首页|Efficient Extraction and Determination of Carbamate Pesticides in Vegetables Based on a Covalent Organic Frameworks with Acylamide Sites

Efficient Extraction and Determination of Carbamate Pesticides in Vegetables Based on a Covalent Organic Frameworks with Acylamide Sites

扫码查看
原文链接
  • NSTL
  • Elsevier
A B S T R A C T It is an important challenge to effectively extract and determine pesticides in complex samples. Co-valent organic frameworks (COFs) are burgeoning porous crystalline organic materials with good envi-ronmental resistance, thus demonstrating great potential as adsorbents in contaminants detection. In this work, we design and synthesize a novel COF-TpDB via 1,3,5-triformylphloroglucinol (Tp) and 4,4'-diaminobenzoylanilide (DB) as well as its packed cartridge for solid phase extraction (SPE) of carbamate pesticides. Simulation calculations showed H-bonding facilitates the adsorption interactions between the carbamate pesticides and TpDB. A method was developed by coupling TpDB as SPE sorbents with high performance liquid chromatography-ultraviolet (HPLC-UV) detection to determine trace carbamate pesti-cides in vegetables. The established method showed a wide linear range of 0.1-200 ng mL -1 and low limit of detections (0.0 05-0.05 ng mL -1) for four carbamate pesticides. The applicability of TpDB as adsorbent was investigated for determination of trace carbamate pesticides residue in vegetables with satisfactory recoveries of four carbamates in the range of 80.4-101.2%. The results demonstrated that the COF-TpDB offer great potential for efficient extraction of carbamate pesticides from complicate matrices. (c) 2022 Elsevier B.V. All rights reserved.

Covalent organic frameworksCarbamate pesticidesSolid phase extractionVegetable samplesSOLID-PHASE EXTRACTIONPERFORMANCE LIQUID-CHROMATOGRAPHYTANDEM MASS-SPECTROMETRYCARBON NANOTUBESMONOLITHIC COLUMNORGANOPHOSPHORUSMICROEXTRACTIONWATERADSORBENT

Guo, Hongying、Chen, An、Zhou, Jinghui、Li, Yijun、He, Xiwen、Chen, Langxing、Zhang, Yukui

展开 >

Nankai Univ

2022

10.1016/j.chroma.2021.462799

Journal of chromatography

Journal of chromatography

ISSN：0021-9673
年,卷(期)：2022.1664
  • 14
  • 39