; Küppers, Marco; Brunstermann, Ruth; Schmidt, Torsten Claus
    Optimization and automation of rapid and selective analysis of fatty acid methyl esters from aqueous samples by headspace SPME arrow extraction followed by GC–MS/MS analysis
    In: Analytical and Bioanalytical Chemistry Jg. 414 (2022) Nr. 22, S. 6473 - 6483
  • Martin, Philipp R.; Buchner, Daniel; Jochmann, Maik; Elsner, Martin; Haderlein, Stefan B.
    Two Pathways Compete in the Mn(II)-Catalyzed Oxidation of Aminotrismethylene Phosphonate (ATMP)
    In: Environmental Science & Technology Jg. 56 (2022) Nr. 7, S. 4091 - 4100
  • Dobaradaran, Sina; Schmidt, Torsten Claus; Kaziur-Cegla, Wiebke; Jochmann, Maik
    BTEX compounds leachates from cigarette butts into water environment : A primary study
    In: Environmental Pollution Jg. 269 (2021) S. 116185
  • Khademi, Seyed Mohammad; Salemi, Amir; Jochmann, Maik; Joksimoski, Sasho; Telgheder, Ursula
    Development and comparison of direct immersion solid phase micro extraction Arrow-GC-MS for the determination of selected pesticides in water
    In: Microchemical Journal Jg. 164 (2021) 106006
  • Vivas Muñoz, Jenny C.; Feld, Christian; Hilt, Sabine; Manfrin, Alessandro; Nachev, Milen; Köster, Daniel; Jochmann, Maik; Schmidt, Torsten Claus; Sures, Bernd; Ziková, Andrea; Knopf, Klaus
    Eye fluke infection changes diet composition in juvenile European perch (Perca fluviatilis)
    In: Scientific Reports Jg. 11 (2021) Nr. 1, 3440
  • Becker, Christian; Jochmann, Maik; Teutenberg, Thorsten; Schmidt, Torsten Claus
    A nebulizer interface for liquid chromatography - Flame ionization detection : Development and validation
    In: Talanta: The International Journal of Pure and Applied Analytical Chemistry Jg. 206 (2020) 120229
  • Willach, Sarah; Lutze, Holger V.; Somnitz, Holger; Terhalle, Jens; Stojanovic, Nenad; Lüling, Michelle; Jochmann, Maik A.; Hofstetter, Thomas B.; Schmidt, Torsten Claus
    Carbon Isotope Fractionation of Substituted Benzene Analogs during Oxidation with Ozone and Hydroxyl Radicals : How Should Experimental Data Be Interpreted?
    In: Environmental Science & Technology Jg. 54 (2020) Nr. 11, S. 6713 - 6722
  • Becker, Christian; Deeb, Ahmad A.; Teutenberg, Thorsten; Jochmann, Maik; Schmidt, Torsten Claus
    Determination of liquid chromatography/flame ionization detection response factors for N-heterocycles, carboxylic acids, halogenated compounds, and others
    In: Analytical and Bioanalytical Chemistry Jg. 412 (2020) Nr. 1, S. 171 - 179
  • Kaziur-Cegla, Wiebke; Salemi, Amir; Jochmann, Maik; Schmidt, Torsten Claus
    Optimization and validation of automated solid-phase microextraction arrow technique for determination of phosphorus flame retardants in water
    In: Journal of Chromatography A Jg. 1626 (2020) S. 461349
  • Dobaradaran, Sina; Schmidt, Torsten Claus; Lorenzo-Parodi, Nerea; Kaziur-Cegla, Wiebke; Jochmann, Maik; Nabipour, Iraj; Lutze, Holger; Telgheder, Ursula
    Polycyclic aromatic hydrocarbons (PAHs) leachates from cigarette butts into water
    In: Environmental Pollution Jg. 259 (2020) S. 113916
  • Martin, Philipp R.; Buchner, Daniel; Jochmann, Maik; Haderlein, Stefan B.
