Research and Publications
Research and Publications
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Simultaneous determination of chloramphenicol and riboflavin using a calcined NiCuO-C/MWCNT composite modified electrode in various food samples
Simultaneous determination of chloramphenicol and riboflavin using a calcined NiCuO-C/MWCNT composite modified electrode in various food samples
Food Chemistry (Impact Factor: 9.8).
Food Chemistry (Impact Factor: 9.8).
https://doi.org/10.1016/j.foodchem.2026.148554
Reliable monitoring of chloramphenicol (CAP) and riboflavin (RBF) is essential due to their widespread use and associated health risks in food and pharmaceuticals. In this study, a novel electrochemical sensor based on a calcined nickel copper oxide (NiCuO-C) and multi-walled carbon nanotube (MWCNT) composite was developed for simultaneous detection of CAP and RBF. The composite was synthesized via a hydrothermal method followed by calcination, enhancing crystallinity and electrochemical activity. Structural and morphological analyses confirmed successful integration of NiCuO and MWCNTs. Electrochemical impedance spectroscopy (EIS) revealed reduced charge transfer resistance (Rct), while cyclic voltammetry (CV) indicated increased electroactive surface area, confirming improved interfacial electron transfer kinetics. Differential pulse voltammetry (DPV) exhibited distinct redox signals with wide linear ranges (2–100 μM for CAP, 0.05–5 μM for RBF) and low detection limits (0.593 μM for CAP, 0.023 μM for RBF). Real sample analysis showed high recovery rates, confirming practical applicability.
Sustainable CaZrO3@CB nanocomposite for sensitive and reliable electrochemical sensing of rutin in complex matrices.
Sustainable CaZrO3@CB nanocomposite for sensitive and reliable electrochemical sensing of rutin in complex matrices.
Journal of Environmental Chemical Engineering (Impact Factor: 7.4).
Journal of Environmental Chemical Engineering (Impact Factor: 7.4).
This study develops a high-performance electrochemical sensor using a CaZrO3@CB composite for the sensitive detection of rutin. The composite, synthesized via a hydrothermal method, enhances electron transfer and catalytic efficiency. The CaZrO3@CB-modified GCE achieves a broad detection range (20–480 μM) with an ultra-low detection limit (2.5 nM). The sensor demonstrates excellent stability (94.5% response retention after 30 days), high repeatability (RSD: 1.2%), and strong interference resistance. Real-sample validation in apple juice and human urine shows high recovery rates (95.0–98.5%), confirming its practical utility in food and biological analysis.
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