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An "on-off-on" fluorescence probe for glyphosate detection based on Cu2+ modulated g-C3N4 nanosheets
Yingfeng Qin1, Ruiqi Huang1, Gao-Jie Ye1
1Guangxi Key Laboratory of Bioactive Molecules Research and Evaluation, Key Laboratory of Biological Molecular Medicine Research (Guangxi Medical University), Education Department of Guangxi Zhuang Autonomous Region, Pharmaceutical College and School of Basic Medical Sciences, Guangxi Medical University, Nanning, China.
Abstract:
The analysis of glyphosate is essential to agricultural production, environment protection and public health. Herein, we proposed a fast and convenient "on-off-on" fluorescence platform for sensitive detection of glyphosate via Cu2+ modulated g-C3N4 nanosheets. The fluorescence of the system was quenched by Cu2+. With the presence of glyphosate, the fluorescence could be restored due to the formation of Cu2+- glyphosate complex. The proposed method was cost-effective with label-free and enzyme-free. Moreover, it exhibits high sensitivity with a low detection limit of 0.01 μg/ml. Furthermore, the proposed method has been successfully monitored glyphosate in real samples.
