硼化合物及硼酸盐

Dionex BorateTrap 硼酸盐捕获柱 对于使用HPAE-PAD检测IC碳水化合物分析中最佳的性能，使用的Thermo Scientific戴安BorateTrap在线捕获柱除去硼酸盐污染。当放置洗脱液泵和注射阀，陷阱上的碳水化合物分析物的效率或保留时间没有影响之间。的戴安BorateTrap柱消除了甘露糖，果糖，以及从硼酸污染引起糖醇峰拖尾。 Dionex BorateTrap 硼酸盐捕获柱订货信息：Borate Trap Column047078 The BorateTrap™ is an in-line trap column, and is recommended for optimal performance during carbohydrate analysis.In-line trap column removes borate contamination for HPAE-PAD.Eliminates peak tailing for mannose, fructose, and sugar alcohols resulting from borate contamination. Borate contamination in eluents can cause a significant loss of peak efficiency, especially for mannose, fructose, and reduced monosaccharides. If borate is present in the eluent, it binds both to the anion-exchange column and to the carbohydrate analytes. The carbohydrate-borate complex is less efficiently eluted from the anion-exchanger than is the carbohydrate, resulting in peak tailing, particularly where vicinal cis hydroxyl groups are present,such as for mannose and sugar alcohols. The BorateTrap eliminates peak tailing for mannose, fructose, and reduced monosaccharides, resulting from contamination of the eluent from borate. Therefore, the BorateTrap is highly recommended for optimal performance during carbohydrate analysis.The BorateTrap is a 4 × 50 mm column placed between the eluent pump and the injection valve to remove borate contamination from eluents used for HPAE-PAD. Because it is placed before the injection valve, it has no effect on the efficiencies or retention times of the carbohydrate analytes. This column is packed with a 20-μm high-capacity resin that has high selectivity for borate. The resin used in the BorateTrap is functionalized with a polyol capable of complexing borate in the presence of hydroxide. Borate is a known contaminant in laboratory water supplies. In chromatography, borate contamination of HPLC eluents may be a result of degrading deionized water systems or as leachate from borosilicate glassware.Effect of Borate and the BorateTrap Column on Monosaccharide Peak Symmetry.Data SheetsCarboPac MA1 Column for Carbohydrate Alditol and Aldose Analysis Data SheetCarboPac PA1 and PA10 Columns for Mono- and Disaccharide Analysis Data SheetCarboPac PA20 Column Data SheetManualsBorateTrap Column ManualCarboPac MA1, PA1, PA10, and PA100 Analytical Columns ManualCarboPac PA20 Analytical Column ManualTechnical NotesTN 40: Glycoprotein Monosaccharide Analysis Using HPAE-PAD with Eluent Generation

硼酸盐缓冲液，100 mL

硼酸盐缓冲液，100 mL