David Morse
Ontario Ministry of the Environment
8 Papers
2 Citations
David Morse is an academic researcher from Ontario Ministry of the Environment. The author has contributed to research in topics: Liquid chromatography–mass spectrometry & Selected reaction monitoring. The author has an hindex of 6, co-authored 8 publications.
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Papers
Direct aqueous determination of glyphosate and related compounds by liquid chromatography/tandem mass spectrometry using reversed-phase and weak anion-exchange mixed-mode column.
TL;DR: A novel liquid chromatography/tandem mass spectrometry (LC/MS-MS) method has been developed for the determination of glyphosate, aminomethylphosphonic acid (AMPA) and glufosinate using a reversed-phase and weak anion-exchange mixed-mode Acclaim® WAX-1 column and linearity of the detector response with a minimum coefficient of determination was demonstrated.
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A routine accredited method for the analysis of polychlorinated biphenyls, organochlorine pesticides, chlorobenzenes and screening of other halogenated organics in soil, sediment and sludge by GCxGC-μECD
Alina M. Muscalu,Alina M. Muscalu,Eric J. Reiner,Steven N. Liss,Tony Chen,Gerry Ladwig,David Morse +6 more
TL;DR: Comprehensive two-dimensional gas chromatography coupled with micro-electron capture detector (μECD) is a new method that can analyze polychlorinated biphenyls (PCBs), organochlorine pesticides (OCs) and chlorobenzenes (CBz) in a single analytical run with enhanced selectivity and sensitivity over single column methods.
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Optimized liquid chromatography tandem mass spectrometry approach for the determination of diquat and paraquat herbicides
TL;DR: This study evaluated the most sensitive MRM transitions from three types of quasi-molecular ions of DQ and PQ, elucidated the cross-interference phenomena, and demonstrated that the rarely mentioned MRM transitioned from dications M(2+) offered the best selectivity for LC-MS/MS analysis.
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Liquid chromatography/tandem mass spectrometry analysis of neonicotinoids in environmental water.
TL;DR: The method developed for neonicotinoid pesticide analysis is very sensitive and efficient and provides good flexibility to meet various environmental monitoring needs and is employed for an extensive study to determine the distribution of NNIs in Ontario's water.
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