灵活的丝绕策略,以准备COF@多离子液涂纤维,以非选择性排除在电增强固相微提取中的大分子
Jingyi Wang1, Wenmin Zhang2, Qingqing Ding1
1Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Province Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China.
Analytica chimica acta
|May 1, 2024
概括
我们开发了一种新的空心纤维共价有机框架@多离子液体 (F-COF@polyILs) 涂层,用于固相微提取 (SPME). 这允许通过排除干扰性宏分子在生物样本中的氧多环芳 (OH-PAHs) 的直接,快速量化.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 在生物样本中精确量化氧多环芳 (OH-PAHs) 对于暴露评估至关重要.
- 生物矩阵中的宏分子干扰直接的OH-PAH分析,需要复杂的样品预处理.
- 开发用于选择性小分子提取的矩阵兼容涂层对于固相微提取 (SPME) 的进步至关重要.
研究的目的:
- 开发一种创新的SPME纤维涂层,能够排除大分子,用于直接分析小分子.
- 通过使用电和丝绕 (FW) 技术,创建一个稳定的,与矩阵兼容的涂层.
- 在复杂的生物样本中建立一个快速有效的方法来量化OH-PAHs.
主要方法:
- 使用电和FW制造空心纤维共价有机框架@多离子液体 (F-COF@polyILs) 涂层.
- 电气增强型SPME (EE-SPME) 的应用,用于加速极性OH-PAHs的吸附.
- 使用气体染色学-双重三重四极质谱法 (GC-MS/MS) 进行定量分析.
主要成果:
- F-COF@polyILs涂层显示出有效的宏分子排斥和加速吸附平衡 (25分钟).
- 开发的方法实现了低检测极限 (0.008-0.05 ng L-1),宽线性范围 (0.02-1000 ng L-1),以及良好的重复性 (1.0%-7.3%).
- 涂层纤维对矩阵干扰有很好的抵抗力 (2.5%-16.7%),并成功应用于人类尿液和血样本.
结论:
- 导线绕技术可以将基于粉末的COF材料转化为SPME的统一的非粉末涂层.
- F-COF@polyILs涂层纤维为从复杂的生物矩阵中选择性提取目标分析物提供了一个强大的平台.
- 这种方法对提高复杂样本矩阵中定量分析的效率和简单性具有重大意义.
相关概念视频
Ion Exchange
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 basic...
Capillary Electrophoresis: Applications
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...


