Abstract
Sand paper electrodes coated with antimony were used for electrochemical sensor of cadmium. The eletroanalytical determination of cadmium was found to be optimized in 0.01 M H2 SO4 with the following experimented condition deposition time 200 s , deposition potential -1.2 V , step potential 0.005 V , amplitude 0.02 V and frequency 25.00 Hz.
Under these optimized condition the anodic stripping peak current was proportional over the concentration range 10-40 ppb ( R=0.9931 )