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Stereoselective Separation of Triazole Fungicides Using the ACQUITY UPC2 System and ACQUITY UPC2 Trefoil Chiral Columns

Stereoselective Separation of Triazole Fungicides Using the ACQUITY UPC2 System and ACQUITY UPC2 Trefoil Chiral Columns

3 Aug 2015

The development of analytical methods for the separation of chiral compounds is important in many areas of research, as it is well known that different enantiomers are selectively biologically active. It is estimated that 20 to 30% of pesticides on the market today have optical isomers, and there are reports that 40% of the pesticides used in China are chiral. This application note presents the enantiomeric and/or diastereomeric resolutions of 12 triazole fungicides using Waters® Trefoil Column Technology.

ACQUITY UPC2 Trefoil and Torus Columns

Waters

ACQUITY UPC2 Column Technology for Chiral and Achiral Separations. ACQUITY UPC2 Trefoil™ 2.5 µm Columns are uniquely designed for the ACQUITY UPC2 System. Selectivity and speed for chiral separations Reduce method development time Based on modified polysaccharide-based stationary phases for broad-spectrum chiral selectivity. ACQUITY UPC2 Torus™ Columns simplify the method development process with four completely new and innovative 1.7 µm chemistries for convergence chromatography. Excellent peak shape and robustness while reducing or eliminating the need for additives Four column chemistries provide added selectivity for a wide range of compounds Column Specifications: Technology: Torus, Trefoil Chemistry: 1-AA, 2-PIC, DEA, DIOL, AMY1, CEL1, CEL2 Particle Size: 1.7, 2.5 µm Pore Size: 130 Å Length: 50, 75, 100, 150 mm ID: 2.1, 3.0 mm

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ACQUITY UPC² System

Waters

Convergence Chromatography with the ACQUITY UPC² System Bring streamlined workflow, expanded selectivity, and an orthogonal technique to your laboratory. Convergence chromatography (CC) is a broad-based, complementary analytical platform that is taking its place alongside of LC and GC as one of the three essential separation technologies for modern laboratory analysis. This technique provides another, reliable choice as an analytical platform that is orthogonal to reversed-phase LC (RPLC), while significantly streamlining the entire analytical workflow. In convergence chromatography, the separation is achieved by manipulating the density and composition of a supercritical fluid-based mobile phase. Because of the very high diffusivity of the mobile phase, can be achieved. Additionally, the diversity of stationary phase and mobile phase (co-solvent) options provides access to the largest selectivity space available to any separation technique. The ACQUITY UPC² System is a holistically designed UltraPerformance Convergence Chromatography (UPC²) system that utilizes liquid CO2 as the primary mobile phase. The system leverages the chromatographic principles and selectivity of normal-phase chromatography while providing the ease-of-use of RPLC, enabling you to address routine and complex separations challenges. ACQUITY UPC² System: Discover what's been missing from your analytical toolbox With the ACQUITY UPC² System, scientists can now separate, analyze, and understand compounds that have challenged all other LC and GC technologies including: Hydrophobic and chiral compounds Lipids Thermally-labile samples Polymers It's also the perfect complement to MS due to its low solvent load and high resolution, narrow peaks and fast separations. ACQUITY UPC² System Features: Compressed carbon dioxide (CO2), the primary mobile phase, is less costly and less toxic than liquid mobile phases or carrier gases. Variable volume injection delivers 0.5 µL to 10 µL as well as the ability to match column and injection volume with minimal sample loss and need to change loops. Higher throughput and productivity allows you to analyze more samples per day with faster re-equilibration of columns and shorter cycle times, increasing laboratory productivity. Co-solvent and column switching provides flexibility in method development for faster solvent screening and faster column screening.

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UHPLC and HPLCHigh performance liquid chromatography (HPLC) and ultra high performance liquid chromatography (UHPLC), also known as UPLC, are analytical techniques used to separate, identify and quantitate components of complex mixtures including biological samples such as proteins and lipids as well as chemical mixtures of pesticides, drugs and oils. Both techniques are liquid chromatographic methods but differ by operating pressures (HPLC < 6000 psi < UHPLC ). Components of HPLC and UHPLC systems include columns, detectors, pumps, autosamplers and column heaters. Explore a range of UHPLC and HPLC columns for your specific sample needs including reverse phase, normal phase, ion exchange, HILIC, ion exclusion and size exclusion columns. For more specialized HPLC, explore FPLC, countercurrent LC and simulated moving bed systems. Find the best UHPLC and HPLC equipment in our peer reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Supercritical Fluid ChromatographySupercritical Fluid Chromatography (SFC) is used for the rapid separation and analysis of complex mixtures. SFC systems require injectors, pumps, columns, ovens and detectors. The SFC retention method uses a supercritical fluid, usually CO2. There are a number of different SFC detector types including UV / VIs, ECD, mass spectrometry and fluorescence.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.Chiral CompoundsPesticidesPesticides 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. SFCEnvironmental AnalysisEnvironmental analysis describes a variety of tests that determine the effect of chemicals, processes and particulates such as persistent organic pollutants (POPs) have on the environment.Fungicides