Voltammetric sensor for amaranth at zinc oxide nanoparticle modified carbon paste electrode

In this investigation, the co-precipitation technique was employed to fabricate the ZnO nanoparticles (ZnO/NPs) the samples were distinguished by means of employing XRD (X-ray diffraction), scanning electron microscopy (SEM), and EDS (energy dispersive spectroscopy) techniques. An antimicrobial activity was performed on the synthesized ZnO/NPs against evaluated pathogenic bacterial strains, which shows good significant zone of inhibition. The detailed electrochemical investigations of amaranth were studied, with carbon paste electrode modified at ZnO/NPs using the cyclic voltammetric technique. The modified carbon paste electrode demonstrated a commendable electrocatalytic performance for reducing amaranth. The limit of detection (LOD) and limit of quantification (LOQ) were determined to be 3 mu M and 10.2 mu M, correspondingly. The examination of the interference study yielded consequential outcomes, the modified electrode displays accomplished stability, reusability and reproducibility. Real sample analysis was performed with the recovery rate of about 85 a/o - 95 a/o using various food samples. The same method can also be used for other food additives especially which leads to the carcinogenic.