Efficient Adsorptive Separation and Determination of Phenolic Acids from Orange Peels Using Hyper-Crosslinked Polymer Based Zeolitic Imidazolate Framework-8 (ZIF-8) Composites. (1st November 2020)

• Record Type: Journal Article
• Authors: Sun, Liping; Tang, Weiyang; Zhu, Tao; Row, Kyung Ho
• Is Part Of: Analytical letters. Volume 53:Number 16(2020)
• Page Start: 2636
• Page End: 2655
• Publication Date: 2020-11-01
• Subjects: dispersion solid-phase extraction (DSPE) -- high-performance liquid chromatography (HPLC) -- hyper-crosslinked polymer -- phenolic acids -- zeolitic imidazolate framework-8 (ZIF-8); Chemistry, Analytic -- Periodicals; Chemistry, Analytic -- Abstracts; 543
• DOI: 10.1080/00032719.2020.1751180
• Languages: English
• ISSNs: 0003-2719

Abstract

Abstract: A new and efficient hypercrosslinked polymer-based zeolitic imidazolate framework-8 composite called ZIF-8-HCP was synthesized. The properties of the material including zeolitic imidazolate framework-8 and hypercrosslinked polymer were analyzed using seven characterization methods. In addition, the materials were used as adsorbents for the dispersion solid-phase extraction for the separation and determination of phenolic acids in orange peel samples. The adsorption capacities of the resulting materials were characterized. The selectivity of zeolitic imidazolate framework-8 was greatly enhanced after the introduction of a hyper-crosslinked polymer as the skeleton. The microstructure modification introduced a large number of mesoporous sites that allowed better adsorption of the caffeic acid and ferulic acid targets. The adsorption capacities of the composite ZIF-8-HCP were 31.72 mg/g for the former and 15.58 mg/g for the latter. In addition, the limits of detection and quantification were 0.0188 and 0.0627 μg/mL and 0.0177 and 0.0592 μg/mL, respectively. A feasible analytical method was established for the targets in orange peel samples using the ZIF-8-HCP with satisfactory extraction recoveries of 92.90% and 98.87%. The proposed method using the synthesized material was employed to the trace determination of the phenolic acids by high-performance liquid chromatography (HPLC).