    Stable carbon isotope analysis of polyphosphonate complexing agents by anion chromatography coupled to isotope ratio mass spectrometry : Method development and application
    In: Analytical and Bioanalytical Chemistry Jg. 412 (2020) Nr. 20, S. 4827 - 4835
  • Gilbert, Beric M.; Nachev, Milen; Jochmann, Maik A.; Schmidt, Torsten Claus; Köster, Daniel; Sures, Bernd; Avenant-Oldewage, Annemariè
    Stable isotope analysis spills the beans about spatial variance in trophic structure in a fish host – parasite system from the Vaal River System, South Africa
    In: International Journal for Parasitology: Parasites and Wildlife Jg. 12 (2020) S. 134 - 141
  • Gilbert, Beric M.; Nachev, Milen; Jochmann, Maik; Schmidt, Torsten Claus; Köster, Daniel; Sures, Bernd; Avenant-Oldewage, Annemariè
    You are how you eat : Differences in trophic position of two parasite species infecting a single host according to stable isotopes
    In: Parasitology Research Jg. 119 (2020) Nr. 4, S. 1393 - 1400
  • Schulte, S.M.; Jochmann, Maik; Wolbert, Jens-Benjamin; Gehrke, Tilman; Schmidt, Torsten Claus
    A centrifuge tube reactor for the determination of bacterial methane oxidation enrichment factors without influence of diffusion related isotope fractionation
    In: Science of the Total Environment Jg. 659 (2019) S. 1382 - 1386
  • Akinlua, Akinsehinwa; Jochmann, Maik; Lorenzo-Parodi, Nerea; Stojanovic, Nenad; Kaziur, Wiebke; Schmidt, Torsten C.
    A green approach for the extraction of diamondoids from petroleum source rock
    In: Analytica Chimica Acta Jg. 1091 (2019) S. 23 - 29
  • Becker, Christian; Jochmann, Maik; Schmidt, Torsten Claus
    An overview of approaches in liquid chromatography flame ionization detection
    In: Trends in Analytical Chemistry (TrAC) Jg. 110 (2019) S. 143 - 149
  • Schulte, Simone M.; Köster, Daniel; Jochmann, Maik; Meckenstock, Rainer
    Applying reverse stable isotope labeling analysis by mid-infrared laser spectroscopy to monitor BDOC in recycled wastewater
    In: Science of the Total Environment Jg. 665 (2019) S. 1064 - 1072
  • Kaziur, Wiebke; Salemi, Amir; Jochmann, Maik; Schmidt, Torsten Claus
    Automated determination of picogram-per-liter level of water taste and odor compounds using solid-phase microextraction arrow coupled with gas chromatography-mass spectrometry
    In: Analytical and Bioanalytical Chemistry (2019)
  • Dobaradaran, Sina; Schmidt, Torsten Claus; Lorenzo-Parodi, Nerea; Jochmann, Maik; Nabipour, Iraj; Raeisi, Alireza; Stojanovic, Nenad; Mahmoodi, Marzieh
    Cigarette butts: An overlooked source of PAHs in the environment?
    In: Environmental Pollution Jg. 249 (2019) S. 932 - 939
  • Kalus, Mark; Lanyumba, Riskyanti; Lorenzo-Parodi, Nerea; Jochmann, Maik; Kerpen, Klaus; Hagemann, Ulrich; Schmidt, Torsten Claus; Barcikowski, Stephan; Gökce, Bilal
    Correction : Determining the role of redox-active materials during laser-induced water decomposition
    In: Physical Chemistry, Chemical Physics (PCCP) Jg. 21 (2019) Nr. 43, S. 24239
  • Becker, Christian; Jochmann, Maik; Schmidt, Torsten Claus
    Determination of liquid chromatography/flame ionization detection response factors for alcohols, ketones, and sugars
    In: Analytical and Bioanalytical Chemistry Jg. 411 (2019) Nr. 12, S. 2635 - 2644
  • Kalus, Mark; Lanyumba, Riskyanti; Lorenzo-Parodi, Nerea; Jochmann, Maik; Kerpen, Klaus; Hagemann, Ulrich; Schmidt, Torsten Claus; Barcikowski, Stephan; Gökce, Bilal; Lorenzo Parodi, Nerea
