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  • Title: A carbazole-based spherical microporous polymer for the solid-phase extraction of chlorophenols from water and honey samples.
    Author: Guo Y, Wang J, Hao L, Liu W, Yang X, Wu Q, Wang Z.
    Journal: Food Chem; 2023 Jan 01; 398():133855. PubMed ID: 35944307.
    Abstract:
    A new carbazole-based spherical microporous polymer (Car-BDA-POP) was fabricated by employing 4,4'-biphenyldicarboxaldehyde (BDA) and carbazole as monomers via a one-step and non-metal catalyst synthetic approach. It was then explored as an adsorbent for solid-phase extraction (SPE) of some chlorophenols (CPs). Under the optimized extraction conditions, the established Car-BDA-POP-based SPE coupled with high-performance liquid chromatography ultraviolet detection showed good linearity in the concentration range of 0.1-200 ng mL-1 for water samples and 5.0-800 ng g-1 for honey samples with the determination coefficients (r2) ≥ 0.9995 for the analytes. The limits of detection (S/N = 3) for the analytes were in the range of 0.03-0.06 ng mL-1 for water samples and 1.50-2.50 ng g-1 for honey samples. The method recoveries varied from 80.0 % to 116 % in spiked real samples, with the relative standard deviations less than 9.6 %. In addition, the possible adsorption mechanism, adsorption kinetics, and adsorption isotherms were also investigated.
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