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首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >Monodisperse pillar[5]arene-based polymeric sub-microsphere for on-line extraction coupling with high-performance liquid chromatography to determine antioxidants in the migration of food contact materials
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Monodisperse pillar[5]arene-based polymeric sub-microsphere for on-line extraction coupling with high-performance liquid chromatography to determine antioxidants in the migration of food contact materials

机译：单分散柱[5]基于芳烃的聚合物亚微微微球，用于在线提取耦合，高性能液相色谱法测定食品接触材料的迁移中的抗氧化剂

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The monodisperse pillar[5]arene-based polymeric sub-microsphere was prepared by polycondensation of hydroxylated pillar[5]arene and cyanuric chloride through a one-pot reaction in mild condition. The preparation was realized by a simple two-step temperature-programmed process without heating operation. The obtained polymeric sub-microsphere exhibited monodisperse and regular spherical structure with uniform particle size distribution of 220-320 nm accounting for 94%. The prominent adsorption capacity of the polymeric sub-microsphere for antioxidants was demonstrated and attributed to the synergistic effect of the cladding interaction with the n-electron rich cavity and hydrophilic interaction with terminal hydroxyl on pillar[5]arene. Then the pillar[5]arene sub-microsphere was packed into a microcolumn to realize effective on-line enrichment of antioxidants coupling with high-performance liquid chromatography (HPLC). The flow rate of extraction and desorption solvent, clean-up and desorption volume were assessed to optimize the method. The method showed wide linear ranges with R-2 greater than 0.9926, low limits of detection (0.030-0.20 mu g/L) and limits of quantification (0.10-0.67 mu g/L). The developed method was successfully applied to determine trace antioxidants in the migration of food contact materials with simulated solution, which demonstrated the promising potential of this method for practical analysis. Furthermore, the migration behavior of antioxidants from food packaging materials into different food matrix was also investigated. (C) 2020 Elsevier B.V. All rights reserved.
机译：通过羟基化柱[5]芳烃和氰尿氯通过温和条件的单罐反应，通过缩小透缩柱[5]基于氨基聚合物亚微球。通过简单的两步温度编程过程实现了制备，而无需加热操作。所得的聚合物亚微微微球显示出单分散和规则的球形结构，均匀粒度分布220-320nm占94％。对抗氧化剂的聚合物亚微球的显着吸附能力被证明并归因于覆层相互作用与N型电子富腔的协同效应和与柱的末端羟基的亲水性相互作用[5]芳烃。然后将柱[5]芳烃亚微球填充到微柱中，以实现抗氧化剂与高效液相色谱（HPLC）的有效在线富集。评估萃取和解吸溶剂，清理和解吸体积的流速以优化该方法。该方法显示宽线性范围，R-2大于0.9926，检测限限（0.030-0.20μg/ l）和定量限制（0.10-0.67μg/ l）。已成功应用开发的方法以确定具有模拟溶液的食品接触材料迁移中的痕量抗氧化剂，这表明了这种实际分析方法的有希望的潜力。此外，还研究了从食品包装材料到不同食物基质中的抗氧化剂的迁移行为。 （c）2020 Elsevier B.v.保留所有权利。

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