Facile synthesis of magnetic hypercrosslinked polymer for the magnetic solid-phase extraction of benzoylurea insecticides from honey and apple juice samples. (30th November 2022)

• Record Type: Journal Article
• Authors: Li, Min; Liu, Weihua; Meng, Xufeng; Li, Shuofeng; Wang, Qianqian; Guo, Yaxing; Wu, Yuanyuan; Hao, Lin; Yang, Xiumin; Wang, Zhi; Wang, Chun; Wu, Qiuhua
• Is Part Of: Food chemistry. Volume 395(2022)
• Publication Date: 2022-11-30
• Subjects: Benzoylureas insecticide -- Hypercrosslinked polymers -- Magnetic solid phase extraction -- High performance liquid chromatography; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2022.133596
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: A novel magnetic knitting aromatic polymer (M-KAP) was successfully fabricated. M-KAP showed high surface area, abundant porosity and high thermal stability. M-KAP exhibited great affinity and reusability to six benzoylurea insecticides (BUs). M-KAP was applied to sensitively determine BUs in honey and juice samples. Hydrophobic interactions and π-π stacking played important role in the extraction. Abstract: In this work, a novel knitting aromatic polymer (KAP) was fabricated for the first time by knitting ferrocene with 1, 3, 5-tris(bromomethyl)-2, 4, 6-trimethylbenzene via Friedel-Crafts reaction, and then the KAP was magnetically functionalized with Fe3 O4 nanoparticles to produce a magnetic KAP (M-KAP). Combining M-KAP based magnetic solid-phase extraction with high performance liquid chromatography-ultraviolet detection, a simple and sensitive method was developed for simultaneous determination of six benzoylurea insecticides (BUs) in honey and apple juice samples. In the optimized conditions, a good linearity for the BUs existed in the range of 1.67–1000 ng g −1 for honey sample and 0.500–100.0 ng mL −1 for apple juice sample. The limits of detection were 0.500–1.50 ng g −1 and 0.150–0.400 ng mL −1 for honey and apple juice sample, respectively. Satisfactory recoveries were in the range of 85.5–105.5% with RSDs ≤ 8.3%. The developed method demonstrated an excellent practicability for sensitive analysis of the BUs.