کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1198762 1493485 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A water resistant solid-phase microextraction fiber with high selectivity prepared by a metal organic framework with perfluorinated pores
ترجمه فارسی عنوان
فیبر میکرو اکستراکتیو جامد فاز با انتخاب پذیری بالا آماده شده توسط یک چارچوب آلومینیومی فلزی با منافذ های پرفروفی شده است
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Zn-FMOF@PI SPME fiber exhibited rare highly selective extraction for benzene.
• Zn-FMOF@PI SPME fiber exhibited highly hydrophobic character.
• Zn-FMOF@PI afforded good stabilities due to the auxiliary material PI.

A novel solid-phase microextraction (SPME) fiber was fabricated by the construction of fluorous metal organic frameworks (FMOF) and a polyimide (PI) composite strategy. As an auxiliary material, PI was expected to help FMOF particles form well-knit film on the surface of stainless steel wire and reinforce the coating, and FMOF was expected to afford a special structure to absorb, extract and enrich. Furthermore, it was explored for the headspace SPME (HS-SPME) of six volatile aromatic compounds (VACs) from water samples followed by gas chromatographic (GC) separation with flame ionization detection. Under the optimized conditions, the fiber afforded wide linear ranges (1–1000 μg L−1), low detection limits (0.15–0.9 μg L−1) and acceptable repeatability (<4.6%) and reproducibility (<7.3%). The FMOF@PI coated fiber not only offered large enhancement factors for benzene (1227) but also exhibited high extraction selectivity for benzene to other benzene homologues, hydrocarbons and phenols; for example, the extraction ratio of benzene to toluene, n-hexane and phenol could be as high as 10.2, 64.1 and 32.3, respectively. Moreover, the FMOF@PI-coated fiber afforded good thermal, water and organic solvent stabilities, and a long lifetime (over 200 times). The developed method was successfully applied to the determination of VACs in wastewater samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1441, 8 April 2016, Pages 16–23
نویسندگان
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