Oral Presentation Royal Australian Chemical Institute National Congress 2026

Electrochemical Innovation for Real-World Water Monitoring   (134204)

Krishnan Murugappan 1 , Daniella Caruso 1 , Dylan Marley 1 , David Macedo 1 , Tony Kilpatrick 1
  1. Commonwealth Scientific and Industrial Research Organization (CSIRO), Clayton South,, VICTORIA, Australia

Electrochemical sensors offer huge potential for monitoring and improving environmental conditions, from water quality assessment to pollution control and remediation. Potentiometric sensors, a subclass within electrochemical sensors, are attractive for these applications due to their low cost, minimal power requirements, fast response times, and ability to be easily integrated with electronic components. They are able to determine the concentration of the target analyte by measuring the variation of potential difference between an indicator/working and reference electrode. One of the challenges with implementing potentiometric sensors for real world application is their long-term drift and reliability/stability of the reference electrode including its regular maintenance/calibration requirements. We have recently developed a robust solid-state reference electrode (SSRE) that is able to last up to 18 months in various environmental conditions that improves the accuracy of the sensor measurements. This CSIRO patented SSRE has been paired up with commercial pH, ORP, conductivity and temperature electrodes to develop a water quality monitoring prototype termed VESITM, a cost-effective analytics platform with minimal maintenance and ongoing calibration. With recent funding from industry and the Science and Industry Endowment Fund (SIEF), we have trialled VESITM in targeted applications that demonstrate its versatility and impact. We will be sharing exciting monitoring data and showcasing our next-generation prototype, which reflects our broader goal of delivering scalable sensing solutions for both environmental remediation and mineral processing.