Publications by authors named "Thomas Knepper"

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Method development for the analysis of synthesis markers from clandestine amphetamine production via the Leuckart route in wastewater using polydimethylsiloxane rods for passive sampling in combination with GC-MS techniques.
Maximilian Greif, Jennifer Rosin, Thorsten Rößler, Thomas P Knepper, Carolin Huhn

Forensic Sci Int· December 2025

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Rapid Assessment of Samples from Large-Scale Clandestine Synthetic Drug Laboratories by Soft Ionization by Chemical Reaction in Transfer-High-Resolution Mass Spectrometry.
Maximilian Greif, Tobias Frömel, Thomas P Knepper, Carolin Huhn, Stephan Wagner

J Am Soc Mass Spectrom· June 2025

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Fate of persistent and mobile chemicals in the water cycle: From municipal wastewater discharges to river bank filtrate.
Matthias Muschket, Isabelle J Neuwald, Daniel Zahn, Alina H Seelig, Jochen Kuckelkorn, Thomas P Knepper

Water Res· November 2024

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Interspecies comparison of metabolism of two novel prototype PFAS.
Viktória Licul-Kucera, Oddný Ragnarsdóttir, Tobias Frömel, Annemarie P van Wezel, Thomas P Knepper

Chemosphere· March 2024

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Finding a way out? Comprehensive biotransformation study of novel fluorinated surfactants.
Viktória Licul-Kucera, Tobias Frömel, Martin Kruså, Annemarie P van Wezel, Thomas P Knepper

Chemosphere· October 2023

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Efficacy of activated carbon filtration and ozonation to remove persistent and mobile substances - A case study in two wastewater treatment plants.
Isabelle J Neuwald, Matthias Muschket, Alina H Seelig, Daniel Sauter, Regina Gnirss, Thomas P Knepper

Sci Total Environ· August 2023

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Narrowing the analytical gap for water-soluble polymers: A novel trace-analytical method and first quantitative occurrence data for polyethylene oxide in surface and wastewater.
Frances Pauelsen, Sven Huppertsberg, Thomas P Knepper, Daniel Zahn

Sci Total Environ· July 2023

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Unraveling the dynamics of organic micropollutants in wastewater: Online LC-MS/MS analysis at high temporal resolution.
Niklas Köke, Fernando Solano, Thomas P Knepper, Tobias Frömel

Environ Pollut· October 2022

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Rethinking the relevance of microplastics as vector for anthropogenic contaminants: Adsorption of toxicants to microplastics during exposure in a highly polluted stream - Analytical quantification and assessment of toxic effects in zebrafish (Danio rerio).
Lisa Hanslik, Sven Huppertsberg, Nadine Kämmer, Thomas P Knepper, Thomas Braunbeck

Sci Total Environ· April 2022

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Biomarker responses in zebrafish (Danio rerio) following long-term exposure to microplastic-associated chlorpyrifos and benzo(k)fluoranthene.
Lisa Hanslik, Bettina Seiwert, Sven Huppertsberg, Thomas P Knepper, Thorsten Reemtsma

Aquat Toxicol· April 2022

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Nontarget screening of production waste samples from Leuckart amphetamine synthesis using liquid chromatography - high-resolution mass spectrometry as a complementary method to GC-MS impurity profiling.
Maximilian Greif, Niklas Köke, Michael Pütz, Thorsten Rößler, Thomas P Knepper

Drug Test Anal· March 2022

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Probing the chemical complexity of tires: Identification of potential tire-borne water contaminants with high-resolution mass spectrometry.
Kathrin Müller, Daniel Hübner, Sven Huppertsberg, Thomas P Knepper, Daniel Zahn

Sci Total Environ· January 2022

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Synthetic cannabinoid receptor agonists and their human metabolites in sewage water: Stability assessment and identification of transformation products.
Petra Hehet, Niklas Köke, Daniel Zahn, Tobias Frömel, Thorsten Rößler, Thomas P Knepper

Drug Test Anal· October 2021

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Filling the knowledge gap: A suspect screening study for 1310 potentially persistent and mobile chemicals with SFC- and HILIC-HRMS in two German river systems.
Isabelle Neuwald, Matthias Muschket, Daniel Zahn, Urs Berger, Bettina Seiwert, Thomas P Knepper

Water Res· October 2021

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Microplastic-associated trophic transfer of benzo(k)fluoranthene in a limnic food web: Effects in two freshwater invertebrates (Daphnia magna, Chironomus riparius) and zebrafish (Danio rerio).
Lisa Hanslik, Carmen Sommer, Sven Huppertsberg, Stefan Dittmar, Thomas P Knepper

Comp Biochem Physiol C Toxicol Pharmacol· November 2020

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Analysis of mobile chemicals in the aquatic environment-current capabilities, limitations and future perspectives.
Daniel Zahn, Isabelle J Neuwald, Thomas P Knepper

Anal Bioanal Chem· August 2020

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Matrix effects in the analysis of polar organic water contaminants with HILIC-ESI-MS.
Kathrin Müller, Daniel Zahn, Tobias Frömel, Thomas P Knepper

Anal Bioanal Chem· August 2020

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Persistent and mobile organic compounds-an environmental challenge.
Thomas P Knepper, Thorsten Reemtsma, Torsten C Schmidt

Anal Bioanal Chem· August 2020

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Are (fluorinated) ionic liquids relevant environmental contaminants? High-resolution mass spectrometric screening for per- and polyfluoroalkyl substances in environmental water samples led to the detection of a fluorinated ionic liquid.
Isabelle J Neuwald, Daniel Zahn, Thomas P Knepper

Anal Bioanal Chem· August 2020

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Making waves: Water-soluble polymers in the aquatic environment: An overlooked class of synthetic polymers?
Sven Huppertsberg, Daniel Zahn, Frances Pauelsen, Thorsten Reemtsma, Thomas P Knepper

Water Res· August 2020

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Combined study of source, environmental monitoring and fate of branched alkylphenols: The chain length matters.
Raphael M Janousek, Jutta Müller, Thomas P Knepper

Chemosphere· February 2020

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Profiling of synthesis-related impurities of the synthetic cannabinoid Cumyl-5F-PINACA in seized samples of e-liquids via multivariate analysis of UHPLC-MS data.
Sascha Münster-Müller, Isabelle Matzenbach, Thomas Knepper, Ralf Zimmermann, Michael Pütz

Drug Test Anal· January 2020

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Previously unidentified sources of perfluoroalkyl and polyfluoroalkyl substances from building materials and industrial fabrics.
Raphael M Janousek, Stephan Lebertz, Thomas P Knepper

Environ Sci Process Impacts· November 2019

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Halomethanesulfonic Acids-A New Class of Polar Disinfection Byproducts: Standard Synthesis, Occurrence, and Indirect Assessment of Mitigation Options.
Daniel Zahn, Reinhard Meusinger, Tobias Frömel, Thomas P Knepper

Environ Sci Technol· August 2019

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The flame-not the ashes: achievements and heritage of a passionate analytical chemist.
Leo Gros, Thomas P Knepper

Anal Bioanal Chem· April 2019

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