合成稳定和高效的胺基共价有机框架纤维涂层,用于改善极性芳胺的固相微提取
Qidong Yu1, Wenmin Zhang2, Hui Chen1
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
|November 23, 2023
概括
这项研究引入了一种化策略,以增强共价有机框架 (COF) 涂层,提高其耐用性和吸附极性芳胺 (AAs) 用于固态微提取 (SPME). 这种新方法可以在真实样本中灵敏地检测AA.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 开发持久和选择性的共价有机框架 (COF) 涂层对于推进固相微提取 (SPME) 技术至关重要.
- 现有的COF涂层往往缺乏对极地目标所需的耐用性和亲和力,限制了它们的应用.
研究的目的:
- 制定一个简单的和一般的化策略,以提高COF涂层的耐用性和极性目标亲和力.
- 建立一种敏感的分析方法,以使用修改后的COF涂层检测极性芳胺 (AAs).
主要方法:
- 采用了一种新化策略,在COF涂层中将可逆的imine链接转化为不可逆的amide链接.
- 修改后的胺结合COF (Am-P-COF) 涂层被用于SPME,随后使用气色谱双重质谱法 (GC-MS/MS) 进行分析.
主要成果:
- 化策略显著提高了COF涂层的耐用性,并提高了极性AA的吸附效率.
- 开发的方法证明了广泛的线性范围 (0.5-500.0 ng L-1),低检测极限 (0.1-0.5 ng L-1),并成功地应用于茶饮料等真实样本.
- 该策略在不同的COF涂层中显示出良好的一般适用性.
结论:
- 这种易于化途径有效地提高了COF涂层的耐用性和对极性AA的亲和力.
- 由此产生的基于Am-P-COF的SPME-GC-MS/MS方法为AA微量检测提供了高灵敏度,可重复性和精度.
相关概念视频
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