ZIF-67 based CoS2 self-assembled on graphitic carbon nitride microtubular for sensitive electrochemical detection of paraquat in fruits

Yuan, Chenghu; Tang, Cui; Zhan, Xuejia; Zhou, Menglin; Zhang, Lei; Chen, Wen-Tong; Abdukayum, Abdukader; Hu, Guangzhi

doi:10.1016/j.jhazmat.2024.133715

Journal of Hazardous Materials

2024

DOI: 10.1016/j.jhazmat.2024.133715

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ZIF-67 based CoS2 self-assembled on graphitic carbon nitride microtubular for sensitive electrochemical detection of paraquat in fruits

Chenghu Yuan,

Cui Tang,

Xuejia Zhan

et al.

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2024

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Cited by 3 publications

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Printed strips coated with a reticular organic framework for Non-Enzymatic detection of pesticides in the urine of rural workers

Martins,

Henrique,

Birolli

et al. 2024

Chemical Engineering Journal

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Printed strips coated with a reticular organic framework for Non-Enzymatic detection of pesticides in the urine of rural workers

Martins,

Henrique,

Birolli

et al. 2024

Chemical Engineering Journal

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Cobalt-copper bimetallic selenides embedded in nitrogen-doped porous carbon nanocubes for diclofenac electrochemical sensing

Dong,

Li,

et al. 2024

Journal of Hazardous Materials

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Low-Volume Electrochemical Sensor Platform for Direct Detection of Paraquat in Drinking Water

Poudyal,

Samson,

Dhamu

et al. 2024

Electrochem

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Direct testing of pesticide contaminants in drinking water is a challenge. Portable and sensitive sensor platforms are desirable to test water contaminants directly at farm and consumer levels. In this study, we have demonstrated the feasibility of an electrochemical sensor for the direct detection of paraquat (PQ) in drinking water samples. An immunoassay-based sensing platform was fabricated using PQ-specific antibody immobilized on the surface of the electrochemically reduced graphene oxide (rGO) modified screen-printed carbon electrode (rGO-SPCE). Using non-faradaic electrochemical impedance spectroscopy (EIS) as a detection tool, the sensor platform demonstrated a dynamic response for PQ concentration in drinking water ranging from 0.05 ng/mL to 72.9 ng/mL (0.19 to 243.8 nM), with a coefficient of determination (r2) of 0.997 and a limit of detection of 0.05 ng/mL (0.19 nM). Percentage recovery within ±20% error was obtained, and the sensor cross-reactivity test showed a selective response against glyphosate antigen. With the flexibility to use single-frequency EIS and low sample volume, the developed sensor demonstrated testing in water samples directly without any sample pre-processing. This low-volume electroanalytical sensor platforms can be translated into portable testing tools for the detection of various water contaminants.

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ZIF-67 based CoS2 self-assembled on graphitic carbon nitride microtubular for sensitive electrochemical detection of paraquat in fruits

Cited by 3 publications

References 49 publications

Printed strips coated with a reticular organic framework for Non-Enzymatic detection of pesticides in the urine of rural workers

Printed strips coated with a reticular organic framework for Non-Enzymatic detection of pesticides in the urine of rural workers

Cobalt-copper bimetallic selenides embedded in nitrogen-doped porous carbon nanocubes for diclofenac electrochemical sensing

Low-Volume Electrochemical Sensor Platform for Direct Detection of Paraquat in Drinking Water

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