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The Extraction of Diquat and Paraquat for EPA Method 549.2 using the SmartPrep Automated Cartridge Extractor
29 May 2013Diquat and paraquat are some of the most widely used and available herbicides in the world. They are fast-acting, non-selective quaternary amines used mainly in the agricultural industries to control the penetration of invasive plants and crop yield. Both diquat and paraquat are toxic to humans upon exposure, thus their levels must be carefully controlled. This application note from Horizon Technology outlines a method for the extraction of diquat and paraquat from water samples using the SmartPrep Automated Solid Phase Cartridge Extractor.
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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.Environmental Monitoring and TestingEnvironmental monitoring and testing uses handheld portable analyzers, kits, spectrometers or chromatography systems for air, water, soil, food and other sample testing. Useful features of analyzers such as BOD and COD include portability, easy calibration, automation and sensitivity. Environmental test kits for pH, water, moisture, etc, should be accurate, sensitive, reliable, fast and easy to use.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.EPA MethodsEPA methods are procedures approved by the U.S. Environmental Protection Agency for monitoring and analyzing environmental pollutants, including air, water, and soil samples. These methods are critical in ensuring public health and environmental safety. Explore EPA methods and tools in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.AgricultureAgriculture research focuses on improving food production, crop management, and sustainability. This includes plant breeding, pest control, and soil health studies. Explore agriculture research tools in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.HerbicidesEnvironmental ContaminationContaminants in the environment are harmful chemicals that are present in the air, land and water. These include pesticides, pharmaceuticals, persistent organic pollutants (POPs) and many more.Diquat