首页|Combination of pipette tip solid phase extraction and high performance liquid chromatography for determination of plant growth regulators in food samples based on the electrospun covalent organic framework/polyacrylonitrile nanofiber as highly efficient sorbent

Combination of pipette tip solid phase extraction and high performance liquid chromatography for determination of plant growth regulators in food samples based on the electrospun covalent organic framework/polyacrylonitrile nanofiber as highly efficient sorbent

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  • NSTL
  • Elsevier
Facile and sensitive determination of plant growth regulators (PGRs) in food samples is important but still remains great challenge. Herein, a pipette tip solid phase extraction (PT-SPE) method was de-veloped for fast and sensitively detecting PGRs. The PT-SPE adsorbent was prepared by integrating a novel covalent organic framework (COF) of schiff base network 3 (SNW-3) and polyacrylonitrile (PAN) through electrospinning. The SNW-3 can easily adsorb PGRs with high special affinity through electrova-lent bands between the ammonium ions of SNW-3 and the carboxy groups of PGRs. The polymer of PAN acts as scaffold material for SNW-3, which can lower seepage pressure hence accelerates adsorp-tion/desorption kinetics. By combination with HPLC-DAD, a satisfactory method was successfully devel-oped for simultaneous determination of ten PGRs in watermelon. Good analytical performances were achieved with this proposed method, including good linearity (5-500 ng/mL) with high correlation co-efficients ( R >= 0.9981), low limits of detection (S/N = 3, 0.24-3.19 ng/mL) and limits of quantification (S/N = 10, 1.65-5.72 ng/mL), satisfactory precision (intra-day RSDs < 2.7%, inter-day RSDs < 3.7%), and high accuracy (recovery: 82.8-113.0%). The method developed in this study shows high potential for de-sign of high target-affinity adsorbents for food sample preparing. (c) 2021 Elsevier B.V. All rights reserved.

Plant growth regulatorsPipette tip solid phase extraction (PT-SPE)Covalent-organic frameworks (COFs)COF@PAN nanofiberHigh performance liquid chromatography&nbsp(HPLC)(HPLC)BETA-CYCLODEXTRINPHYTOHORMONESMICROSPHERESADSORBENTPOLYMERSAUXINS

Dai, Yue、Cheng, Yuanyuan、Zhang, Lingdong、Kong, Rong-Mei、Tian, Xiaoxia、Kong, Cong、Xia, Lian、Li, Guoliang

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Qufu Normal Univ

Chinese Acad Fishery Sci

Shaanxi Univ Sci & Technol

2022

10.1016/j.chroma.2021.462692

Journal of chromatography

Journal of chromatography

ISSN：0021-9673
年,卷(期)：2022.1661
  • 13
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