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.
A robust, sensitive, and reliable multi-residue LC-MS/MS method workflow solution that uses the Thermo Scientific TSQ Altis triple quadrupole mass spectrometer provides analysis and quantitation of more than 160 veterinary drugs with the Thermo Scientific VetDrugs Explorer Collection solution in salmon (fillet), bovine muscle, and milk. The complete instrument and data processing method including SRM settings is included with the VetDrugs Explorer Collection start-to-finish workflow solution. In 17 minutes, the target veterinary drugs were detected and quantified in food matrices.
As agricultural trade grows and food safety concerns mount, stricter pesticide regulations are being enforced around the world. Increased pesticide testing and reductions in maximum permissible residue levels have driven demand for fast, sensitive and cost-effective analytical methods for high-throughput screening of multi-class pesticides in food. Detection of 510 pesticides at low ppb levels was achieved within 12 minutes using the Thermo Scientific Exactive benchtop LC/MS system powered by Orbitrap technology.
Forty-four multi-class veterinary drugs of known concentrations were employed to demonstrate how the use of a generic variable data-independent acquisition (vDIA) method with wide MS/MS precursor isolation windows achieves sensitivity and selectivity comparable to data-dependent MS2 acquisition (using narrow isolation windows) in quantitative and qualitative small molecule applications. In addition, a full record of MS and MS/MS data for the measured sample fit for non-targeted and unknown screening purposes is delivered. vDIA is not available in the United States of America
We describe a method to analyze large numbers of pesticides in a single run on a triple quadrupole mass spectrometer using TraceFinder software with built-in workflows for streamlining method development and routine analysis.
