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Analysis of Pesticide Residues in Spinach using Phenomenex roQ™ QuEChERS AOAC Kits by LC/MS/MS and GC/MS
10 Oct 2012In this application note, the AOAC official method 2007.01 for pesticide residues in foods is described for the analysis of 18 peptides and 2 internal standards from spinach using a Phenomenex roQ QuEChERS extraction kit and a PSA/GCB dSPE kit for sample preparation. Analysis was performed by LC/MS/MS and GC/MS. The roQ PSA/GCB dSPE kit was able to quickly remove pigment and other matrix interferences from the difficult spinach sample. Recoveries of all 18 pesticides were between 70% and 120% with sample-to-sample variation of <15%. Such results demonstrate the effectiveness of the roQ QuEChERS product for food analysis.
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Sample PreparationSample preparation can improve the quality and speed of separation techniques. Products to assist sample preparation include filtration equipment, evaporators, membranes and sieves.LC-MSLC-MS (liquid chromatography-mass spectrometry) systems and equipment are used for separation and quantitative analysis of complex mixtures, combining liquid chromatography and mass spectrometry. Quantify proteins, contaminants, pesticides or screen for drug metabolites with a high level of sensitivity. LC-MS systems and equipment include reverse phase, normal phase and specialized columns integrated with various MS detectors such as time-of-flight (TOF), quadrupole, orbitrap or ion trap mass analyzers. LC-MS/MS instruments equipped with a qTOF or triple quadrupole analyzer give greater sensitivity and resolving power to your analysis. Find the best LC-MS equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.GC-MS GC-MS (gas chromatography-mass spectrometry) instruments and equipment are used to separate, quantify and identify mixtures of small and volatile compounds, such as polycyclic aromatics, fatty acids and alcohols. Often used in drug detection, forensic investigation and environmental analysis for pesticides and contaminants, GC-MS is a powerful addition to your lab’s analytical capabilities. GC-MS/MS instruments equipped with a qTOF or triple quadrupole analyzers can give greater sensitivity and resolution to your analysis. Find the best GC-MS instruments and equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.QuEChERSThe QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) method is a streamlined approach that is used to extract multi-residue target compounds from food samples. It is most commonly used by analytical chemists studying pesticide residues in food.