Heavy Metal-Ion Detection in Soil Using Anodic Stripping Voltammetry

Abstract

In this paper, a low-cost electrochemical system is designed for the detection of Heavy metals (HM’s) in soil solution. The system consists of screen-printed electrode, a potentiostat and microcontroller. The three terminal of Screen printed electrode is working electrode (WE), reference electrode(RE) and a counter electrode(CE). A potentiostat is electronic circuit that has been designed which applies suitable voltage for operation and analyze the signal coming from screen printed electrode. Based on peak current obtained at different reduction potential presence of these heavy metal ions is determined. The proposed circuit is simulated and also implemented using hardware components. The output from potentiostat are processed using microcontroller and results are displayed. The result is found to be effective and reliable.