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Mirjam Widmer

Observed names: M W Widmer, M. Widmer, M. Widmer (Deceased), Miryam Widmer, Widmer, Mirjam
Institution: Kanton Zürich
ORCID: 0000-0003-3050-2506
Observed ORCID: 0000-0003-3050-2506
OpenAlex ID: A5033633854
Quantitative multiresidue method for about 100 veterinary drugs in different meat matrices by sub 2-μm particulate high-performance liquid chromatography coupled to time of flight mass spectrometry
2008 · Anton Kaufmann, Patrick Butcher, et al. · Journal of Chromatography A · 193
Comprehensive comparison of liquid chromatography selectivity as provided by two types of liquid chromatography detectors (high resolution mass spectrometry and tandem mass spectrometry): “Where is the crossover point?”
2010 · A. Kaufmann, P. Butcher, et al. · Analytica Chimica Acta · 188
Development of an improved high resolution mass spectrometry based multi-residue method for veterinary drugs in various food matrices
2010 · A. Kaufmann, P. Butcher, et al. · Analytica Chimica Acta · 153
Ultra-performance liquid chromatography coupled to time of flight mass spectrometry (UPLC–TOF): A novel tool for multiresidue screening of veterinary drugs in urine
2006 · Anton Kaufmann, Patrick Butcher, et al. · Analytica Chimica Acta · 137
Quantitative LC/MS-MS Determination of Sulfonamides and Some Other Antibiotics in Honey
2002 · Anton Kaufmann, Sven Roth, et al. · Journal of AOAC International · 92
Are liquid chromatography/electrospray tandem quadrupole fragmentation ratios unequivocal confirmation criteria?
2009 · Anton Kaufmann, Patrick Butcher, et al. · Rapid Communications in Mass Spectrometry · 86
Quantification of anthelmintic drug residues in milk and muscle tissues by liquid chromatography coupled to Orbitrap and liquid chromatography coupled to tandem mass spectrometry
2011 · A. Kaufmann, P. Butcher, et al. · Talanta · 71
Multi-residue quantification of veterinary drugs in milk with a novel extraction and cleanup technique: Salting out supported liquid extraction (SOSLE)
2014 · A. Kaufmann, P. Butcher, et al. · Analytica Chimica Acta · 61
Post‐interface signal suppression, a phenomenon observed in a single‐stage Orbitrap mass spectrometer coupled to an electrospray interfaced liquid chromatograph
2010 · A. Kaufmann, M. Widmer, et al. · Rapid Communications in Mass Spectrometry · 58
Quantitative analysis of polypeptide antibiotic residues in a variety of food matrices by liquid chromatography coupled to tandem mass spectrometry
2013 · A. Kaufmann, M. Widmer · Analytica Chimica Acta · 55
Reliability of veterinary drug residue confirmation: High resolution mass spectrometry versus tandem mass spectrometry
2014 · A. Kaufmann, P. Butcher, et al. · Analytica Chimica Acta · 52
Novel Instrumentation for Real-Time Monitoring Using Miniaturized Flow Systems with Integrated Biosensors
1997 · R Freaney, A McShane, et al. · Annals of Clinical Biochemistry International Journal of Laboratory Medicine · 48
Simplifying Nontargeted Analysis of PFAS in Complex Food Matrixes
2022 · Anton Kaufmann, Patrick Butcher, et al. · Journal of AOAC International · 43
Study of High-Resolution Mass Spectrometry Technology as a Replacement for Tandem Mass Spectrometry in the Field of Quantitative Pesticide Residue Analysis
2012 · Anton Kaufmann, Veronika Dvorak, et al. · Journal of AOAC International · 42
Chemical Ionization of TNT and RDX with Trimethylsilyl Cation
1997 · Kevin C. Crellin, M. Widmer, et al. · Analytical Chemistry · 29
Improving the QuEChERS Liquid/Liquid Extraction of Analytes With Widely Varying Physicochemical Properties: Example of 201 Veterinary Drugs in Milk
2022 · Anton Kaufmann, Patrick Butcher, et al. · Journal of AOAC International · 27
Using In Silico Fragmentation to Improve Routine Residue Screening in Complex Matrices
2017 · Anton Kaufmann, Patrick Butcher, et al. · Journal of the American Society for Mass Spectrometry · 27
Does the ion mobility resolving power as provided by commercially available ion mobility quadrupole time-of-flight mass spectrometry instruments permit the unambiguous identification of small molecules in complex matrices?
2020 · A. Kaufmann, P. Butcher, et al. · Analytica Chimica Acta · 24
Analysis of a variety of inorganic and organic additives in food products by ion-pairing liquid chromatography coupled to high-resolution mass spectrometry
2018 · Anton Kaufmann, Mirjam Widmer, et al. · Analytical and Bioanalytical Chemistry · 18
Practical application of in silico fragmentation based residue screening with ion mobility high‐resolution mass spectrometry
2017 · Anton Kaufmann, Patrick Butcher, et al. · Rapid Communications in Mass Spectrometry · 18
Assessment and validation of the p-QuEChERS sample preparation methodology for the analysis of >200 veterinary drugs in various animal-based food matrices
2023 · Anton Kaufmann, Patrick Butcher, et al. · Food Additives & Contaminants Part A · 17
Improved method robustness and ruggedness in liquid chromatography–mass spectrometry by increasing the acid content of the mobile phase
2024 · Anton Kaufmann, Patrick Butcher, et al. · Journal of Chromatography A · 12
High resolution mass spectrometry-based detection and quantification of β-agonists at relevant trace levels in a variety of animal-based food matrices
2021 · Anton Kaufmann, Mirjam Widmer, et al. · Food Additives & Contaminants Part A · 12
Determination of Corticosteroids, Anabolic Steroids, and Basic Nonsteroidal Anti-Inflammatory Drugs in Milk and Animal Tissues
2014 · Anton Kaufmann, Patrick Butcher, et al. · Journal of AOAC International · 12
Optimized multimatrix calibration concept for liquid chromatography mass spectrometry-based bioanalysis methods
2020 · A. Kaufmann, P. Butcher, et al. · Journal of Chromatography B · 2
Works count: 27
Citation count: 1,477
H-index: 18
I10-index: 24
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