微固相提取中的多孔聚合物吸附剂:应用,优势和挑战
Sayyed Hossein Hashemi1, Massoud Kaykhaii2
1Department of Marine Chemistry, Faculty of Marine Science, Chabahar Maritime University, P.O. Box 98617-85553, Chabahar, Iran. h_hashemi_85@yahoo.com.
Topics in current chemistry (Cham)
|November 18, 2024
概括
多孔聚合物增强微固体相提取 (μSPE) 以提高选择性和效率. 未来的研究重点是为更绿色的分析化学开发具有成本效益,可持续和自动化的μSPE吸附剂.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 多孔聚合物作为微固相提取 (μSPE) 中的选择性吸附剂越来越重要.
- 诸如分子印制聚合物 (MIP),石墨烯氧化物框架和热性意达框架 (ZIF) 等创新材料正在推进μSPE技术.
- 这些材料提供了增强的提取效率,选择性和减少溶剂使用,与绿色化学原则保持一致.
研究的目的:
- 在μSPE中审查各种多孔聚合物吸附剂的制备和应用.
- 要突出这些吸附剂对改善μSPE方法性能的影响.
- 分析分析化学中的多孔聚合物吸附剂的优点,局限性和未来方向.
主要方法:
- 关于孔聚合物合成和μSPE的表征的文献综述.
- 对不同的多孔聚合物类型进行批判性分析,包括MIP,石墨烯氧化物框架和ZIF.
- 基于报告的效率和选择性,评估它们在μSPE应用中的性能.
主要成果:
- 对复杂矩阵来说,MIP显示了高的目标特异性.
- 石墨烯氧化物框架和ZIF为各种应用提供高表面积和稳定性.
- 多孔聚合物显著提高了提取效率,选择性,并减少了μSPE中的溶剂消耗.
结论:
- 多孔聚合物对于通过高效和绿色的μSPE来推进分析化学至关重要.
- 挑战包括成本,可重复使用性和自动化;未来的工作应该解决这些问题.
- 开发具有成本效益,可持续性和可扩展性的多孔聚合物吸附剂对于未来的μSPE进步至关重要.
相关概念视频
01:08Size-Exclusion Chromatography
506
In size-exclusion chromatography (SEC), also known as molecular-exclusion or gel-permeation chromatography, molecules are separated based on their sizes. This technique is important for separating large molecules such as polymers and biomolecules. The two classes of micron-sized stationary phases encountered in SEC are silica particles and cross-linked polymer resin beads. Both materials are porous, but their pore sizes vary significantly.
Silica particles offer advantages such as rigidity,...
Silica particles offer advantages such as rigidity,...
506
01:09Analyte Adsorption and Distribution
608
In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...
608
01:17Gas Chromatography: Types of Columns and Stationary Phases
514
Gas chromatography (GC) relies on stationary phases to separate and analyze components in a sample. There are two main types of stationary phases: liquid and solid. Liquid stationary phases are non-volatile, thermally stable, and chemically inert liquids coated onto the column. Solid stationary phases are particles of adsorbent material, such as silica gel or molecular sieves.
For an analyte to remain on the column for a sufficient amount of time, it must exhibit some level of compatibility (or...
For an analyte to remain on the column for a sufficient amount of time, it must exhibit some level of compatibility (or...
514
01:17Ion Exchange
555
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
555
01:11High-Performance Liquid Chromatography: Introduction
1.5K
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
In HPLC, two phases play a critical role in the separation process:
1.5K
01:10Silica Gel Column Chromatography: Overview
1.0K
Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
1.0K