College of Life Sciences, Yantai University, Yantai 264005, China.
College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
Food Chem. 2024 Apr 16;438:137985. doi: 10.1016/j.foodchem.2023.137985. Epub 2023 Nov 13.
In this work, europium ion-doped gadolinium trioxide nanocrystals (GdO:Eu NCs) were successfully synthesized and applied to construct an electrochemiluminescence (ECL) sensor. Compared with pure GdO, the doping of Eu ions caused enhanced ECL intensity and more stable signals. Based on the excellent ECL performance of GdO:Eu NCs, we constructed a new ECL sensing platform for the detection of organophosphorus pesticides (OPs). The ECL sensor showed a good linear relationship in the concentration range of 1 nM to 1 pM, with a limit of detection of 0.12 pM (S/N = 3) for dichlorvos (DDVP). In addition, the constructed ECL sensor was applied for the detection of DDVP in vegetable samples, and good recoveries were obtained. The results indicated that the ECL sensor exhibited fantastic performance properties and had good application prospects in OPs detection.
在这项工作中，成功合成了掺铕氧化钆纳米晶（GdO:Eu NCs），并将其应用于构建电化学发光（ECL）传感器。与纯 GdO 相比，Eu 离子的掺杂导致 ECL 强度增强和信号更稳定。基于 GdO:Eu NCs 的优异 ECL 性能，我们构建了一种新的用于检测有机磷农药（OPs）的 ECL 传感平台。该 ECL 传感器在 1 nM 至 1 pM 的浓度范围内呈现出良好的线性关系，对敌敌畏（DDVP）的检测限为 0.12 pM（S/N = 3）。此外，构建的 ECL 传感器还用于蔬菜样品中敌敌畏的检测，获得了良好的回收率。结果表明，该 ECL 传感器表现出优异的性能，在 OPs 检测方面具有良好的应用前景。