    Determining the role of redox-active materials during laser-induced water decomposition
    In: Physical Chemistry, Chemical Physics (PCCP) Jg. 21 (2019) Nr. 34, S. 18636 - 18651
  • Köster, Daniel; Jochmann, Maik; Lutze, Holger; Schmidt, Torsten Claus
    Monitoring of the total carbon and nitrogen balance during the mineralization of nitrogen containing compounds by heat activated persulfate
    In: Chemical Engineering Journal Jg. 367 (2019) S. 160 - 168
  • Köster, Daniel; Sanchez Villalobos, Irene M.; Jochmann, Maik; Brand, Willi A.; Schmidt, Torsten Claus
    New Concepts for the Determination of Oxidation Efficiencies in Liquid Chromatography-Isotope Ratio Mass Spectrometry
    In: Analytical Chemistry Jg. 91 (2019) Nr. 8, S. 5067 - 5073
  • Lorenzo-Parodi, Nerea; Kaziur, Wiebke; Stojanovic, Nenad; Jochmann, Maik; Schmidt, Torsten Claus
    Solventless microextraction techniques for water analysis
    In: Trends in Analytical Chemistry (TrAC) Jg. 113 (2019) S. 321 - 331
  • Sures, Bernd; Nachev, Milen; Gilbert, Beric M.; Dos Santos, Quinton Marco; Jochmann, Maik; Köster, Daniel; Schmidt, Torsten Claus; Avenant-Oldewage, Annemarié
    The monogenean Paradiplozoon ichthyoxanthon behaves like a micropredator on two of its hosts, as indicated by stable isotopes
    In: Journal of Helminthology Jg. 93 (2019) Nr. 1, S. 71 - 75
  • Schulte, Marcel; Jochmann, Maik; Gehrke, Tilman; Denecke, Martin; Schmidt, Torsten Claus
    Carbon Isotopic Fractionation via Diffusion in a Coarse Material
    In: Geochemistry, Geophysics, Geosystems Jg. 19 (2018) Nr. 9, S. 3246 - 3253
  • Willach, Sarah; Lutze, Holger; Eckey, Kevin; Löppenberg, Katja; Lüling, Michelle; Wolbert, Jens-Benjamin; Kujawinski, Dorothea M.; Jochmann, Maik; Karst, Uwe; Schmidt, Torsten Claus
    Direct Photolysis of Sulfamethoxazole Using Various Irradiation Sources and Wavelength Ranges - Insights from Degradation Product Analysis and Compound-Specific Stable Isotope Analysis
    In: Environmental Science & Technology Jg. 52 (2018) Nr. 3, S. 1225 - 1233
  • Köster, Daniel; Wolbert, Jens-Benjamin; Schulte, Marcel; Jochmann, Maik; Schmidt, Torsten Claus
    Origin of Xylitol in Chewing Gum : A Compound-Specific Isotope Technique for the Differentiation of Corn- and Wood-Based Xylitol by LC-IRMS
    In: Journal of Agricultural and Food Chemistry Jg. 66 (2018) Nr. 8, S. 2015 - 2020
  • Schulte, Marcel; Jochmann, Maik; Gehrke, Tobias; Thom, Andrea; Ricken, Tim; Denecke, Martin; Schmidt, Torsten Claus
    Characterization of methane oxidation in a simulated landfill cover system by comparing molecular and stable isotope mass balances
    In: Waste Management Jg. 69 (2017) S. 281 - 288
  • Willach, Sarah; Lutze, Holger; Eckey, Kevin; Löppenberg, Katja; Lüling, Michelle; Terhalle, Jens; Wolbert, Jens-Benjamin; Jochmann, Maik; Karst, Uwe; Schmidt, Torsten Claus
    Degradation of sulfamethoxazole using ozone and chlorine dioxide : Compound-specific stable isotope analysis, transformation product analysis and mechanistic aspects
    In: Water Research Jg. 122 (2017) S. 280 - 289
  • Osorio Barajas, Xochitli L.; Hüffer, Thorsten; Mettig, Pascal; Schilling, Beat; Jochmann, Maik; Schmidt, Torsten Claus
    Investigation of carbon-based nanomaterials as sorbents for headspace in-tube extraction of polycyclic aromatic hydrocarbons
    In: Analytical and Bioanalytical Chemistry Jg. 409 (2017) Nr. 15, S. 3861 - 3870
