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The fabrication of carboxylic acid-functionalized porous layer open tube column and its application in hydrophilic interaction chromatography for small polar molecules
Journal of Liquid Chromatography & Related Technologies ( IF 1.3 ) Pub Date : 2020-11-27 , DOI: 10.1080/10826076.2020.1848864
Shiyun Tang 1 , Yuanxing Duan 1 , Feng Chang 2 , Wei Jiang 1 , Fengmei Zhang 1 , Zhihua Liu 1 , Yuting Yang 1 , Chunbo Liu 1, 3 , Yingzhuang Chen 2
Affiliation  

Abstract The porous layer open-tube (PLOT) columns, which were characterized by their considerable specific surface area and high permeability, have attracted a growing attention from researchers in liquid chromatography. In this work, a hydrophilic PLOT column rich in carboxylic acid functional groups was successfully synthesized in capillary with an inner diameter of 200 µm by thermally initiated aqueous two-phase polymerization. Methacrylic acid (MAA) areas monomers that responsible for the introduction of polar functional groups, and poly(ethylene glycol) diacrylate (PEGDA) are as cross-linker. The optimized PLOT column has a uniform, moderately thick porous layer, which is tightly bonded to the inner wall without any detachment. The hollow structure gives the PLOT column good permeability, which facilitates fast mass transfer. The systematical evaluations of the resulting PLOT columns were performed by using polar analytes including nucleosides, bases, amides, phenols and carboxylic acids. Those results demonstrated excellent separation performance for the small polar molecules. Compared to the poly(PEGDA) PLOT column, the hydrophilic retention of analytes on poly(PEGDA-co-MAA) porous layer open-tube column is significantly improved by the introduction of carboxylic acids. Furthermore, with modified nucleosides and chlorophenols being disease markers and the persistent pollutant of wide concern, respectively, the separation was optimized and the linear range of the quantitative analysis was examined for both targets. which indicates the potential application of such PLOT column for analysis of real samples. Graphical abstract

中文翻译:

羧酸功能化多孔层开管柱的制备及其在极性小分子亲水相互作用色谱中的应用

摘要 多孔层开管(PLOT)色谱柱以其相当大的比表面积和高渗透性等特点,越来越受到液相色谱研究人员的关注。在这项工作中,通过热引发的水性两相聚合在毛细管中成功合成了富含羧酸官能团的亲水 PLOT 柱,内径为 200 µm。甲基丙烯酸 (MAA) 是负责引入极性官能团的单体,而聚乙二醇二丙烯酸酯 (PEGDA) 作为交联剂。优化后的 PLOT 柱具有均匀、中等厚度的多孔层,与内壁紧密结合,没有任何分离。中空结构赋予 PLOT 柱良好的渗透性,有利于快速传质。通过使用包括核苷、碱、酰胺、酚和羧酸在内的极性分析物对所得 PLOT 色谱柱进行系统评估。这些结果证明了小极性分子的优异分离性能。与聚 (PEGDA) PLOT 色谱柱相比,通过引入羧酸,分析物在聚 (PEGDA-co-MAA) 多孔层开管柱上的亲水保留得到显着改善。此外,修饰核苷和氯酚分别是疾病标志物和广受关注的持久性污染物,优化了分离,并检查了两个目标的定量分析的线性范围。这表明这种 PLOT 柱在实际样品分析中的潜在应用。图形概要 这些结果表明对小极性分子具有出色的分离性能。与聚 (PEGDA) PLOT 色谱柱相比,通过引入羧酸,分析物在聚 (PEGDA-co-MAA) 多孔层开管柱上的亲水保留得到显着改善。此外,修饰核苷和氯酚分别是疾病标志物和广受关注的持久性污染物,优化了分离,并检查了两个目标的定量分析的线性范围。这表明这种 PLOT 柱在实际样品分析中的潜在应用。图形概要 这些结果证明了小极性分子的优异分离性能。与聚 (PEGDA) PLOT 色谱柱相比,通过引入羧酸,分析物在聚 (PEGDA-co-MAA) 多孔层开管柱上的亲水保留得到显着改善。此外,修饰核苷和氯酚分别是疾病标志物和广受关注的持久性污染物,优化了分离,并检查了两个目标的定量分析的线性范围。这表明这种 PLOT 柱在实际样品分析中的潜在应用。图形概要 通过引入羧酸,分析物在聚(PEGDA-co-MAA)多孔层开管柱上的亲水保留得到显着改善。此外,修饰核苷和氯酚分别是疾病标志物和广受关注的持久性污染物,优化了分离,并检查了两个目标的定量分析的线性范围。这表明这种 PLOT 柱在实际样品分析中的潜在应用。图形概要 通过引入羧酸,分析物在聚(PEGDA-co-MAA)多孔层开管柱上的亲水保留得到显着改善。此外,修饰核苷和氯酚分别是疾病标志物和广受关注的持久性污染物,优化了分离,并检查了两个目标的定量分析的线性范围。这表明这种 PLOT 柱在实际样品分析中的潜在应用。图形概要 这表明这种 PLOT 柱在实际样品分析中的潜在应用。图形概要 这表明这种 PLOT 柱在实际样品分析中的潜在应用。图形概要
更新日期:2020-11-27
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