量子点掺杂共价有机框架在分子印迹网络中对壬曲菌素相关杀虫剂的测定。

Determination of nereistoxin-related insecticide via quantum-dots-doped covalent organic frameworks in a molecularly imprinted network.

机构信息

Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), No. 11 Fucheng Road, Beijing, 100048, People's Republic of China.

出版信息

Mikrochim Acta. 2020 Jul 20;187(8):464. doi: 10.1007/s00604-020-04435-z.

DOI:10.1007/s00604-020-04435-z

PMID:32685992

Abstract

Quantum-dots-doped covalent organic frameworks in a molecularly imprinted network (QDs-doped COFs@MIP) were developed for detection of nereistoxin (NRT)-related insecticide in tap water. The preparation of QDs-doped COFs@MIP was easy to accomplish via one-pot synthesis at room temperature. QDs-doped COFs@MIP quenched by targeting thiosultap due to the photoinduced charge transfer. A Brunauer-Emmett-Teller surface area of 186.20 m g and a maximum adsorption capacity of 771 mg g of the QDs-doped COFs@MIP exhibited good selectivity and adsorption capacity. Direct fluorescence determination was established over the range 5-100 μg L (R = 0.9959) with a detection limit of 1.60 μg L. Furthermore, 86.5-106.5% recoveries of spiked tap water were achieved. The determination system was feasible for tracing the NRT-related insecticide with high accuracy and good repeatability and reproducibility. Graphical abstract .

摘要

量子点掺杂共价有机骨架的分子印迹网络（QDs-掺杂 COFs@MIP）被开发用于检测自来水中与神经毒素（NRT）相关的杀虫剂。通过在室温下一锅合成，很容易制备 QDs-掺杂 COFs@MIP。由于光致电荷转移，靶向噻唑硫酮的 QDs-掺杂 COFs@MIP 被猝灭。QDs-掺杂 COFs@MIP 的比表面积为 186.20 m²/g，最大吸附容量为 771 mg/g，表现出良好的选择性和吸附能力。直接荧光测定法的范围为 5-100 μg/L（R=0.9959），检测限为 1.60 μg/L。此外，在自来水中添加的回收率为 86.5-106.5%。该测定系统可用于追踪 NRT 相关杀虫剂，具有高精度、良好的重复性和重现性。