The fabrication of a covalent triazine-based organic framework for the solid-phase extraction of fourteen kinds of sulfonamides from meat samples |
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| Authors: | Guanhua Wang Zhikai Hong Yongqian Lei |
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| Institution: | College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642 Guangdong PR China, +86-02085280234 ; Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Engineering Technology Research Center of On-line Monitoring of Water Environmental Pollution, Guangdong Institute of Analysis, Guangzhou 510070 PR China, +86-02037656885 |
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| Abstract: | A novel covalent triazine-based organic framework (CTF), SCAU-2, was fabricated and used as an adsorbent for the solid-phase extraction of fourteen kinds of sulfonamides (SAs) from meat. Another CTF, SCAU-1, was adopted as a comparison material, as it has a similar motif. A series of structural characterization steps was carried out on the synthesized materials and several parameters were investigated during the extraction process, including the amount of adsorbent, the dilution ratio, the pH of the sample, and the washing and elution solvents. After detection with UHPLC-Q/TOF-MS/MS, the results revealed that SCAU-2 showed high extraction efficiencies towards the selected SAs. The LOD values are from 0.05 to 0.54 ng g−1, and the recoveries are from 84.1% to 91.9%, with RSDs ranging from 3.2% to 4.8% for SCAU-2 when spiked at 50 ng g−1. The results demonstrated that the proposed method has good applicability for the determination of SAs in complicated samples.A novel triazine-based CTF and a comparison CTF were synthesized; both CTFs showed excellent extraction efficiencies towards fourteen kinds of sulfonamides in meat and could be promising materials for food sample pretreatment. |
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