  • Dong, Xiyang; Jochmann, Maik; Elsner, Martin; Meyer, Armin H.; Bäcker, Leonard E.; Rahmatullah, Mona; Schunk, Daniel; Lens, Guido; Meckenstock, Rainer
    Monitoring Microbial Mineralization Using Reverse Stable Isotope Labeling Analysis by Mid-Infrared Laser Spectroscopy
    In: Environmental Science & Technology Jg. 51 (2017) Nr. 20, S. 11876 - 11883
  • Barajas, Xochitli L. Osorio; Jochmann, Maik; Hüffer, Thorsten; Schilling, Beat; Schmidt, Torsten Claus
    Sorbent material characterization using in-tube extraction needles as inverse gas chromatography column
    In: Journal of Separation Science Jg. 40 (2017) Nr. 11, S. 2390 - 2397
  • Nachev, Milen; Jochmann, Maik; Walter, Friederike; Wolbert, Jens-Benjamin; Schulte, Marcel; Schmidt, Torsten Claus; Sures, Bernd
    Understanding trophic interactions in host-parasite associations using stable isotopes of carbon and nitrogen
    In: Parasites and Vectors Jg. 10 (2017) Nr. 1,
  • Weigold, Pascal; El-Hadidi, Mohamed; Ruecker, Alexander; Huson, Daniel H.; Scholten, Thomas; Jochmann, Maik; Kappler, Andreas; Behrens, Sebastian
    A metagenomic-based survey of microbial (de)halogenation potential in a German forest soil
    In: Scientific Reports Jg. 6 (2016) S. 28958
  • Dunkel, Thiemo; Lizette de León Gallegos, Erika; Schönsee, Carina D.; Hesse, Tobias; Jochmann, Maik; Wingender, Jost; Denecke, Martin
    Evaluating the influence of wastewater composition on the growth of Microthrix parvicella by GCxGC/qMS and real-time PCR
    In: Water Research Jg. 88 (2016) S. 510 - 523
  • Kremser, Andreas; Jochmann, Maik; Schmidt, Torsten Claus
    PAL SPME Arrow — evaluation of a novel solid-phase microextraction device for freely dissolved PAHs in water
    In: Analytical and Bioanalytical Chemistry Jg. 408 (2016) Nr. 3, S. 943 - 952
  • Kupilas, Benjamin; Hering, Daniel; Lorenz, Armin; Jochmann, Maik; G. McKie, Brendan; Friberg, Nikolai
    River restoration and the trophic structure of benthic invertebrate communities across 16 European restoration projects
    In: Hydrobiologia Jg. 169 (2016) Nr. 1, S. 105 - 120
  • Kremser, Andreas; Jochmann, Maik; Schmidt, Torsten Claus
    Systematic comparison of static and dynamic headspace sampling techniques for gas chromatography
    In: Analytical and Bioanalytical Chemistry Jg. 408 (2016) Nr. 24, S. 6567 - 6579
  • Rahman, Mohammed M.; Barajas, Xochitli L. O.; Luján, Jacobo L. H.; Jochmann, Maik; Mayer, Christian; Schmidt, Torsten Claus
    Core-Shell hybrid particles by alternating copolymerization of ionic liquid monomers from silica as sorbent for solid phase microextraction
    In: Macromolecular Materials and Engineering Jg. 300 (2015) Nr. 11, S. 1049 - 1056
  • Mogusu, Emmanuel Onyonka; Wolbert, Jens-Benjamin; Kujawinski, Dorothea M.; Jochmann, Maik; Elsner, Martin
    Dual element (15N/14N, 13C/12C) isotope analysis of glyphosate and AMPA by derivatization-gas chromatography isotope ratio mass spectrometry (GC/IRMS) combined with LC/IRMS
    In: Analytical and Bioanalytical Chemistry Jg. 407 (2015) Nr. 18, S. 5249 - 5260
  • Weigold, Pascal; Ruecker, Alexander; Jochmann, Maik; Osorio, Xochitli; Lege, Sascha; Zwiener, C.; Kappler, Andreas; Behrens, Sebastian
    Formation of chloroform and tetrachloroethene by Sinorhizobium meliloti strain 1021
    In: Letters in applied microbiology Jg. 61 (2015) Nr. 4, S. 346 - 353
  • Ruecker, A.; Weigold, P.; Behrens, S.; Jochmann, Maik; Barajas, X. L. Osorio; Kappler, A.
