Li Huiling, Tian Li, Yang Shuning, Li Chao, Li Ruidan, Song Yujia, Guo Yanjia, Li Xuwen
College of Chemistry, Changchun Normal University, Changchun 130032, People's Republic of China.
College of Chemistry, Changchun Normal University, Changchun 130032, People's Republic of China.
Food Chem. 2025 Apr 1;470:142726. doi: 10.1016/j.foodchem.2024.142726. Epub 2025 Jan 2.
To sensitively monitor trace-level of malathion (MAT) in vegetable samples, an ultrasensitive solid-state electrochemiluminescence (ECL) sensor was proposed based on TiO@CdSe and Ru(bpy)@Ag NPs. In this system, the introduction of Ag NPs enhanced the initial ECL signal of Ru(bpy)- tripropylamine (TPrA). When TiO@CdSe was introduced into the system, the ECL signal was further enhanced, which may be due to the synergistic effect of the two complexes. Based on the fact that the addition of MAT causes ECL strength to decrease, a ECL sensor for the ultrasensitive trace detection of MAT has been successfully established. Under the optimized conditions, a wide liner detection range of MAT concentrations from 4.0 × 10 to 4.0 × 10 mol L and a low detection limit (S/N = 3) of 1.3 × 10 mol L were obtained. The ECL sensor has been applied to the detection of vegetable samples and satisfactory results were obtained.
为了灵敏地监测蔬菜样品中痕量的马拉硫磷（MAT），基于TiO@CdSe和Ru(bpy)@Ag纳米粒子构建了一种超灵敏的固态电化学发光（ECL）传感器。在该体系中，Ag纳米粒子的引入增强了Ru(bpy)-三丙胺（TPrA）的初始ECL信号。当TiO@CdSe引入该体系时，ECL信号进一步增强，这可能是由于两种配合物的协同作用。基于添加MAT会导致ECL强度降低这一事实，成功构建了用于超灵敏痕量检测MAT的ECL传感器。在优化条件下，获得了MAT浓度从4.0×10到4.0×10 mol/L的宽线性检测范围以及1.3×10 mol/L的低检测限（S/N = 3）。该ECL传感器已应用于蔬菜样品的检测并获得了满意的结果。
