Andreas H. Ewald

631 total citations
22 papers, 508 citations indexed

About

Andreas H. Ewald is a scholar working on Toxicology, Pharmacology and Cellular and Molecular Neuroscience. According to data from OpenAlex, Andreas H. Ewald has authored 22 papers receiving a total of 508 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Toxicology, 7 papers in Pharmacology and 7 papers in Cellular and Molecular Neuroscience. Recurrent topics in Andreas H. Ewald's work include Forensic Toxicology and Drug Analysis (18 papers), Cannabis and Cannabinoid Research (7 papers) and Neurotransmitter Receptor Influence on Behavior (6 papers). Andreas H. Ewald is often cited by papers focused on Forensic Toxicology and Drug Analysis (18 papers), Cannabis and Cannabinoid Research (7 papers) and Neurotransmitter Receptor Influence on Behavior (6 papers). Andreas H. Ewald collaborates with scholars based in Germany. Andreas H. Ewald's co-authors include Hans H. Maurer, Nadine Schaefer, Péter Schmidt, Peter H. Schmidt, Giselher Fritschi, Frank T. Peters, Michael D. Menger, Matthias W. Laschke, Mattias Kettner and Dorothea Ehlers and has published in prestigious journals such as Analytical and Bioanalytical Chemistry, Toxicology Letters and Journal of Chromatography B.

In The Last Decade

Andreas H. Ewald

22 papers receiving 499 citations

Peers

Countries citing papers authored by Andreas H. Ewald

Since Specialization

Citations

This map shows the geographic impact of Andreas H. Ewald's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Andreas H. Ewald with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Andreas H. Ewald more than expected).

Fields of papers citing papers by Andreas H. Ewald

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Andreas H. Ewald. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Andreas H. Ewald. The network helps show where Andreas H. Ewald may publish in the future.

Co-authorship network of co-authors of Andreas H. Ewald

This figure shows the co-authorship network connecting the top 25 collaborators of Andreas H. Ewald. A scholar is included among the top collaborators of Andreas H. Ewald based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Andreas H. Ewald. Andreas H. Ewald is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Pharmacokinetics of (synthetic) cannabinoids in pigs and their relevance for clinical and forensic toxicology 2016 ·Toxicology Letters ·Nadine Schaefer, Jan‐Georg Wojtyniak, Mattias Kettner, (unknown), Matthias W. Laschke, Andreas H. Ewald, Thorsten Lehr, Michael D. Menger, Hans H. Maurer, Peter H. Schmidt	34
2	Distribution of Synthetic Cannabinoids JWH-210, RCS-4 and Δ 9-Tetrahydrocannabinol After Intravenous Administration to Pigs 2016 ·Current Neuropharmacology ·Nadine Schaefer, Mattias Kettner, Matthias W. Laschke, (unknown), Andreas H. Ewald, Michael D. Menger, Hans H. Maurer, Peter H. Schmidt	26
3	Metabolic patterns of JWH‐210, RCS‐4, and THC in pig urine elucidated using LC‐HR‐MS/MS: Do they reflect patterns in humans? 2016 ·Drug Testing and Analysis ·Nadine Schaefer, Andreas G. Helfer, Mattias Kettner, Matthias W. Laschke, (unknown), Andreas H. Ewald, Markus R. Meyer, Michael D. Menger, Hans H. Maurer, Peter H. Schmidt	11
4	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 2015 ·Analytical and Bioanalytical Chemistry ·Nadine Schaefer, Mattias Kettner, Matthias W. Laschke, (unknown), (unknown), (unknown), Michael D. Menger, Hans H. Maurer, Andreas H. Ewald, Peter H. Schmidt	23
5	Development and validation of a multi‐analyte LC‐MS/MS approach for quantification of neuroleptics in whole blood, plasma, and serum 2015 ·Drug Testing and Analysis ·(unknown), (unknown), Hans H. Maurer, Péter Schmidt, Andreas H. Ewald	20
6	Can JWH‐210 and JWH‐122 be detected in adipose tissue four weeks after single oral drug administration to rats? 2014 ·Biomedical Chromatography ·Nadine Schaefer, (unknown), (unknown), Hans H. Maurer, Peter H. Schmidt, Andreas H. Ewald	7
7	Quantification of 33 antidepressants by LC-MS/MS—comparative validation in whole blood, plasma, and serum 2014 ·Analytical and Bioanalytical Chemistry ·(unknown), (unknown), (unknown), Hans H. Maurer, Peter H. Schmidt, Andreas H. Ewald	33
8	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 2013 ·Analytical and Bioanalytical Chemistry ·(unknown), (unknown), Hans H. Maurer, Péter Schmidt, Andreas H. Ewald	33
9	A fatal case involving several synthetic cannabinoids 2013 ·Nadine Schaefer, (unknown), (unknown), Stefan Kneisel, Volker Auwärter, Peter H. Schmidt, Andreas H. Ewald	39
10	Towards a universal LC–MS screening procedure – can an LIT LC–MSⁿ screening approach and reference library be used on a quadrupole‐LIT hybrid instrument? 2012 ·Journal of Mass Spectrometry ·Dirk K. Wissenbach, Markus R. Meyer, Armin Weber, Daniela Remane, Andreas H. Ewald, Frank T. Peters, Hans H. Maurer	29
11	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 2012 ·Analytical and Bioanalytical Chemistry ·Nadine Schaefer, (unknown), Péter Schmidt, Andreas H. Ewald	33
12	A fatal complication of doxylamine in a 1-year-old girl 2011 ·International Journal of Legal Medicine ·Elisabeth E. Türk, Andreas H. Ewald	5
13	Metabolism and toxicological detection of the designer drug 4-chloro-2,5-dimethoxyamphetamine in rat urine using gas chromatography-mass spectrometry 2008 ·Analytical and Bioanalytical Chemistry ·Andreas H. Ewald, Dorothea Ehlers, Hans H. Maurer	28
14	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 2008 ·Toxicology Letters ·Andreas H. Ewald, Hans H. Maurer	19
15	Metabolism and toxicological detection of the designer drug 4-iodo-2,5-dimethoxy-amphetamine (DOI) in rat urine using gas chromatography–mass spectrometry 2007 ·Journal of Chromatography B ·Andreas H. Ewald, Giselher Fritschi, Hans H. Maurer	19
16	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 2007 ·Journal of Chromatography B ·Andreas H. Ewald, (unknown), Hans H. Maurer	13
17	Designer drug 2,4,5‐trimethoxyamphetamine (TMA‐2): Studies on its metabolism and toxicological detection in rat urine using gas chromatographic/mass spectrometric techniques 2006 ·Journal of Mass Spectrometry ·Andreas H. Ewald, Giselher Fritschi, Hans H. Maurer	19
18	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 2006 ·Journal of Mass Spectrometry ·Andreas H. Ewald, Giselher Fritschi, (unknown), Hans H. Maurer	37
19	Studies on the metabolism and toxicological detection of the designer drug 4-methylthioamphetamine (4-MTA) in human urine using gas chromatography–mass spectrometry 2005 ·Journal of Chromatography B ·Andreas H. Ewald, Frank T. Peters, (unknown), Hans H. Maurer	37
20	Colchicine Poisoning after Mix-up of Ramsons ( Allium ursinum L.) and Meadow Saffron ( Colchicum autumnale L.) 2004 ·Frank T. Peters, Jochen Beyer, Andreas H. Ewald, Hans H. Maurer	4

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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