AUTHOR=Qin Yingfeng , Huang Ruiqi , Ye Gao-Jie 

TITLE=An “on-off-on” fluorescence probe for glyphosate detection based on Cu2+ modulated g-C3N4 nanosheets

JOURNAL=Frontiers in Chemistry

VOLUME=10

YEAR=2022

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.1036683

DOI=10.3389/fchem.2022.1036683

ISSN=2296-2646

ABSTRACT=<p>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 <italic>via</italic> Cu<sup>2+</sup> modulated g-C<sub>3</sub>N<sub>4</sub> nanosheets. The fluorescence of the system was quenched by Cu<sup>2+</sup>. With the presence of glyphosate, the fluorescence could be restored due to the formation of Cu<sup>2+</sup>- 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.</p>