化学
萃取(化学)
芘
共价有机骨架
检出限
荧蒽
硝基
作者
Xiao-Xing Wang,Lu Liu,Wang Xiaoli,Guiju Xu,Ru-Song Zhao,Minglin Wang,Jin-Ming Lin,Xia Wang
出处
期刊:Food Chemistry
[Elsevier]
日期:2021-11-01
卷期号:361: 130018-130018
被引量:2
标识
DOI:10.1016/j.foodchem.2021.130018
摘要
Abstract Developing and establishing an efficient pre-treatment approach for the precise extraction of nitrated-polycyclic aromatic hydrocarbons (N-PAHs) from real-life samples is critical for ensuring their safety. In this study, a novel crystalline magnetic covalent organic framework with a grapevine structure not a single core–shell, Fe3O4@TAPT-DMTA-COF, was fabricated via chemical bonding. Unchanging the reticulated structure and high crystallinity of TAPT-DMTA-COF, the combination made this material possess not only simple operation via magnetic decantation but also remarkable chemical stability. Fe3O4@TAPT-DMTA-COF had a large surface area (1578.45 m2/g), and rich electronegative triazine-groups, which makes it become a superior magnetic enrichment material for trace N-PAHs. For N-PAHs analysis, low limits of detection (LODs) (1.43–17.24 ng/L), excellent relative standard deviations (RSDs ≤ 11.52%), and wide linearity (10–5000 ng/L) were obtained. Real-life applications based on this composite have been successfully explored by capturing the N-PAHs emitted from food and environmental samples.
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