| Title: | A polythiophene/UiO-66 composite coating for extraction of volatile organic compounds migrated from ion-exchange resins prior to their determination by gas chromatography |
| Author(s): | Zhang J; Zhang B; Dang X; Song Z; Hu Y; Chen H; |
| Address: | "Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China. Electronic address: dangxueping@hubu.edu.cn. School of Chemistry, Sun Yat-sen University, Guangzhou 510275, PR China. Electronic address: ceshyl@mail.sysu.edu.cn" |
| DOI: | 10.1016/j.chroma.2020.461627 |
| ISSN/ISBN: | 1873-3778 (Electronic) 0021-9673 (Linking) |
| Abstract: | "A Poly (3,4-ethylenedioxothiophene) (PEDOT)/UiO-66 composite was electrodeposited on an etched stainless-steel wire as head-space solid-phase microextraction (HS-SPME) coating. A robust, well controlled thickness, and uniform coating of metal organic framework composites can be realized by the electrodeposited strategy. The incorporated UiO-66 not only enhanced the uniformity and stability of the composite coating, but also effectively decreased the stacking phenomenon of PEDOT and improved its extraction efficiency, which was over 100 times higher than that of the PEDOT coating without UiO-66. The composite coating was used to enrich seven types of volatile organic compounds (VOCs) in ion-exchange resins, including methyl cyclohexane, benzene, toluene, ortho-xylene, styrene, para-xylene and divinyl-benzene. The results of adsorption isotherm analysis showed that pi stacking effect played dominant role between the composite coating and VOCs in the extraction process. The composite coating was characterized by scanning electron microscopy, X-ray diffraction, Fourier transform infrared and thermogravimetric analysis, respectively. A determination method for seven kinds of VOCs was established by HS-SPME coupled with gas chromatography-flame ionization detection (GC-FID). Under the optimal experimental conditions, the detection linear range (LRs) was 0.09-100 ng mL(-1), and the detection limit (LODs) was 0.03-0.06 ng mL(-1) (S/N = 3). The method was applied for the migration detection of VOCs in four types of ion-exchange resin, which showed satisfactory recovery (84.5-117.2%)" |
| Keywords: | "Adsorption Benzene/analysis/isolation & purification Chemistry Techniques, Analytical/*methods Chromatography, Gas Flame Ionization Ion Exchange Resins/chemistry Limit of Detection Metal-Organic Frameworks/*chemistry Organometallic Compounds/*chemistry Ph;" |
| Notes: | "MedlineZhang, Jiayang Zhang, Birong Dang, Xueping Song, Zhiyong Hu, Yuling Chen, Huaixia eng Netherlands 2020/11/01 J Chromatogr A. 2020 Dec 6; 1633:461627. doi: 10.1016/j.chroma.2020.461627. Epub 2020 Oct 14" |