    Halogenated hydrocarbon formation in a moderately acidic salt lake in Western Australia - Role of abiotic and biotic processes
    In: Environmental Chemistry Jg. 12 (2015) Nr. 4, S. 406 - 414
  • Akinlua, Akinsehinwa; Schmidt, Torsten Claus; Jochmann, Maik
    Ionic Liquid as Green Solvent for Leaching of Polycyclic Aromatic Hydrocarbons from Petroleum Source Rock
    In: Industrial & engineering chemistry research Jg. 54 (2015) Nr. 51, S. 12960 - 12965
  • Akinlua, Akinsehinwa; Jochmann, Maik; Schmidt, Torsten Claus
    Microwave-assisted ionic liquid extraction of n-alkanes and isoprenoid hydrocarbons from petroleum source rock
    In: Chromatographia: an international journal for rapid communication in chromatography, electrophoresis, and associated techniques Jg. 78 (2015) Nr. 17, S. 1201 - 1209
  • Blessing, Michaela; Jochmann, Maik; Haderlein, Stefan B.; Schmidt, Torsten Claus
    Optimization of a large-volume injection method for compound-specific isotope analysis of polycyclic aromatic compounds at trace concentrations
    In: Rapid Communications in Mass Spectrometry Jg. 29 (2015) Nr. 24, S. 2349 - 2360
  • Laaks, Jens; Jochmann, Maik; Schilling, Beat; Schmidt, Torsten Claus
    Optimization strategies of in-tube extraction (ITEX) methods
    In: Analytical and Bioanalytical Chemistry Jg. 407 (2015) Nr. 22, S. 6827 - 6838
  • Zhang, Lijun; Thevis, Mario; Piper, Thomas; Jochmann, Maik; Wolbert, Jens-Benjamin; Kujawinski, Dorothea M.; Wiese, Steffen; Teutenberg, Thorsten; Schmidt, Torsten Claus
    Carbon isotope ratio analysis of steroids by high temperature liquid chromatography - isotope ratio mass spectrometry
    In: Analytical Chemistry Jg. 86 (2014) Nr. 5, S. 2297 - 2302
  • Laaks, Jens; Jochmann, Maik; Schilling, Beat; Molt, Karl; Schmidt, Torsten Claus
    In-tube extraction-GC-MS as a high-capacity enrichment technique for the analysis of alcoholic beverages
    In: Journal of Agricultural and Food Chemistry Jg. 62 (2014) Nr. 14, S. 3081 - 3091
  • Ruecker, A.; Weigold, P.; Behrens, S.; Jochmann, Maik; Laaks, J.; Kappler, A.
    Predominance of biotic over abiotic formation of halogenated hydrocarbons in hypersaline sediments in Western Australia
    In: Environmental Science & Technology Jg. 48 (2014) Nr. 16, S. 9170 - 9178
  • Kujawinski, Dorothea M.; Wolbert, Jens-Benjamin; Zhang, Lijun; Jochmann, Maik; Widory, David; Baran, Nicole; Schmidt, Torsten Claus
    Carbon isotope ratio measurements of glyphosate and AMPA by liquid chromatography coupled to isotope ratio mass spectrometry
    In: Analytical and Bioanalytical Chemistry Jg. 405 (2013) Nr. 9, S. 2869 - 2878
  • Schmidt, Torsten Claus; Jochmann, Maik; Laaks, Jens
    Empfindlich, automatisch und ohne Lösungsmittel
    In: Nachrichten aus der Chemie Jg. 61 (2013) S. 54 - 56
  • Hüffer, Thorsten; Osorio, Xochitli; Jochmann, Maik; Schilling, Beat; Schmidt, Torsten Claus
    Multi-walled carbon nanotubes as sorptive material for solventless in-tube microextraction (ITEX2) - a factorial design study
    In: Analytical & bioanalytical chemistry Jg. 405 (2013) Nr. 26, S. 8387 - 8395
  • Wuerfel, Oliver; Greule, Markus; Keppler, Frank; Jochmann, Maik; Schmidt, Torsten Claus
    Position-specific isotope analysis of the methyl group carbon in methylcobalamin for the investigation of biomethylation processes
    In: Analytical and Bioanalytical Chemistry Jg. 405 (2013) Nr. 9, S. 2833 - 2841
  • Zhang, Lijun; Kujawinski, Dorothea M.; Federherr, Eugen; Schmidt, Torsten Claus; Jochmann, Maik
    Caffeine in your drink : natural or synthetic?
