In this study, an environmentally friendly, highly selective, and sensitive electrochemical sensor was developed for the simultaneous determination of tinidazole (TIN) and chloramphenicol (CAP) using a choline chloride-modified glassy carbon electrode (ChCl/GCE). Electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), scanning electron microscopy (SEM), and Fourier transform infrared (FT-IR) spectrometry techniques were utilized for electrochemical and morphological characterization. The proposed sensor showed an excellent performance with a wide linear range of 0.010–170 μM and 0.005–300 μM for TIN and CAP, respectively. The limit of detection (LOD) and quantification (LOQ) were 0.90 nM and 3.0 nM for TIN and 0.27 nM and 0.89 nM for CAP, respectively. ChCl/GCE demonstrated remarkable selectivity over potentially interfering species, including antibiotics, organic and inorganic substances, as well as exceptional repeatability, reproducibility, and long-term stability. The sensor was successfully applied to simultaneously determine TIN and CAP in food samples (eggs, honey, and milk) with acceptable recovery values of 93.0–104 % and relative standard deviations (RSD) below 5 %. Therefore, the developed electrochemical sensor is an excellent alternative for simultaneously determining TIN and CAP in food samples. 

Highly sensitive and selective electrochemical sensor for the simultaneous determination of tinidazole and chloramphenicol in food samples (egg, honey and milk)

Development of a novel sensor based on Bi2O3 and carbonized UIO-66-NH2 nanocomposite for efficient detection of Pb(Ⅱ) ion in water environment

Recent developments on graphene and its derivatives based electrochemical sensors for determinations of food contaminants.

A simple one-step synthesis of Fe3O4/N-rGO nanocomposite for sensitive electrochemical detection of chloramphenicol

Amphenicols are broad-spectrum antibiotics. Despite their benefits, they also present toxic effects and therefore their presence in animal-derived food was regulated. Various analytical methods have been reported for their trace analysis in food and environmental samples, as well as in the quality control of pharmaceuticals. Among these methods, the electrochemical ones are simpler, more rapid and cost-effective. The working electrode is the core of any electroanalytical method because the selectivity and sensitivity of the determination depend on its surface activity. Therefore, this review offers a comprehensive overview of the electrochemical sensors and methods along with their performance characteristics for chloramphenicol, thiamphenicol and florfenicol detection, with a focus on those reported in the last five years. Electrode modification procedures and analytical applications of the recently described devices for amphenicol electroanalysis in various matrices (pharmaceuticals, environmental, foods), together with the sample preparation methods were discussed. Therefore, the information and the concepts contained in this review can be a starting point for future new findings in the field of amphenicol electrochemical detection.

https://www.mdpi.com/2072-666X/13/5/677/pdf?version=1651224181

Past and Present of Electrochemical Sensors and Methods for Amphenicol Antibiotic Analysis

Highly efficient detection of chloramphenicol in water using Ag and TiO2 nanoparticles modified laser-induced graphene electrode

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Highly efficient detection of chloramphenicol in water using Ag and TiO2 nanoparticles modified laser-induced graphene electrode