Facile synthesis of boric acid-functionalized magnetic covalent organic frameworks and application to magnetic solid-phase extraction of trace endocrine disrupting compounds from meat samples

Jin Liu, Zhuoqun Su, Qinfeng Xu, Yiheng Shi, Di Wu, Lin Li, Yongning Wu, Guoliang Li*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

A facile approach was proposed for the preparation of boric acid-functionalized core–shell structured magnetic covalent organic framework (COF) nanocomposites through employing the Fe3O4 nanoparticles as magnetic core, boric acid-functionalized COFs as the shell via sequential post-synthetic modification (denoted as Fe3O4@COF@BA). The synthesized nanocomposites showed large specific surface area, high magnetic responsiveness, and desirable chemical and thermal stability. Combined with HPLC-MS/MS, the as-prepared Fe3O4@COF@BA composite was applied as a sorbent for magnetic solid-phase extraction (MSPE) of endocrine disrupting compounds (EDCs) from meat samples. Under optimal conditions, the method displays low limits of detection (LODs, 0.08–0.72 μg kg−1) and good precision with relative standard deviations (RSD) lower than 5.4 %. The approach was successfully employed for the extraction and detection of EDCs in blank and spiked beef, chicken and pork samples with recovery ranging from 88.8 to 104.2 %.

Original languageEnglish
Article number133843
JournalFood Chemistry
Volume399
Early online date20 Aug 2022
DOIs
Publication statusPublished - 15 Jan 2023

Keywords

  • Covalent organic frameworks
  • Endocrine disrupting compounds
  • Enrichment
  • HPLC-MS/MS
  • Magnetic solid-phase extraction

ASJC Scopus subject areas

  • Analytical Chemistry
  • Food Science

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