Stephan Walker

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?”

Anton Kaufmann, Patrick Butcher, Kathryn Maden et al. · Analytica Chimica Acta · 2010 · 184 citations

Medicine, Mass Spectrometry, Liquid Chromatography Selectivity +9

Development of an improved high resolution mass spectrometry based multi-residue method for veterinary drugs in various food matrices

Anton Kaufmann, Patrick Butcher, K. Maden et al. · Analytica Chimica Acta · 2010 · 144 citations

Food Forensics, Biochemistry, Gas Chromatography +11

Determination of nitrofuran and chloramphenicol residues by high resolution mass spectrometry versus tandem quadrupole mass spectrometry

Anton Kaufmann, Patrick Butcher, K. Maden et al. · Analytica Chimica Acta · 2014 · 110 citations

Environmental Chemistry, Engineering, Biochemistry +12

Quantitative and confirmative performance of liquid chromatography coupled to high‐resolution mass spectrometry compared to tandem mass spectrometry

Anton Kaufmann, Patrick Butcher, Kathryn Maden et al. · Rapid Communications in Mass Spectrometry · 2011 · 100 citations

Biological Mass Spectrometry, Gas Chromatography, Tandem Mass Spectrometry +19

Stable-Isotope Labeled Hydrophobic Hydrazide Reagents for the Relative Quantification of N-Linked Glycans by Electrospray Ionization Mass Spectrometry

Stephan Walker, Januka Budhathoki-Uprety, Bruce M. Novak et al. · Analytical Chemistry · 2011 · 92 citations · Full text