Details

Autor(en) / Beteiligte

• Wang, Xiao-Xing
• Liu, Lu
• Wang, Xiao-Li
• Xu, Gui-Ju
• Zhao, Ru-Song
• Wang, Ming-Lin
• Lin, Jin-Ming
• Wang, Xia

Titel

High crystalline magnetic covalent organic framework with three-dimensional grapevine structure for ultrasensitive extraction of nitro-polycyclic aromatic hydrocarbons in food and environmental samples

Ist Teil von

• Food chemistry, 2021-11, Vol.361, p.130018-130018, Article 130018

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2021

Quelle

ScienceDirect

Beschreibungen/Notizen

• •A novel high crystalline Fe3O4@TAPT-DMTA-COF with grapevine shape was fabricated.•Structural particularity made this own supermagnetism and lager surface area.•The method was faster and more sensitive for N-PAHs than existing methods.•This MSPE technique was applied to quantify N-PAHs in food and water samples.•Possible adsorption interaction mechanism was elucidated. 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.