College of Plant Science and Technology, Department of Plant Protection, Huazhong Agricultural University, Wuhan 430070, China.
National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Wuhan 430070, China.
Food Chem. 2024 Mar 30;437(Pt 2):137949. doi: 10.1016/j.foodchem.2023.137949. Epub 2023 Nov 10.
In this work, a magnetic adsorption material based on a metal-organic framework (FeO@PPy@MIL-53(Fe)) was designed and prepared, as well as used as an adsorbent for the extraction of fungicides from fresh juice and environmental water. The material was subjected to a series of characterization analyses, which showed that the material has good potential for application as an adsorbent. The main parameters such as adsorbent dosage, adsorption time, elution time, pH value, and elution solvent which could affect the experiment results were optimized. Under optimal conditions, the method exhibited linearity (R ≥ 0.9994) in the concentration range 10-1000 µg/L for three triazole fungicides, and LOD value ranged from 2.1 µg/L to 2.9 µg/L. In addition, the established method was applied to real samples of three fruit juices and two ambient waters, and satisfactory recoveries in the range of 78.6%-105.4% and RSDs of ≤ 5.7% were obtained.
在这项工作中，设计并制备了一种基于金属有机骨架（FeO@PPy@MIL-53(Fe)）的磁性吸附材料，并将其用作从新鲜果汁和环境水中提取杀菌剂的吸附剂。对材料进行了一系列的表征分析，结果表明该材料具有作为吸附剂应用的良好潜力。优化了可能影响实验结果的主要参数，如吸附剂用量、吸附时间、洗脱时间、pH 值和洗脱溶剂。在最佳条件下，该方法在三种三唑类杀菌剂浓度为 10-1000 µg/L 的范围内呈现出良好的线性关系（R≥0.9994），检出限范围为 2.1-2.9 µg/L。此外，该方法还应用于三种果汁和两种环境水样的实际样品中，获得了 78.6%-105.4%的回收率和≤5.7%的相对标准偏差（RSD）。
