Highly efficient extraction of atrazine and propazine from food samples using poly (vinyl alcohol) electrospun nanofibers modified with graphene oxide/cellulose

Aliakbari, Benyamin; Amini, Shima; Ebrahimzadeh, Homeira; Kandeh, Saeed Hejabri

doi:10.1007/s11696-023-02857-6

Cited by 4 publications

(1 citation statement)

References 34 publications

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“…Polyacrylonitrile (PAN) is an organic high polymer, which is widely used in the preparation of electrospinning nanofibers due to its special properties such as good thermal stability, chemical stability, and mechanical stability [23]. To improve the extraction efficiency of TFME, many functional materials are incorporated into the polymer matrix, such as metal-organic frameworks [24], covalent organic frameworks (COFs) [25], graphene oxide [26], carbon nanotube [27], etc. COF due to its unique advantages of large specific surface area and abundant active sites, can reduce the amount and balance of adsorbent time and improve the extraction efficiency, which has been widely used for separation and enrichment [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Electrospun nanofibers‐based thin film microextraction for enrichment of phthalate esters in biodegradable plastics

Su,

Wang,

et al. 2024

J of Separation Science

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In this work, a novel electrospun nanofiber (PAN/TpBD; 2,4,6‐triformylphloroglucinol [Tp] and benzidine [BD]; polyacrylonitrile [PAN]) was fabricated via a facile electrospinning method and utilized as adsorbent in thin film microextraction (TFME) of phthalate esters (PAEs) (dimethyl phthalate, diethyl phthalate, diallyl phthalate, dibutyl phthalate, and dioctyl phthalate) in biodegradable plastics. The prepared PAN/TpBD combines the strong stability of nanofibers with increased exposure sites for covalent organic frameworks and enhanced interactions with the target, thus improving the enrichment effect on the target. The extraction efficiency of PAN/TpBD reached above 80%. Based on PAN/TpBD, a TFME‐high‐performance liquid chromatography method was established, and the experimental parameters were optimized. Under the optimal extraction conditions, the PAEs of this method varied linearly in the range of 10–10 000 µg/L with low detection limits (0.69–2.72 µg/L). The intra‐day and inter‐day relative standard deviation values of the PAEs were less than 8.04% and 8.73%, respectively. The adsorbent can achieve more than 80% recovery of the five targets after six times reuse. The developed method was successfully applied for the determination of trace PAEs in biodegradable plastics with recoveries ranging from 80.1% to 113.4% and relative standard deviations were less than 9.45%. The as‐synthesized PAN/TpBD adsorbent exhibited great potential in PAE analysis.

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