Integrated sensor systems in CMOS technology for water quality monitoring – SYSCO

Water quality monitoring is a major challenge for drinking water distribution networks as well as for agricultural and agri-food uses. In the context of the development of the Internet of Things (IoT), it is possible to develop real-time measurements of water quality. After a demonstration of ultra-sensitive pH sensors integrated on a 28 nm CMOS technology from STMicroelectronics, we propose to study the cointegration of several ISFETs sensors sensitive to the main polluant species: ammonium (NH4+) and nitrates (NO3-) ions but also toxic ions of heavy metals (Pb2+, Hg2+…) present as traces. The studies will focus on the functionalization of sensitive membranes (ISM) to improve the selectivity of sensors and on the implementation of calibration protocols for measurements in water. Finally, the evaluation of the sensor systems will be carried out on samples supplied by the Feyssine sewage treatment plant in Lyon-Villeurbanne.