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在农产品中的甲状腺杀虫剂的多种残留物分析中,用水性深性溶剂为基础的铁流体:易于预处理和MS友好的检测

Yuxin Liu¹, Chenjie Ma², Mantang Chen²

¹College of Food Science and Technology, Henan University of Technology, Lianhua Street, Zhengzhou 450001, PR China; Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, PR China.

Journal of chromatography. A

|August 7, 2025

概括

一种新方法使用磁铁流体与深度溶解剂来快速从食物中提取16种甲状腺杀虫剂残留物. 这种技术提供了高效的分离和保护分析仪器,使水果和蔬菜的敏感检测成为可能.

科学领域:

分析化学分析化学
环境科学环境科学
食品安全食品安全

背景情况:

过度使用甲状腺杀虫剂 (PYs) 存在生态和健康风险.
监管机构已经实施了对PYs.的更严格的最大残留量限制 (MRL).
开发PYs的多残留分析方法对于监测至关重要.

研究的目的:

开发一种高效和灵敏的方法,用于同时确定16个PYs残留物.
为了利用一种新型的疏水性深度环氧化溶剂-铁流体 (HDES-FF) 作为微提取吸附剂.
为了确保该方法与气相色谱-并联质谱法 (GC-MS/MS) 的兼容性.

主要方法:

油酸涂层Fe3O4纳米颗粒 (Fe3O4-OA) 的合成,分散在基于库马林-蒂摩尔的疏水性深溶解剂 (HDES) 中.
准备好的HDES-FF作为16个PYs的旋转辅助液相微提取吸附剂的应用.
使用气体染色学-并联质谱法 (GC-MS/MS) 进行丰富PY的分析.

主要成果:

在3.5分钟内,HDES-FF吸附剂通过π-π堆叠和疏水相互作用实现了16个PY的有效丰富.
Fe3O4-OA纳米颗粒的磁性分离使样品易于清理.
该方法表现出良好的线性,低检测极限 (0.41-7.91 ng/mL),高恢复率 (83.33-106.02%),以及低RSD (<4.20%在一天内,<6.94%在一天内).
热重力测量分析证实了GC-MS/MS注入口中的HDES分解,保护了离子源并使得DES兼容.

结论:

开发的基于HDES-FF的微提取与GC-MS/MS相结合是一种快速,高效和灵敏的方法,用于确定多重甲类残留物.
这种方法有效地解决了与传统基于DES的微提取相关的分离挑战,并保护了分析仪器.
该方法成功地在实物水果和蔬菜样本中检测到16个PY,为食品安全监测做出了贡献.

关键词:

铁流体是一种铁流体.GCMS/MS/MS是什么意思水性深层欧特克溶剂溶剂液相微提取液相微提取方法甲状素杀虫剂是一种杀虫剂.

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