کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7612848 | 1493569 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Metal-organic framework UiO-66 coated stainless steel fiber for solid-phase microextraction of phenols in water samples
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: 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](/preview/png/7612848.png)
چکیده انگلیسی
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 10 mL 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 1-1000 μg Lâ1 (2,6-dimethylphenol, 2,4-dichlorophenol and 2,6-dichlorophenol), 1-500 μg Lâ1 (o-cresol and p-cresol) and 5-500 μg Lâ1 (phenol). The detection limits ranged from 0.11 μg Lâ1 (2,6-dimethylphenol) to 1.23 μg Lâ1 (phenol). The precision (relative standard deviations, RSDs) for six replicate determinations of the analytes at 100 μg Lâ1 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 5 μg Lâ1 of the phenols in the water samples ranged from 80% to 115%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1357, 29 August 2014, Pages 165-171
Journal: Journal of Chromatography A - Volume 1357, 29 August 2014, Pages 165-171
نویسندگان
Hai-Bo Shang, Cheng-Xiong Yang, Xiu-Ping Yan,