Fabrication of a green double-layered hybrid nanocomposite via electrospinning of polyethersulphone/natural deep eutectic solvent on bacterial cellulose for determination of multiclass pesticides in water samples.

Autor: Mokarami MSA; School of Chemistry, College of Science, University of Tehran, Tehran, Iran., Sereshti H; School of Chemistry, College of Science, University of Tehran, Tehran, Iran. Electronic address: sereshti@ut.ac.ir.
Jazyk: angličtina
Zdroj: Journal of chromatography. A [J Chromatogr A] 2024 Oct 25; Vol. 1735, pp. 465267. Date of Electronic Publication: 2024 Sep 05.
DOI: 10.1016/j.chroma.2024.465267
Abstrakt: A novel nanofibrous double-layered biosorbent was fabricated by electrospinning polyethersulfone (PES) doped with a natural deep eutectic solvent (DES), composed of choline chloride (ChCl) and caffeic acid (CFA) in a 3:1 molar ratio, onto a bacterial cellulose (BC) substrate. The pristine PES/DES@BC biosorbent was employed in a thin film-solid phase microextraction (TF-SPME) to extract 12 multiclass pesticides from water. Characterization techniques, including ATR-FTIR, FT-NMR, SEM, and nitrogen adsorption/desorption isotherms, confirmed the nanofibrous structure of the electrospun PES-DES and BC biopolymer. The method was validated for matrix effect, specificity, reproducibility, limits of quantification (0.03-0.10 µg/L), and enrichment factor (7-14). Matrix-match calibration linearity ranged from 0.03 to 500 μg/L, with determination coefficients (r²) between 0.9884 and 0.9994. Intra-day and inter-day relative standard deviations (RSDs) were 1.2-3.6 % and 7.0-9.3 %, respectively. The composition of the biosorbent and the fabrication reproducibility across different batches were also thoroughly examined. The accuracy was evaluated by measuring extraction recoveries in six environmental water samples, which ranged from 75 to 105 % (RSDs < 9.0 %). Furthermore, the sustainability of the method was evaluated with the Analytical Eco-Scale and Analytical Greenness metrics. To our knowledge, this study represents the first synthesis and combination of [ChCl:[CFA] DES with PES to create a double-layered nanofiber biosorbent, as well as its application for extracting various pesticide groups from water samples.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024. Published by Elsevier B.V.)
Databáze: MEDLINE
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