Effective enrichment and detection of plant growth regulators in fruits and vegetables using a novel magnetic covalent organic framework material as the adsorbents

Ning Li, Di Wu, Xiuting Li, Xuxia Zhou, Guangsen Fan, Guoliang Li*, Yongning Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

The present research reported a facile strategy for the synthesis of a novel magnetic covalent organic frameworks (Fe3O4@COF(TpDA)) material and applied it as a sorbent for magnetic solid phase extraction of plant growth regulators from fruits and vegetables. The prepared Fe3O4@COF materials showed many attractive features involving large specific surface area (180.2 m2/g) and high saturation magnetization (62.3 emu/g), which enabled it an ideal sorbent for sample pretreatment. The experimental conditions affecting the extraction performance were optimized systematically, including eluent, amount of sorbent, adsorption time and desorption time. The extracted samples were detected by HPLC-DAD. Under the optimized conditions, the proposed method exhibited good linearity (R ≥ 0.9990) and low limits of detection (4.68–7.51 μg/L). Satisfactory recoveries were calculated to be 83.0–105.0%. Finally, the proposed method was successfully applied to determination of plant growth regulators in fruits and vegetables, indicating the potential prospect of the Fe3O4@COF(TpDA) materials in sample pretreatment.

Original languageEnglish
Article number125455
JournalFood Chemistry
Volume306
Early online date17 Oct 2019
DOIs
Publication statusPublished - 15 Feb 2020
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the National Natural Science Foundation of China ( 21677085 and 31801454 ), the Natural Science Foundation of Shandong Province ( ZR2017JL012 ), the Science and Technology Nova Plan of Shaanxi Province ( 2019KJXX-010 ) and the Youth Innovation Team of Shaanxi Universities (Food Quality and Safety Innovation Team).

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

  • Fruits and vegetables
  • High performance liquid chromatography
  • Magnetic covalent organic frameworks
  • Magnetic solid phase extraction
  • Plant growth regulators

ASJC Scopus subject areas

  • Analytical Chemistry
  • Food Science

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