Novel Fe3O4@metal-organic framework@polymer core-shell-shell nanospheres for fast extraction and specific preconcentration of nine organophosphorus pesticides from complex matrices
文献类型： 外文期刊
第一作者： Wan, Mengfei
作者： Wan, Mengfei;Shao, Yong;Zheng, Lufei;Jin, Maojun;She, Yongxin;Cao, Liping;Jin, Fen;Wang, Shanshan;Wang, Jing;Wan, Mengfei;Liu, Zhongdong;Xiang, Fachun;Guan, Denggao;Chen, Rui;Wu, Yijun;Abd El-Aty, A. M.;Abd El-Aty, A. M.;Abd El-Aty, A. M.
作者机构：
关键词： Metal-organic frameworks; Polymer; Magnetic solid-phase extraction; Organophosphorus pesticides; Environmental water; Food samples; Analysis
期刊名称：FOOD CHEMISTRY （ 影响因子：9.231； 五年影响因子：8.795 ）
ISSN： 0308-8146
年卷期： 2021 年 365 卷
页码：
收录情况： SCI
摘要： Herein, a novel core-shell-shell magnetic nanosphere denoted as Fe3O4@ZIF-8@polymer was fabricated by sequential in situ self-assembly and precipitation polymerization for effective magnetic solid-phase extraction of nine organophosphorus pesticides (OPPs) from river water, pear, and cabbage samples. The integrated Fe3O4@ZIF-8@polymer featured convenient magnetic separation property and excellent multi-target binding ability. More importantly, the functional polymer coating greatly improved the extraction performance of Fe3O4@ZIF-8 for OPPs, thus facilitating the simultaneous determination of trace OPP residues in real samples. The developed MPSE-LC-MS/MS method exhibited good linearity (R-2 >= 0.9991) over the concentration range of 0.2-200 mu g L-1, low limits of detection of 0.0002-0.005 mu g L-1 for river water and 0.006-0.185 mu g kg(-1) for pear and cabbage, satisfactory precision with relative standard deviations <= 9.7% and accuracy with recoveries of 69.5-94.3%. These results highlight that the combination of polymers with MOFs has great potential to fabricate excellent adsorbents for high-throughput analysis of various contaminants in complex matrices.
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