College of Science, Hebei Agricultural University, Baoding 071001, Hebei, China.
College of Landscape and Travel, Hebei Agricultural University, Baoding 071001, China.
J Chromatogr A. 2018 Oct 19;1572:20-26. doi: 10.1016/j.chroma.2018.08.033. Epub 2018 Aug 18.
A covalent organic framework (named as DAAQ-TFP) was prepared via a fast, environmentally-friendly, and easy-to-perform grinding method with 2,6-diaminoanthraquinone (DAAQ) and 1,3,5-triformylphloroglucinol (TFP) as building blocks. The DAAQ-TFP possesses large surface area, high porosity, good thermochemical stability, abundant O atoms and N-H groups, which render it great potential as sorbent for some compounds. It was employed as adsorbent to extract benzoylurea insecticides (BUs) from environmental water, juice, fruit and vegetables samples, followed by their determination with high-performance liquid chromatography (HPLC). The DAAQ-TFP showed a high adsorption capacity for BUs, and the presented method provided a very low limits of detection and high method recoveries. To explore its application potential and also to clarify the possible adsorption mechanisms of the DAAQ-TFP toward BUs, it was tested to extract different types of compounds, proving that the DAAQ-TFP can serve as a superior adsorbent, and adsorption mechanism is mainly based on the π-π stacking and H bonding.
通过 2,6-二氨基蒽醌（DAAQ）和 1,3,5-均三苯甲酰基间苯三酚（TFP）作为构建块，采用快速、环保且易于执行的研磨方法制备了共价有机骨架（命名为 DAAQ-TFP）。DAAQ-TFP 具有大的表面积、高的孔隙率、良好的热化学稳定性、丰富的 O 原子和 N-H 基团，这使其作为一些化合物的吸附剂具有很大的潜力。它被用作吸附剂，从环境水样、果汁、水果和蔬菜样品中提取苯甲酰脲类杀虫剂（BUs），然后用高效液相色谱（HPLC）进行测定。DAAQ-TFP 对 BUs 具有高的吸附容量，所提出的方法提供了非常低的检测限和高的方法回收率。为了探索其应用潜力并阐明 DAAQ-TFP 对 BUs 的可能吸附机制，对其进行了测试以提取不同类型的化合物，证明 DAAQ-TFP 可以作为一种优异的吸附剂，其吸附机制主要基于π-π 堆积和氢键。
