Advanced Electrochemical Monitoring of Carbendazim Fungicide in Foods Using Interfacial Superassembly of NRPC/NiMn Frameworks

• Published in: Biosensors (Basel) Vol. 14; no. 10; p. 474
• Main Authors: Asrafali, Shakila Parveen, Periyasamy, Thirukumaran, Kim, Seong Cheol, Lee, Jaewoong
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 02.10.2024; MDPI
• Subjects: Analysis; Benzimidazoles; Bimetals; Biosensing Techniques; Carbamates - analysis; Carbendazim; Carbon; Carbon - chemistry; Chromatography; Composite materials; Diffusion rate; Electric properties; Electrochemical analysis; Electrochemical reactions; Electrochemical Techniques; Electrochemistry; Electrode materials; Electrodes; Fungicides; Fungicides, Industrial - analysis; Graphene; Identification and classification; Metal oxides; Methods; Nanoparticles; Nitrates; Nitrogen; Nitrogen - chemistry; Pesticides; polybenzoxazine; Porosity; porous carbon; Reproducibility; sensor; Sensors; Synergistic effect; Transition metals; South Korea; Israel; carbendazim; porous carbon; sensor; polybenzoxazine
• ISSN: 2079-6374; 2079-6374
• DOI: 10.3390/bios14100474

A simple, sensitive and reliable sensing system based on nitrogen-rich porous carbon (NRPC) and transition metals, NRPC/Ni, NRPC/Mn and NRPC/NiMn was developed and successfully applied as electrode materials for the quantitative determination of carbendazim (CBZ). The synergistic effect of NRPC and bimetals with acceptable pore structure together with flower-like morphology resulted in producing a highly conductive and interconnected network in NRPC/NiMn@GCE, which significantly enhanced the detection performance of CBZ. The electrochemical behavior investigated by cyclic voltammetry (CV) showed improved CBZ detection for NRPC/NiMn, due to the controlled adsorption/diffusion process of CBZ by the NRPC/NiMn@GCE electrode. The influences of various factors such as pH, NRPC/NiMn concentration, CBZ concentration and scan rate were studied. Under optimal conditions, 0.1 M phosphate-buffered saline (PBS) with a pH of 7.0 containing 30 µg/mL NRPC/NiMn, a favourable linear range detection of CBZ from 5 to 50 µM was obtained. Moreover, a chronoamperometric analysis showed excellent repeatability, reproducibility and anti-interfering ability of the fabricated NRPC/NiMn@GCE sensor. Furthermore, the sensor showed satisfactory results for CBZ detection in real samples with acceptable recoveries of 96.40-104.98% and low RSD values of 0.25-3.45%.