This study described the simultaneous direct determination of glyphosate and AMPA in oat flour by IC-MS. Glyphosate and AMPA can be determined sensitively and accurately using a Dionex IonPac AS19-4 μm column and ISQ EC single quadrupole mass spectrometer. The Reagent-Free ion chromatography system provides excellent reproducibility, thereby yielding greater quantification accuracy and consistently reliable results.
This work aimed to develop and validate an analytical method for simultaneous screening and quantification of pesticide residues in potato by using the QuEChERS extraction method in combination with the Thermo Scientific™ Exactive™ GC Orbitrap™ GC-MS system operated in full scan mode. The data acquisition and processing were carried out by using Thermo Scientific™ TraceFinder™ software. The optimized method was validated as per the SANTE/12682/2019 guidelines.
An AcquireX workflow implemented on the Orbitrap ID-X Tribrid mass spectrometer was evaluated for the analysis of 250 pesticides spiked into strawberry matrix to demonstrate the efficiency of the workflow for identifying the pesticides spiked at different levels. Detection and identification were determined by matching experimentally acquired MS and MS/MS data to validated spectral libraries. The efficiency of the AcquireX workflow was evaluated against a standard data-dependent acquisition and dynamic exclusion method that did not utilize an exclusion list.
Optimization and validation of a multi-residue LC-MS/MS method for pesticides in spinach and cabbage by using Thermo Scientific Vanquish UHPLC and TSQ Quantis mass spectrometer. Sample preparation was performed using QuEChERS method that provided high recoveries for an extensive scope of pesticides in several simple steps. Data acquisition and processing were carried out using Thermo Scientific TraceFinder software. The optimized method was validated as per the SANTE guideline and applied to real samples demonstrating that the workflow is fit for purpose.
Multi-residue instrumental method that can be applied for high-throughput quantitation of pesticide residues in garlic and cumin at or below the current legislative requirements. The Thermo Scientific Orbitrap Exploris 120 mass spectrometer was operated in two different workflows: using full-scan Data-Independent Acquisition for quantitation and confirmation and using Thermo Scientific AcquireX intelligent data acquisition background exclusion workflow for full spectrum filtering, retrospective analysis, and multi-parameter-based compound identification.
