Stripping voltammograms The data obtained are given in the table. Determine the shown were obtained from concentration of each metal in the water sample, as a 10.00mL water sample. ppb metal. The pH was controlled using 5.00mL of an acetate buffer; then 5.00mL of 1.0 MKCl solution was added as the supporting electrolyte. The peak potentials observed are as follows: Cu(II) 0.2V Voltammograms: Pb(I1)=0.5V a: blank Cd(11)=0.7b bi sample ci sample +2.00ppb metal standards d: sample +5.00ppb metal standards