title: Magnetic dummy molecularly imprinted polymers based on multi-walled carbon nanotubes for rapid selective solid-phase extraction of 4-nonylphenol in aqueous samples.
abstract: In this paper, a highly selective sample clean-up procedure combining magnetic dummy molecular imprinting with solid-phase extraction was developed for rapid separation and determination of 4-nonylphenol (NP) in the environmental water samples. The magnetic dummy molecularly imprinted polymers (mag-DMIPs) based on multi-walled carbon nanotubes were successfully synthesized with a surface molecular imprinting technique using 4-tert-octylphenol as the dummy template and tetraethylorthosilicate as the cross-linker. The maximum adsorption capacity of the mag-DMIPs for NP was 52.4 mg g(-1) and it took about 20 min to achieve the adsorption equilibrium. The mag-DMIPs exhibited the specific selective adsorption toward NP. Coupled with high performance liquid chromatography analysis, the mag-DMIPs were used to extract solid-phase and detect NP in real water samples successfully with the recoveries of 88.6-98.1%.
authors: College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China.
authors: Wei
authors: W
authors: Rao
authors: College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China.
authors: Rong
authors: R
authors: Cai
authors: College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China.
authors: Yuli
authors: Y
authors: Yin
authors: College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China.
authors: Fang
authors: F
authors: Long
authors: College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China. Electronic address: zhaohuizhang77@163.com.
authors: Zhaohui
authors: Z
authors: Zhang
mesh_terms: D000327:Adsorption; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D008280:Magnetics; D046529:Microscopy, Electron, Transmission; D054802:Molecular Imprinting; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D010636:Phenols / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D011108:Polymers / Q000737:chemistry*; D011891:Rain / Q000737:chemistry; D015203:Reproducibility of Results; D045483:Rivers / Q000737:chemistry; D052616:Solid Phase Extraction / Q000379:methods*; D017550:Spectroscopy, Fourier Transform Infrared; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D014881:Water Supply / Q000032:analysis
chemical_list: D037742:Nanotubes, Carbon; D010636:Phenols; D011108:Polymers; D014874:Water Pollutants, Chemical; C041594:4-nonylphenol; C105260:4-tert-octylphenol
keywords: 4-nonylphenol; Dummy template; Magnetic molecularly imprinted polymers; Solid-phase extraction