相关实验视频

Updated: Jan 7, 2026

Analysis of Organochlorine Pesticides in a Soil Sample by a Modified QuEChERS Approach Using Ammonium Formate

Analysis of Organochlorine Pesticides in a Soil Sample by a Modified QuEChERS Approach Using Ammonium Formate

Published on: January 20, 2023

在水果和果汁中用磁性固体相提取有机农药,使用基于伊米达的多离子液) 改性蒙莫里隆尼特

Nur Athirah Noorhisham¹, Ahmad Husaini Mohamed¹, Noorfatimah Yahaya²

¹School of Chemistry and Environment, Faculty of Applied Sciences, Universiti Teknologi MARA, Cawangan Negeri Sembilan, Kampus Kuala Pilah, 72000 Kuala Pilah, Malaysia.

|December 26, 2025

概括

一种新的磁性吸附剂Fe3O4-ImPIL@MMT有效地从水果中提取有机农药 (OPP). 这种方法为食品安全中的农药残留物监测提供了敏感的检测.

科学领域:

环境化学环境化学
分析化学分析化学
材料科学材料科学材料科学

背景情况:

有机农药 (OPP) 对人类健康和生态系统构成风险.
在食品矩阵中准确检测OPP对于消费者安全至关重要.
现有的OPP检测方法通常需要复杂的样本准备,并且可能遭受矩阵效应.

研究的目的:

开发一种新的磁吸附剂,用于高效地提取OPPs.
将吸附剂与GC-MS结合起来,用于敏感和选择性的OPP确定.
为了验证在水果和果汁样本中分析OPP的方法.

主要方法:

合成一种基于磁性伊米达的多离子液体) 修改的蒙莫里隆尼特 (Fe3O4-ImPIL@MMT) 吸附剂.
优化磁性固相提取 (MSPE) 的参数.
使用气体染色学质谱法 (GC-MS) 分析OPP.

主要成果:

Fe3O4-ImPIL@MMT吸附剂在OPP的MSPE中表现出高效率.
该方法实现了极好的线性 (R2 = 0.995-0.999) 和低检测极限 (0.01-0.73 ng g-1).
葡萄,子和它们的果汁的真实样本显示出可检测到的托尔克洛福斯-甲基和埃塞翁的水平.

结论:

开发的Fe3O4-ImPIL@MMT材料是用于OPP分析的有希望的绿色吸附剂.
MSPE-GC-MS方法为农药残留监测提供了一种简单,高效和选择性的方法.
该技术通过可靠检测农药污染物,有助于确保食品安全.

关键词:

果实果实是一种水果.磁性固体相提取磁性固体相提取这是一种蒙莫里隆石 (Montmorillonite).杀虫剂是一种杀虫剂.聚离子液体) 是一种多离子液体.

更多相关视频

Detection of Regulated Ergot Alkaloids in Food Matrices by Liquid Chromatography-Trapped Ion Mobility Spectrometry-Time-of-Flight Mass Spectrometry

Detection of Regulated Ergot Alkaloids in Food Matrices by Liquid Chromatography-Trapped Ion Mobility Spectrometry-Time-of-Flight Mass Spectrometry

Published on: November 22, 2024

Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique

Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique

Published on: September 28, 2022

相关概念视频

Extraction: Advanced Methods

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...

Ion-Exchange Chromatography

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...