In situ room-temperature rapidly fabricated imine-linked covalent organic framework coated fibers for efficient solid-phase microextraction of pyrethroids

• Published in: Analytica chimica acta 2021-10, Vol.1181, p.338886-338886, Article 338886
• Main Authors: Yu, Qidong, Ma, Wende, Zhang, Wenmin, Chen, Hui, Ding, Qingqing, Guo, Yuheng, Yang, Jiangfan, Zhang, Lan
• Format: Article
• Language: English
• Subjects: Covalent organic frameworks; Gas chromatography-tandem mass spectrometry; Pyrethroids; Solid phase microextraction
• ISSN: 0003-2670; 1873-4324
• DOI: 10.1016/j.aca.2021.338886

A facile and rapid strategy for preparation of covalent organic framework (COF) coated fibers at ambient temperature is urgently needed for solid-phase microextraction (SPME) technology. In this work, an in situ room-temperature rapid growth strategy was developed to high-efficiently fabricate imine-linked COF (TPB-DVA) coated fibers in as little as 30 min at room temperature, and the thickness of the coating reached 9 μm. The prepared TPB-DVA coated fiber offer high thermal and chemical stability, and outstanding service lifetime. Moreover, we generalize this strategy to other two imine-linked COF (TPB-DMTP and TFPB-TAPB) coated fibers and the fibers were fabricated at room temperature for 3 h and 12 h, respectively, which demonstrate the applicability of this strategy. Subsequently, a SPME-GC-MS/MS analytical method was developed for trace pyrethroids (PYs) detection, which exhibited high enhancement factors (EFs, 2700–13195), wide linear range (0.08–800 ng L−1), low limits of detection (LODs, 0.02–0.20 ng L−1), and good repeatability (RSD ≤ 8.5%, n = 6). Furthermore, the developed analytical method was applied to tea samples and trace PYs (1.31–4.32 ng L−1) were found with satisfactory recovery (80.2–119.8%). The above results demonstrated that the feasibility of the developed strategy for the facile and rapid fabrication of imine-linked COF coated fibers. [Display omitted] •The TPB-DVA coated fiber was fabricated within 30 min at room temperature by rapid in situ strategy.•This strategy demonstrate the general applicability for rapid fabrication of imine-linked COF coated fibers.•The developed SPME-GC-MS/MS analysis method for PYs in tea exhibited high sensitivity and low LOD.