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Electrospun metal-organic framework/polyacrylonitrile composite nanofibrous mat as a microsorbent for extraction of tetracycline residue in human blood plasma.

A new composite nanofiber of polyacrylonitrile doped with copper benzene-1,3,5-tricarboxylate metal-organic framework was fabricated by electrospinning and used as a microsorbent in solid phase extraction of trace tetracycline. The chemical structure of adsorbent was studied by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller surface area analysis and Barrett-Joyner-Halenda pore size and volume analysis techniques. The significant parameters of the method including desorption solvent kind and volume, adsorbent mass, pH, and salt percentage were investigated. At the optimized conditions, the linear range was 8-1000 μg L-1 with a determination coefficient (R2 ) of 0.9954. The limits of detection and quantification were 2.40 and 8.00 μg L-1 , respectively. The inter-day and intra-day precisions were 4.7 and 3.4%, respectively. The developed extraction method was followed by HPLC and applied for the determination of tetracycline in human blood plasma, and good relative recoveries (97.3-104.5%) were obtained. This article is protected by copyright. All rights reserved.

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