    In: Analytical Chemistry Jg. 84 (2012) Nr. 6, S. 2805 - 2810
  • Elsner, Martin; Jochmann, Maik; Hofstetter, Thomas B.; Hunkeler, Daniel; Bernstein, Anat; Schmidt, Torsten Claus; Schimmelmann, Arndt
    Current challenges in compound-specific stable isotope analysis of environmental organic contaminants
    In: Analytical and Bioanalytical Chemistry Jg. 403 (2012) Nr. 9, S. 2471 - 2491
  • Akinlua, Akinsehinwa; Jochmann, Maik; Qian, Yuan; Sulkowski, Martin; Schmidt, Torsten Claus
    Factors controlling leaching of polycyclic aromatic hydrocarbons from petroleum source rock using nonionic surfactant
    In: Chromatographia: an international journal for rapid communication in chromatography, electrophoresis, and associated techniques Jg. 75 (2012) Nr. 5-6, S. 213 - 221
  • Laaks, Jens; Letzel, Thomas; Schmidt, Torsten Claus; Jochmann, Maik
    Fingerprinting of red wine by headspace solid-phase dynamic extraction of volatile constituents
    In: Analytical and Bioanalytical Chemistry Jg. 403 (2012) Nr. 8, S. 2429 - 2436
  • Schmidt, Torsten Claus; Jochmann, Maik
    Origin and Fate of Organic Compounds in Water : Characterization by Compound-Specific Stable Isotope Analysis
    In: Annual Review of Analytical Chemistry Jg. 5 (2012) Nr. 5, S. 133 - 155
  • Laaks, Jens; Jochmann, Maik; Schmidt, Torsten Claus
    Solvent-free microextraction techniques in gas chromatography
    In: Analytical and Bioanalytical Chemistry Jg. 402 (2012) Nr. 2, S. 565 - 571
  • Kujawinski, Dorothea M.; Zhang, Lijun; Schmidt, Torsten Claus; Jochmann, Maik
    When other separation techniques fail : compound-specific carbon isotope ratio analysis of sulfonamide containing pharmaceuticals by high-temperature-liquid chromatography-isotope ratio mass spectrometry
    In: Analytical Chemistry Jg. 84 (2012) Nr. 18, S. 7656 - 7663
  • Bernstein, Anat; Shouakar-Stash, Orfan; Ebert, Karin; Laskov, Christine; Hunkeler, Daniel; Jeannottat, Simon; Sakaguchi-Söder, Kaori; Laaks, Jens; Jochmann, Maik; Cretnik, Stefan; Jager, Johannes; Haderlein, Stefan B.; Schmidt, Torsten Claus; Aravena, Ramon; Elsner, Martin
    Compound-specific chlorine isotope analysis : a comparison of gas chromatography/isotope ratio mass spectrometry and gas chromatography/quadrupole mass spectrometry methods in an interlaboratory study
    In: Analytical Chemistry Jg. 83 (2011) Nr. 20, S. 7624 - 7634
  • Zhang, Lijun; Kujawinski, Dorothea M.; Jochmann, Maik; Schmidt, Torsten Claus
    High-temperature reversed-phase liquid chromatography coupled to isotope ratio mass spectrometry
    In: Rapid Communications in Mass Spectrometry Jg. 25 (2011) Nr. 20, S. 2971 - 2980
  • Akinlua, A.; Jochmann, Maik; Laaks, J.; Ewert, A.; Schmidt, Torsten Claus
    Microwave-assisted nonionic surfactant extraction of aliphatic hydrocarbons from petroleum source rock
    In: Analytica Chimica Acta Jg. 691 (2011) Nr. 1-2, S. 48 - 55
  • Laaks, Jens; Jochmann, Maik; Schilling, Beat; Schmidt, Torsten Claus
    In-tube extraction of volatile organic compounds from aqueous samples : an economical alternative to purge and trap enrichment
    In: Analytical Chemistry Jg. 82 (2010) Nr. 18, S. 7641 - 7648
  • Kujawinski, Dorothea M.; Stephan, Manuel; Jochmann, Maik; Krajenke, Karen; Haas, Joe; Schmidt, Torsten Claus
