A hybrid monolithic column based on flower-shaped zeolitic imidazolate framework for efficient capillary microextraction of brominated flame retardants
| Autor: | Xinzhen Du, Fangbing Wang, Hong Ji, Xiaoquan Lu, Xuemei Wang, Yacong Liu, Xinglan Cui |
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| Rok vydání: | 2021 |
| Předmět: |
Detection limit
Materials science Monolithic HPLC column Scanning electron microscope Capillary action Extraction (chemistry) 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Chemical engineering X-ray photoelectron spectroscopy 0210 nano-technology Spectroscopy Zeolitic imidazolate framework |
| Zdroj: | Chinese Chemical Letters. 32:3199-3201 |
| ISSN: | 1001-8417 |
| Popis: | A novel flower-shaped zeolitic imidazolate framework (ZIF) doped organic-inorganic hybrid monolithic column (ZIF-HMC) was prepared by a simple sol-gel “one-step” method and utilized for efficient capillary microextraction (CME) of four brominated flame retardants. The prepared monolithic was characterized by Fourier transform infrared, scanning electron microscopy, X-ray photoelectron spectroscopy, energy disperse spectroscopy, and N2 adsorption-desorption. The parameters of CME were optimized by orthogonal array design. Under the optimal conditions, the ZIF-HMC showed excellent extraction efficiency, the limit of detection (LODs) and the limit of quantification (LOQs) were in the range of 0.52∼3.1 μg/L and 1.7∼10 μg/L, respectively, and the proposed method demonstrated good recovery (88.8%–116.6%) with the RSD less than 13.6% and a reusability of at least 30 times. The ZIF-HMC possessed great potential for separating organic pollutants and the strategy used here could be extended to prepare other derivatized HMC functionalized monoliths. |
| Databáze: | OpenAIRE |
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