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rGO/HfO nanocomposite-enabled electrochemical sensor for high-performance pesticide detection.
Talanta
January 2025
Department of Chemical and Biomolecular Engineering, University of Connecticut, CT, 06269, United States. Electronic address:
This study applies a periodic table-guided approach to select and investigate hafnium oxide (HfO), in conjunction with reduced graphene oxide (rGO), for the electrochemical determination of methyl parathion (MP), an organophosphate insecticide. MP poses significant ecological and health risks due to its high toxicity, and despite bans, illegal use has been reported, especially in the global south. To address these challenges, an electrode modified with a nanocomposite of rGO/HfO was first constructed for MP detection.
View Article and Find Full Text PDFConstruction of an electrochemical sensor for the detection of methyl parathion with three-dimensional graphdiyne-carbon nanotubes.
Mikrochim Acta
January 2025
CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
To enhance the application performance of graphdiyne (GDY) in electrochemical sensing, carbon nanotubes (CNTs) were grown in situ to construct three-dimensional nanoarchitectures of GDY-CNTs composites. GDY-CNTs showed superior electrochemical properties and detection response to MP when compared with GDY, as the in situ growth of CNTs significantly increased the electrode surface area and enhanced the electron transfer process. GDY-CNTs were successfully used to construct electrochemical sensors for methyl parathion (MP).
View Article and Find Full Text PDFBiodegradation of Organophosphorus Insecticides by Bacillus Species Isolated From Soil.
J Basic Microbiol
December 2024
Unit of Vector Biology and Control, ICMR-Vector Control Research Centre, Pondicherry, India.
This study investigates the biodegradation of methyl parathion, an organophosphate pesticide used in paddy fields. Microbial degradation transforms toxic pesticides into less harmful compounds, influenced by the microbial community in the soil. To isolate different microbial colonies, soil samples from an organophosphorus-treated groundnut field were plated on nutrient agar and MSM with 1% glucose and 0.
View Article and Find Full Text PDFDual-mode colorimetric and chemiluminescence aptasensor for organophosphorus pesticides detection using aptamer-regulated peroxidase-like activity of TA-Cu.
Talanta
April 2025
Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, No. 29 of 13th Street, TEDA, Tianjin, 300457, PR China. Electronic address:
The residues of organophosphorus pesticides (OPs) in food pose a huge threat to human health. Therefore, the development of detection methods with simple design and high sensitivity is urgently needed. Here, a colorimetric/chemiluminescence (CL) dual-mode aptasensor strategy with high selectivity and sensitivity for detecting Parathion-methyl (PM) was designed based on aptamer-regulated nanozyme activity.
View Article and Find Full Text PDFFacile green preparation of highly fluorescent nitrogen-doped carbon dots from bagasse for sensitive methyl parathion detection.
Food Chem
February 2025
Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, PR China.
In this work, a high sensitivity fluorescence sensor system utilizing nitrogen-doped carbon dots (N-CDs) from bagasse was studied. A method was developed to examine methyl parathion (MP) via alkali hydrolysis. N-CDs were prepared via hydrothermal method from biomass bagasse.
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