A dual-emission carbon dots-based nonenzymatic fluorescent sensing platform for simultaneous detection of parathion-methyl and glyphosate

Yangyu Yang; Xia Tong; Yuxia Chen; Rongrong Zhou; Guihan Cai; Tongtao Wang; Shuihan Zhang; Shuyun Shi; Ying Guo

doi:10.1016/j.foodchem.2022.134346

A dual-emission carbon dots-based nonenzymatic fluorescent sensing platform for simultaneous detection of parathion-methyl and glyphosate

Food Chem. 2023 Mar 1:403:134346. doi: 10.1016/j.foodchem.2022.134346. Epub 2022 Sep 21.

Authors

Yangyu Yang¹, Xia Tong², Yuxia Chen², Rongrong Zhou³, Guihan Cai², Tongtao Wang², Shuihan Zhang⁴, Shuyun Shi⁵, Ying Guo⁶

Affiliations

¹ Institute of Chinese Materia Medica, Hunan University of Chinese Medicine, Changsha 410013, Hunan, China; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China.
² College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China.
³ Institute of Chinese Materia Medica, Hunan University of Chinese Medicine, Changsha 410013, Hunan, China; Central Laboratory, The Affiliated Hospital of Hunan Academy of Chinese Medicine, Changsha 410000, Hunan, China.
⁴ Institute of Chinese Materia Medica, Hunan University of Chinese Medicine, Changsha 410013, Hunan, China. Electronic address: zhangshuihan0220@126.com.
⁵ College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China; Department of Clinical Pharmacology, Xiangya Hospital, Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha 410078, Hunan, China. Electronic address: shuyshi@csu.edu.com.
⁶ Department of Clinical Pharmacology, Xiangya Hospital, Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha 410078, Hunan, China. Electronic address: guoying881212@csu.edu.cn.

PMID: 36162271
DOI: 10.1016/j.foodchem.2022.134346

Abstract

Simultaneous and high-performance detection of pesticides is still a considerable challenge and urgent need. Herein, a dual-emission carbon dots (CDs)-based nonenzymatic fluorescent sensing platform has been developed, which shows excellent sensitivity and selectivity in simultaneously detecting parathion-methyl (MP) and glyphosate. CDs with emissions at 440 nm (bCDs) and 660 nm (rCDs) were prepared by hydrothermal treatment of mulberry leaves and sodium hydroxide. bCDs response to hydrolyzed MP via inner filter effect, while rCDs sense glyphosate with the aid of Cu²⁺ by static quenching effect. Excellent linear correlations were found for MP (0.3-65.0 μM) and glyphosate (1.0-110.0 μM) with limits of detection at 0.14 and 0.60 μM. Notably, the presented dual-channel strategy was successfully applied in simultaneously detecting MP and glyphosate in food/herbal samples with acceptable recoveries, good precision, and high selectivity. Moreover, an ORlogicgatewas achieved for estimating food, herbal, or environmental safety.

Keywords: Carbon dots; Dual-channel mode; Glyphosate; Molecular logic gate; Non-enzyme detection; Parathion-methyl.

MeSH terms

Carbon
Fluorescent Dyes
Glyphosate
Limit of Detection
Methyl Parathion*
Quantum Dots*
Spectrometry, Fluorescence

Substances

Carbon
Methyl Parathion
Fluorescent Dyes