Publications by authors named "Andreas Ewald"

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Pulverized Sewage Sludge Combustion with Potassium Chloride AdditionFate of Phosphorus, Potassium, Sulfur, and Heavy Metals.
Andreas Ewald, Gabriel Roeder, Hartmut Spliethoff, Sebastian Fendt

ACS Omega· June 2025

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Distribution of Synthetic Cannabinoids JWH-210, RCS-4 and Δ 9-Tetrahydrocannabinol After Intravenous Administration to Pigs.
Nadine Schaefer, Mattias Kettner, Matthias W Laschke, Julia Schlote, Andreas H Ewald

Curr Neuropharmacol· March 2018

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Metabolic patterns of JWH-210, RCS-4, and THC in pig urine elucidated using LC-HR-MS/MS: Do they reflect patterns in humans?
Nadine Schaefer, Andreas G Helfer, Mattias Kettner, Matthias W Laschke, Julia Schlote, Andreas H Ewald

Drug Test Anal· April 2017

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Development and validation of a multi-analyte LC-MS/MS approach for quantification of neuroleptics in whole blood, plasma, and serum.
Deborah Montenarh, Markus Hopf, Hans H Maurer, Peter Schmidt, Andreas H Ewald

Drug Test Anal· October 2016

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Pharmacokinetics of (synthetic) cannabinoids in pigs and their relevance for clinical and forensic toxicology.
Nadine Schaefer, Jan-Georg Wojtyniak, Mattias Kettner, Julia Schlote, Matthias W Laschke, Andreas H Ewald

Toxicol Lett· June 2016

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Simultaneous LC-MS/MS determination of JWH-210, RCS-4, ∆(9)-tetrahydrocannabinol, and their main metabolites in pig and human serum, whole blood, and urine for comparing pharmacokinetic data.
Nadine Schaefer, Mattias Kettner, Matthias W Laschke, Julia Schlote, Benjamin Peters, Andreas H Ewald

Anal Bioanal Chem· May 2015

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A simple extraction and LC-MS/MS approach for the screening and identification of over 100 analytes in eight different matrices.
Deborah Montenarh, Markus Hopf, Stefan Warth, Hans H Maurer, Peter Schmidt, Andreas H Ewald

Drug Test Anal· March 2015

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[New drugs--chemical, pharmacological, metabolical, analytical and legal aspects].
Andreas H Ewald

Med Monatsschr Pharm· March 2015

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Quantification of 33 antidepressants by LC-MS/MS--comparative validation in whole blood, plasma, and serum.
Deborah Montenarh, Mathias P Wernet, Markus Hopf, Hans H Maurer, Peter H Schmidt, Andreas H Ewald

Anal Bioanal Chem· September 2014

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Can JWH-210 and JWH-122 be detected in adipose tissue four weeks after single oral drug administration to rats?
Nadine Schaefer, Benjamin Peters, Dietmar Bregel, Hans H Maurer, Peter H Schmidt, Andreas H Ewald

Biomed Chromatogr· August 2014

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Detection and quantification of benzodiazepines and Z-drugs in human whole blood, plasma, and serum samples as part of a comprehensive multi-analyte LC-MS/MS approach.
Deborah Montenarh, Markus Hopf, Hans H Maurer, Peter Schmidt, Andreas H Ewald

Anal Bioanal Chem· January 2014

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Development and validation of two LC-MS/MS methods for the detection and quantification of amphetamines, designer amphetamines, benzoylecgonine, benzodiazepines, opiates, and opioids in urine using turbulent flow chromatography.
Nadine Schaefer, Benjamin Peters, Peter Schmidt, Andreas H Ewald

Anal Bioanal Chem· January 2013

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A fatal complication of doxylamine in a 1-year-old girl.
Elisabeth Elena Turk, Andreas Ewald

Int J Legal Med· May 2012

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Towards a universal LC-MS screening procedure - can an LIT LC-MS(n) screening approach and reference library be used on a quadrupole-LIT hybrid instrument?
Dirk K Wissenbach, Markus R Meyer, Armin A Weber, Daniela Remane, Andreas H Ewald

J Mass Spectrom· January 2012

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2,5-Dimethoxyamphetamine-derived designer drugs: studies on the identification of cytochrome P450 (CYP) isoenzymes involved in formation of their main metabolites and on their capability to inhibit CYP2D6.
Andreas H Ewald, Hans H Maurer

Toxicol Lett· December 2008

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Metabolism and toxicological detection of the designer drug 4-chloro-2,5-dimethoxyamphetamine in rat urine using gas chromatography-mass spectrometry.
Andreas H Ewald, Dorothea Ehlers, Hans H Maurer

Anal Bioanal Chem· April 2008

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Designer drug 2,5-dimethoxy-4-methyl-amphetamine (DOM, STP): involvement of the cytochrome P450 isoenzymes in formation of its main metabolite and detection of the latter in rat urine as proof of a drug intake using gas chromatography-mass spectrometry.
Andreas H Ewald, Michael Puetz, Hans H Maurer

J Chromatogr B Analyt Technol Biomed Life Sci· February 2008

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Metabolism and toxicological detection of the designer drug 4-iodo-2,5-dimethoxy-amphetamine (DOI) in rat urine using gas chromatography-mass spectrometry.
Andreas H Ewald, Giselher Fritschi, Hans H Maurer

J Chromatogr B Analyt Technol Biomed Life Sci· September 2007

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Designer drug 2,4,5-trimethoxyamphetamine (TMA-2): studies on its metabolism and toxicological detection in rat urine using gas chromatographic/mass spectrometric techniques.
Andreas H Ewald, Giselher Fritschi, Hans H Maurer

J Mass Spectrom· September 2006

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Designer drugs 2,5-dimethoxy-4-bromo-amphetamine (DOB) and 2,5-dimethoxy-4-bromo-methamphetamine (MDOB): studies on their metabolism and toxicological detection in rat urine using gas chromatographic/mass spectrometric techniques.
Andreas H Ewald, Giselher Fritschi, Wolf-Rainer Bork, Hans H Maurer

J Mass Spectrom· April 2006

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Studies on the metabolism and toxicological detection of the designer drug 4-methylthioamphetamine (4-MTA) in human urine using gas chromatography-mass spectrometry.
Andreas H Ewald, Frank T Peters, Magdalene Weise, Hans H Maurer

J Chromatogr B Analyt Technol Biomed Life Sci· September 2005

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