Facile extraction and determination of organophosphorus pesticides in vegetables via magnetic functionalized covalent organic framework nanocomposites

IF 8.5 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2021-02-01 DOI:10.1016/j.foodchem.2020.127974

Guoliang Li , Aying Wen , Jianghua Liu , Di Wu , Yongning Wu

{"title":"Facile extraction and determination of organophosphorus pesticides in vegetables via magnetic functionalized covalent organic framework nanocomposites","authors":"Guoliang Li , Aying Wen , Jianghua Liu , Di Wu , Yongning Wu","doi":"10.1016/j.foodchem.2020.127974","DOIUrl":null,"url":null,"abstract":"<div>Facile enrichment and determination of trace organophosphorus pesticides (OPPs) in foods has been a constantly pursuing goal in food safety field. Herein, Zr4+-immobilized covalent organic frameworks (Fe3O4@COF@Zr4+) have been first constructed and utilized as the powerful adsorbents for magnetic solid-phase extraction (MSPE) of OPPs. Owing to the π-π stacking interaction, hydrogen bonding and Zr4+-phosphate coordination reaction, the composites exhibited excellent selectivity and superior affinity to OPPs. Under optimized conditions, the proposed MSPE method coupled with GC-FPD showed good linearity (R2 ≥ 0.9990) and yielded low limits of detection (0.7–3.0 μg kg−1) for OPPs. Moreover, the developed method was successfully employed for the quantitation of OPPs in spiked vegetable samples and obtained satisfactory recoveries in the range of 87–121% with the relative standard deviations (RSDs) ≤ 8.9%. These results demonstrated that the prepared nanoparticles hold unique advantages for trace OPPs analysis in foodstuffs.</div>","PeriodicalId":318,"journal":{"name":"Food Chemistry","volume":"337 ","pages":"Article 127974"},"PeriodicalIF":8.5000,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.foodchem.2020.127974","citationCount":"53","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Food Chemistry","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0308814620318367","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 53

Abstract

Facile enrichment and determination of trace organophosphorus pesticides (OPPs) in foods has been a constantly pursuing goal in food safety field. Herein, Zr⁴⁺-immobilized covalent organic frameworks (Fe₃O₄@COF@Zr⁴⁺) have been first constructed and utilized as the powerful adsorbents for magnetic solid-phase extraction (MSPE) of OPPs. Owing to the π-π stacking interaction, hydrogen bonding and Zr⁴⁺-phosphate coordination reaction, the composites exhibited excellent selectivity and superior affinity to OPPs. Under optimized conditions, the proposed MSPE method coupled with GC-FPD showed good linearity (R² ≥ 0.9990) and yielded low limits of detection (0.7–3.0 μg kg⁻¹) for OPPs. Moreover, the developed method was successfully employed for the quantitation of OPPs in spiked vegetable samples and obtained satisfactory recoveries in the range of 87–121% with the relative standard deviations (RSDs) ≤ 8.9%. These results demonstrated that the prepared nanoparticles hold unique advantages for trace OPPs analysis in foodstuffs.

查看原文本刊更多论文

磁性功能化共价有机骨架纳米复合材料快速提取测定蔬菜中有机磷农药

食品中痕量有机磷农药的快速富集与测定一直是食品安全领域不断追求的目标。本文首次构建了Zr4+固定化共价有机骨架(Fe3O4@COF@Zr4+)，并将其作为磁性固相萃取(MSPE) OPPs的强力吸附剂。由于π-π堆积相互作用、氢键和Zr4+-磷酸配位反应，复合材料对OPPs具有优异的选择性和亲和力。在优化条件下，MSPE与GC-FPD的线性关系良好(R2≥0.9990)，OPPs的检出限低(0.7 ~ 3.0 μg kg−1)。该方法可用于加标蔬菜样品中OPPs的定量，加标回收率为87 ~ 121%，相对标准偏差(rsd)≤8.9%。这些结果表明，制备的纳米颗粒在食品中痕量OPPs分析中具有独特的优势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.