ResourceSeparations
Simple Analysis of Pesticides Using AOC-MEPS System
19 Apr 2017MEPS (microextraction by packed sorbent), a solid phase microextraction system developed by SGE, consists of a solid-phase extraction cartridge that is integrated in a syringe needle. Analytes of interest can be trapped on the solid phase by simply aspirating the sample, and can accommodate volumes ranging from microliters to milliliters. The analytes that are bound to the sorbent material in the cartridge are dissolved by aspirating elution solvent (volumes from as little as a few to hundreds of microliters), and then injecting directly into the GC or GC/MS for analysis. In this application note, Shimadzu introduces examples of analysis of pesticide residues in crude food extracts and in water using the AOC-MEPS system.
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Solid-Phase ExtractionSolid-phase extraction (SPE) is used for clean-up, extraction and concentration of semi-volatile or non-volatile analytes from complex mixtures including blood, urine and food samples. Multiple formats are available for conducting SPE, including prepacked SPE cartridges, disks and microplates, as well as SPE sorbent powders for manual packing. SPE systems can be used to automate the process and extract multiple samples at once. Solid-phase microextraction (SPME) and supported liquid extraction (SLE) products are also available in the same formats. Find the best SPE, SLE and SPME equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.PesticidesPesticides are used to protect crops from diseases, pests and unwanted plants. They are classed as persistent organic pollutants (POPs) and can be harmful to humans. The Environmental Protection Agency (EPA) currently regulates the use of pesticides in the USA. Food SafetyFood safety describes the prevention of food-borne illnesses. Contamination with a variety of pathogens can be prevented with adequate temperature control, hygiene and labeling. Food samples can be tested using GC/MS, HPLC, SPE, and qPCR to ensure their adherence to regulations.Food FraudFood adulteration refers to food when it has been has been altered unlawfully with the addition of another lower commodity food product to increase quantity. The 2013 European horsemeat scandal saw the adulteration of beef products with the addition of horse meat.

