A novel electrochemical sensor based on B doped CeO2 nanocubes modified glassy carbon microspheres paste electrode for individual and simultaneous determination of xanthine and hypoxanthine

A novel boron doped CeO2 nanocubes modified glassy carbon microspheres paste electrode was successfully fabricated for the first time. The fabricated B-CeO2NCs/GCPE showed high selectivity and sensitivity for individual and simultaneous determinations of XA and HXA using SWV with low detection limits and wide concentration ranges. The practical application of the modified electrode was demonstrated by simultaneously determining the concentrations of XA and HXA in biological fluids and in fish meat samples.