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在食品样本中探索基于多孔胺的共价有机框架,用于固相提取食品样本中的五种微量硫胺

Yingjiao Dong¹, Yao Chen¹, Ruijie Wang¹

¹College of Veterinary Medicine, South China Agricultural University, Guangzhou, P. R. China.

Journal of separation science

|November 7, 2023

概括

在室温下合成的新型多孔共价有机框架有效地从食物中净化微量硫胺. 这种材料作为固体相提取吸附剂在复杂矩阵中用于药物残留分析具有前景.

科学领域:

材料科学材料科学材料科学
分析化学分析化学
环境科学环境科学

背景情况:

硫胺 (SAs) 是广泛使用的抗生素,在食品中可能存在残留物.
需要有效的方法来检测复杂的食品矩阵中SAS的微量水平.
多孔材料为选择性吸附和分离提供独特的特性.

研究的目的:

为了合成和描述一种新的基于 imine 的共价有机框架 (COF).
评估COF作为食品中微量硫胺的固体相提取 (SPE) 吸附剂.
优化SPE方法并评估其用于药物残留分析的性能.

主要方法:

在室温下合成高结晶性,多孔性基于 imine 的 COF.
使用各种分析技术对COF结构的表征.
优化SPE参数和使用超高性能液体染色学-四极飞行质谱时间 (UHPLC-QTOF-MS) 的分析.
吸附异温研究 (Langmuir和Freundlich) 和与Nitrofuran代谢物提取的比较.

主要成果:

成功合成了一种精确定义的,多孔的以 imine 为基础的 COF.
优化的SPE方法实现了硫胺的低检测极限 (0.02-0.19μg/kg).
高回收率 (70.5%-105.3%) 证明了COF吸附剂的有效性.
氧化具有很好的硫胺吸附能力,与其他分析剂相比.

结论:

合成的以胺为基础的COF是一种高效的SPE吸收剂,可用于食品样本中的微量硫胺.
开发的方法提供了一种敏感和可靠的方法,用于复杂矩阵中的药物残留物丰富.
这项研究提供了一种系统的方法,用于开发用于分析应用的多孔吸附剂.

关键词:

吸附剂是一种吸附剂.吸附机制是一种吸附机制.一个共价有机框架.固体阶段提取的方法硫胺酸硫胺的使用方法

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