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在通过LC-MS/MS量化之前,用于选择性丰富氧碳酸除草剂的磁性酸共价有机框架

Guiju Xu¹, Xingyun Zhao², Chenghao Hou³

¹Institute of Food & Nutrition Science and Technology, Shandong Academy of Agricultural Sciences, Jinan, China. xuguiju2013@126.com.

Mikrochimica acta

|September 22, 2025

概括

一种新的磁性吸附剂Fe3O4@DB-iCOF有效地从水中提取氧碳酸除草剂 (PCA). 这种方法为环境样本中微量PCA分析提供了高灵敏度和精度.

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:

氧碳酸除草剂 (PCA) 是广泛使用的杀虫剂.
检测水中的微量PCA的有效方法对于环境监测至关重要.
现有的方法可能缺乏选择性或需要复杂的程序.

研究的目的:

开发一种新的磁吸附剂,用于有效丰富PCAs.
建立一种灵敏而准确的分析方法,以检测水样中的微量PCA.
研究开发的吸附剂的吸附机制和可重复使用性.

主要方法:

使用二氧化 (DB) 合成磁性离子共价有机框架 (Fe3O4@DB-iCOF).
优化磁性固相提取 (MSPE) 参数用于PCA的丰富.
使用液态染色体协同质谱法 (LC-MS/MS) 分析PCA.
密度函数理论 (DFT) 和分子动力学 (MD) 模拟来研究吸附机制.

主要成果:

Fe3O4@DB-iCOF证明了PCAs的选择性和可重复使用的吸附.
该MSPE-LC-MS/MS方法显示了广泛的线性范围 (10-2000 ng L-1) 和高灵敏度 (LODs 0.8-1.9 ng L-1).
DFT和MD模拟证实了由静电相互作用驱动的自发,外热吸附.
在河流和湖泊水样本中精确确定PCA,回收率从90.8%到103.1%.

结论:

Fe3O4@DB-iCOF是PCAs的MSPE的一个有前途的吸附剂.
开发的方法为环境水中的PCA分析提供了敏感,选择性和准确的方法.
这项研究阐明了吸附机制,突出了静电相互作用的作用.

关键词:

在 ICOF 中,ICOF 是 ICOF.磁性固体相提取磁性固体相提取混合模式的离子交换吸附剂.分子动力学模拟模型在PCA中,PCAs是PCAs.

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