Electrochemical response of carbon paste electrode modified with mixture of titanium dioxide/zirconium dioxide in the detection of heavy metals: Lead and cadmium

► Development of a novel TiO2/ZrO2 carbon paste composite electrode. ► Optimization of electrode synthesis parameters. ► Quantification of Pb and Cd using the new working electrode via cyclic voltammetry. ► Estimation of kinetic parameters, and detection limits using cyclic voltammetry.