title: Metal-organic framework UiO-66 coated stainless steel fiber for solid-phase microextraction of phenols in water samples.
abstract: Effective solid-phase microextraction (SPME) of polar phenols from water samples is usually difficult due to the strong interaction between polar phenols and aqueous matrix. Here, we report the fabrication of a metal-organic framework UiO-66 coated stainless steel fiber via physical adhesion for the SPME of polar phenols (phenol, o-cresol, p-cresol, 2,6-dimethylphenol, 2,4-dichlorophenol and 2,6-dichlorophenol) in water samples before gas chromatographic separation with flame ionic detection. Headspace SPME of 10mL sample solution with the fabricated UiO-66 coated fiber gave the enhancement factors of 160 (phenol) - 3769 (2,4-dichlorophenol), and the linear ranges of 1-1000μgL(-1) (2,6-dimethylphenol, 2,4-dichlorophenol and 2,6-dichlorophenol), 1-500μgL(-1) (o-cresol and p-cresol) and 5-500μgL(-1) (phenol). The detection limits ranged from 0.11μgL(-1) (2,6-dimethylphenol) to 1.23μgL(-1) (phenol). The precision (relative standard deviations, RSDs) for six replicate determinations of the analytes at 100μgL(-1) using a single UiO-66 coated fiber ranged from 2.8% to 6.2%. The fiber-to-fiber reproducibility (RSDs) for three parallel UiO-66 coated fibers varied from 5.9% to 10%. The recoveries obtained by spiking 5μgL(-1) of the phenols in the water samples ranged from 80% to 115%.
authors.affiliation: State Key Laboratory of Medicinal Chemical Biology (Nankai University), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and Research Center for Analytical Science, College of Chemistry, Nankai University, Tianjin 300071, China.
authors.forename: Hai-Bo
authors.initials: HB
authors.lastname: Shang
authors.affiliation: State Key Laboratory of Medicinal Chemical Biology (Nankai University), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and Research Center for Analytical Science, College of Chemistry, Nankai University, Tianjin 300071, China.
authors.forename: Cheng-Xiong
authors.initials: CX
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Medicinal Chemical Biology (Nankai University), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and Research Center for Analytical Science, College of Chemistry, Nankai University, Tianjin 300071, China. Electronic address: xpyan@nankai.edu.cn.
authors.forename: Xiu-Ping
authors.initials: XP
authors.lastname: Yan
mesh_terms: D000327:Adsorption; D002849:Chromatography, Gas; D057230:Limit of Detection; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification*; D015203:Reproducibility of Results; D052617:Solid Phase Microextraction / Q000295:instrumentation / Q000379:methods*; D013193:Stainless Steel / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D010636:Phenols; D014874:Water Pollutants, Chemical; D013193:Stainless Steel; D015040:Zirconium
keywords: Metal–organic framework; Phenols; Solid-phase microextraction; UiO-66