    Stable carbon and hydrogen isotope analysis of methyl tert-butyl ether and tert-amyl methyl ether by purge and trap-gas chromatography-isotope ratio mass spectrometry : method evaluation and application
    In: Journal of Environmental Monitoring (JEM) Jg. 12 (2010) Nr. 1, S. 347 - 354
  • Telgheder, Ursula; Malinowski, Malwin; Jochmann, Maik
    Determination of volatile organic compounds by solid-phase microextraction-gas chromatography-differential mobility spectrometry
    In: International Journal for Ion Mobility Spectrometry Jg. 12 (2009) Nr. 4, S. 123 - 130
  • Jochmann, Maik; Steinmann, Dirk; Stephan, Manuel; Schmidt, Torsten Claus
    Flow iInjection analysis−isotope ratio mass spectrometry for bulk carbon stable isotope analysis of alcoholic beverages
    In: Journal of Agricultural and Food Chemistry Jg. 57 (2009) Nr. 22, S. 10489 - 10496
  • Jochmann, Maik; Yuan, Xue; Schilling, Beat; Schmidt, Torsten Claus
    In-tube extraction for enrichment of volatile organic hydrocarbons from aqueous samples
    In: Journal of Chromatography A Jg. 1179 (2008) Nr. 2, S. 96 - 105
  • Blessing, Michaela; Jochmann, Maik; Schmidt, Torsten Claus
    Pitfalls in compound-specific isotope analysis of environmental samples
    In: Analytical and Bioanalytical Chemistry Jg. 390 (2008) Nr. 2, S. 591 - 603
  • Jochmann, Maik; Yuan, Xue; Schmidt, Torsten Claus
    Determination of volatile organic hydrocarbons in water samples by solid-phase dynamic extraction
    In: Analytical and Bioanalytical Chemistry Jg. 387 (2007) Nr. 6, S. 2163 - 2174
  • Gocht, Tilman; Barth, Johannes A. C.; Epp, Michaela; Jochmann, Maik; Blessing, Michaela; Schmidt, Torsten Claus; Grathwohl, Peter
    Indications for pedogenic formation of perylene in a terrestrial soil profile : depth distribution and first results from stable carbon isotope ratios
    In: Applied Geochemistry Jg. 22 (2007) Nr. 12, S. 2652 - 2663
  • Schmidt, Torsten Claus; Jochmann, Maik; Blessing, Michaela
    Isotopenanalyse : ein neues Werkzeug in der Umweltanalytik
    In: Nachrichten aus der Chemie Jg. 55 (2007) Nr. 5, S. 536 - 539
  • Jochmann, Maik; Blessing, Michaela; Haderlein, Stefan B.; Schmidt, Torsten Claus
    A new approach to determine method detection limits for compound-specific isotope analysis of volatile organic compounds
    In: Rapid Communications in Mass Spectrometry Jg. 20 (2006) Nr. 24, S. 3639 - 3648
  • Jochmann, Maik; Kmiecik, Magda P.; Schmidt, Torsten Claus
    Solid-phase dynamic extraction for the enrichment of polar volatile organic compounds from water
    In: Journal of Chromatography A Jg. 1115 (2006) Nr. 1/2, S. 208 - 216
  • Bücher/Sammelwerke/Tagungsbände

  • Jochmann, Maik; Schmidt, Torsten Claus
    Compound-specific Stable Isotope Analysis
    Cambridge (2012) 376 S.
  • Poster / Posterbeiträge

  • Dunkel, Thiemo; Lizette de León Gallegos, Erika; Schönsee, Carina D.; Hesse, Tobias; Jochmann, Maik; Denecke, Martin; Wingender, Jost;
    Evaluating influences of wastewater composition on the growth of M. Parvicella by GCxGC-qMS and QPCR : poster presentation
    12th IWA Leading Edge Conference on Water and Wastewater Technologies, 30.05.-03.06.2015, Hongkong,
    (2015)