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  • Metal-organic framework UiO-66 coated stainless steel fiber for solid-phase microextraction of phenols in water samples.

Metal-organic framework UiO-66 coated stainless steel fiber for solid-phase microextraction of phenols in water samples.

Journal of chromatography. A (2014-06-04)
Hai-Bo Shang, Cheng-Xiong Yang, Xiu-Ping Yan
摘要

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%.

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Sigma-Aldrich
锆, powder, −100 mesh
Sigma-Aldrich
锆, foil, thickness 0.1 mm, 99.98% trace metals basis
Sigma-Aldrich
锆, sponge, ≥99% trace metals basis
Sigma-Aldrich
锆, rod, diam. 6.35 mm, ≥99% trace metals basis
锆, rod, 100mm, diameter 50mm, centerless ground, 99.2%
Sigma-Aldrich
锆, powder, in water, -325 mesh, 99.5% trace metals basis (excluding Hf)
锆, foil, not light tested, 50x50mm, thickness 0.006mm, 99.2%
锆, rod, 1000mm, diameter 1.5mm, 99.2%
锆, rod, 1000mm, diameter 12.7mm, centerless ground, 99.2%
锆, rod, 1000mm, diameter 2.0mm, centerless ground, 99.2%
锆, rod, 1000mm, diameter 3.0mm, centerless ground, 99.2%
锆, rod, 1000mm, diameter 5.0mm, centerless ground, 99.2%
锆, rod, 1000mm, diameter 6.0mm, centerless ground, 99.2%
锆, rod, 1000mm, diameter 9.5mm, centerless ground, 99.2%
锆, rod, 100mm, diameter 1.5mm, 99.2%
锆, rod, 100mm, diameter 12.7mm, centerless ground, 99.2%
锆, rod, 100mm, diameter 19.0mm, centerless ground, 99.2%
锆, rod, 100mm, diameter 2.0mm, centerless ground, 99.2%
锆, rod, 100mm, diameter 3.0mm, centerless ground, 99.2%
锆, rod, 100mm, diameter 5.0mm, centerless ground, 99.2%
锆, rod, 100mm, diameter 6.0mm, centerless ground, 99.2%
锆, rod, 100mm, diameter 9.5mm, centerless ground, 99.2%
锆, rod, 200mm, diameter 1.5mm, 99.2%
锆, rod, 200mm, diameter 12.7mm, centerless ground, 99.2%
锆, rod, 200mm, diameter 19.0mm, centerless ground, 99.2%
锆, rod, 200mm, diameter 2.0mm, centerless ground, 99.2%
锆, rod, 200mm, diameter 3.0mm, centerless ground, 99.2%
锆, rod, 200mm, diameter 5.0mm, centerless ground, 99.2%
锆, rod, 200mm, diameter 6.0mm, centerless ground, 99.2%
锆, rod, 200mm, diameter 9.5mm, centerless ground, 99.2%

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