Abstract
In this study, an electrochemiluminescence detection system for the sensitive detection of carbaryl was constructed based on the dual identification of Eu@MOF253, which has a recognition effect on carbaryl, and the electrochemiluminescence system of Ru(bpy)32+/S2O82-, which can react with carbaryl in a redox reaction. This method not only overcame the weakness of the electrochemiluminescence instability of the Ru(bpy)32+/S2O82- system but also changed the sensitivity of the sensing detection system to the target by adjusting the concentration of Ru(bpy)32+ and then proposed a detection strategy with a controllable detection range. After analyzing the electrochemiluminescence signal change mechanism of this system and optimizing the detection conditions, it was concluded that the strategy has good linear detection of carbaryl in the range of 1-1000 and 0.02-0.3 μg L-1, and the detection limits were 0.058 and 0.014 μg L-1. Finally, the strategy was also successfully applied to the detection of actual samples.
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