Development of a Two-board Potentiostat for Square Wave Anodic Stripping Voltammetry: Prospects for Heavy Metal Monitoring

Heavy metals such as cadmium, lead, arsenic, mercury, and chromium are harmful to human health, even in a trace amount. Despite existing guidelines and regulations for handling these toxic substances, mortality cases among wild animals due to heavy metal poisoning continue to occur. To effectively investigate the sources of heavy metal contaminants in the environment, it is essential to establish real-time monitoring systems across affected areas. This paper presents the design and development of a potentiostat device (HMstat) with the capability to perform a square wave anodic stripping voltammetry (SWASV). The HMstat was realized using a two-board type potentiostat design, incorporating through-hole technology for the analog component and the myRIO platform for the digital component. Performance evaluations indicated that the HMstat is capable of performing the SWASV method. The results demonstrated that the HMstat achieved an accuracy of 99.014%, remained within the tolerance range of components used and surpassed the existing solution.