Fabrication of magnetic polydopamine@naphthyl microporous organic network nanosphere for efficient extraction of hydroxylated polycyclic aromatic hydrocarbons and p-nitrophenol from wastewater samples

被引:28
作者
He, Xin-Qiao [1 ]
Cui, Yuan-Yuan [1 ]
Zhang, Yan [1 ]
Yang, Cheng-Xiong [1 ]
机构
[1] Nankai Univ, Tianjin Key Lab Biosensing & Mol Recognit, Res Ctr Analyt Sci, Coll Chem, Tianjin 300071, Peoples R China
基金
中国国家自然科学基金;
关键词
Microporous organic network; Polydopamine; Magnetic solid phase extraction; Hydroxylated polycyclic aromatic hydrocarbons; SOLID-PHASE EXTRACTION; LIQUID-LIQUID-EXTRACTION; MONOHYDROXYLATED METABOLITES; HUMAN URINE; REMOVAL; QUANTIFICATION; CHROMATOGRAPHY; NANOPARTICLES; ADSORBENTS; POLYMER;
D O I
10.1016/j.chroma.2021.462347
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Herein, we report the fabrication of a novel, well-defined core-double-shell-structured magnetic Fe3O4@polydopamine@naphthyl microporous organic network (MON), Fe3O4@PDA@NMON, for the efficient magnetic extraction of hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) and p-nitrophenol (p-Npn) from wastewater samples. The hierarchical nanospheres were designed and constructed with the Fe3O4 nanoparticle core, the inner shell of a polydopamine (PDA) layer, and the outer shell of a porous naphthyl MON (NMON) coating, allowing efficient and synergistic extraction of OH-PAHs and p-Npn via hydrophobic, hydrogen bonding, and p-pinteractions. The Fe3O4@PDA@NMON nanospheres were well characterized and employed as an efficient sorbent for magnetic solid-phase extraction (MSPE) coupled with high performance liquid chromatography (HPLC) for analyzing of OH-PAHs and p-Npn. Under optimal conditions, the Fe3O4@PDA@NMON-based-MSPE-HPLC-UV method afforded wide linear range (0.18-500 mu g L-1), low limits of detection (0.070 mu g L-1 for p-Npn, 0.090 mu g L-1 for 2-OH-Nap, 0.090 mu g L-1 for 9-OH-Fluo and 0.055 mu g L-1 for 9-OH-Phe, respectively), large enrichment factors (92.6-98.4), good precisions (intra-day and inter-day relative standard deviations (RSDs); <6.4%, n=6) and less consumption of the adsorbent. Furthermore, trace OH-PAHs and p-Npn with concentrations of 0.29-0.80 mu g L-1 were successfully detected in various wastewater samples. Fe3O4@PDA@NMON also functioned as a good adsorbent to enrich a wide scope of trace contaminants containing hydrogen bonding sites and aromatic structures, highlighting the potential of functional MONs in sample pretreatment. (C) 2021 Elsevier B.V. All rights reserved.
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页数:10
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