Sulfur-doped g-C3N4/BiOBr nanohybrid for sensitive electrochemical monitoring of organophosphorus pesticides in environmental and food samples

The modernistic hi-tech mechanism in Agri-system creates severe complications to health of human beings, affect food chains, soil fertility level and overall environment. From a group of organophosphorus pesticides, Methyl parathion (MP) utilizing excessively by farmers in cultivated plants to avoid insects, pest and for many plant-related disease. Spontaneous usage of MP causes severe risk to human being by consuming those fertilized food products, degradation in quality of underground water and soil. To resolve this issue, we designed a BiOBr material with graphitic carbon nitride (GCN) and furtherly doped GCN with sulfur atom (S) for enhanced performance of BiOBr/S-GCN electrocatalyst. For past years, electrochemical sensor emerging as an effectual sensing technique with low LOD (Limit of Detection) value along with effective sensitivity and selectivity. Our synthesized electrocatalyst detect the residue of MP through electrochemical sensor with 21 nm LOD value having linear range from 0.05 to 464.3 µM with low sensitivity value 0.6985 µA/µM.cm². The good recovery was obtained from real-time analyzing of water, soil, food samples through modified GCE (Glassy Carbon Electrode) with BiOBr/S-GCN for electrochemical detection of MP residues.