College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China.
College of Science, Hebei Agricultural University, Baoding, Hebei, 071001, China.
Mikrochim Acta. 2017 Dec 7;185(1):36. doi: 10.1007/s00604-017-2542-3.
Porphyrin-based porous organic polymers (P-POPs) are amorphous polymers linked by strong covalent bonds between the porphyrin subunits that act as building blocks. The authors describe a magnetic P-POP that possesses high surface area, a highly porous structure, and strong magnetism. The MP-POP was employed as a magnetic sorbent for the extraction of benzoylurea insecticides from cucumber and tomato samples prior to their determination by HPLC. The sorbent has a typical sorption capacity of 1.90-2.00 mg∙g. The method exhibits a good linear range (0.8-160 ng·g), low limits of detection (0.08-0.2 ng·g), and high method recoveries (81.8-103.5%) for cucumber and tomato samples. The MP-POP has different adsorption capabilities for the benzoylurea insecticides, phenylurea herbicides and phenols compounds, and the adsorption mechanism is found to be based on π-stacking, hydrogen-bonding, and hydrophobic interactions. Graphical abstract A novel magnetic porphyrin-based porous organic polymer was fabricated and used as the adsorbent for the efficient extraction of benzoylurea insecticides.
基于卟啉的多孔有机聚合物（P-POPs）是由卟啉亚基之间的强共价键连接而成的无定形聚合物，作为构建块。作者描述了一种具有高表面积、高度多孔结构和强磁性的磁性 P-POP。MP-POP 被用作从黄瓜和番茄样品中提取苯甲酰脲类杀虫剂的磁性吸附剂，然后通过 HPLC 进行测定。该吸附剂的典型吸附容量为 1.90-2.00 mg·g。该方法对黄瓜和番茄样品具有良好的线性范围（0.8-160 ng·g）、低检测限（0.08-0.2 ng·g）和高方法回收率（81.8-103.5%）。MP-POP 对苯甲酰脲类杀虫剂、苯脲类除草剂和酚类化合物具有不同的吸附能力，吸附机制被发现基于π-堆积、氢键和疏水相互作用。
