Sulfonic acid functionalized hierarchical porous covalent organic frameworks as a SALDI-TOF MS matrix for effective extraction and detection of paraquat and diquat

Wei Tan,Xianyan Xu,Yuanxia Lv, Wenjuan Lei,Kun Hu,Fanggui Ye,Shulin Zhao

Journal of Colloid and Interface Science（2021）

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摘要

Sulfonic acid functionalized hierarchical porous covalent organic frameworks (H-COF-SO3H) synthesized by defect-structure and post-synthesis modification method could be used as adsorbent and matrix for detecting quaternary ammonium herbicides paraquat and diquat in food samples by surface-assisted laser desorption/ionization time-of-flight mass spectrometry (SALDI-TOF MS).

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关键词

Sulfonic acid functionalized hierarchical porous COFs,SALDI-TOF MS,DFT calculation,Quaternary ammonium herbicides,Food samples

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