College of Chemistry and Life Science, Changchun University of Technology, Yan'an Street 2055, Changchun 130012, PR China.
Sinovac Biotech Ltd, Shangdi West Road 39, Beijing 100085, PR China.
Food Chem. 2024 Aug 30;450:139298. doi: 10.1016/j.foodchem.2024.139298. Epub 2024 Apr 10.
A convenient, efficient, and green dispersive liquid-liquid microextraction based on the in situ formation of solidified supramolecular solvents combined with high performance liquid chromatography was developed for the determination of four phenylurea herbicides in liquid samples, including monuron, monolinuron, isoproturon, and chlortoluron. Herein, a novel supramolecular solvent was prepared by the in situ reaction of [P]Br and NHPF, which had the advantages of low melting point, high density, and good dispersibility. In addition, the microscopic morphology and physical properties of supramolecular solvent were characterized, and the extraction conditions were optimized. The results showed that the analytes had good linearity (R > 0.9998) within the linear range. The limits of detection and quantification for the four phenylurea herbicides were in the range of 0.13-0.19 μg L and 0.45-0.65 μg L, respectively. The prepared supramolecular solvent is suitable for the efficient extraction of phenylurea herbicides in water, fruit juice, and milk.
建立了一种基于原位形成的固态超分子溶剂的新型、高效、绿色的分散液液微萃取方法，并结合高效液相色谱法，用于测定液体样品中的四种苯脲类除草剂，包括单氰胺、敌草隆、异丙隆和绿麦隆。本文通过原位反应[P]Br 和 NHPF 制备了一种新型超分子溶剂，该溶剂具有熔点低、密度高、分散性好等优点。此外，对超分子溶剂的微观形态和物理性质进行了表征，并优化了萃取条件。结果表明，在一定线性范围内，四种苯脲类除草剂均具有良好的线性关系（R > 0.9998）。四种苯脲类除草剂的检出限和定量限在 0.13-0.19μg/L 和 0.45-0.65μg/L 范围内。所制备的超分子溶剂适用于水、果汁和牛奶中苯脲类除草剂的有效萃取。
