Development of new thick film sensor for heavy metals detection

The aim of this work is to find a perspective and ecological way for heavy metals detection. For this purpose we designed a new type of an amperometric sensor substrate, which joins a topology of ring disc electrode with an existing type of amperometric sensor produced by BVT Technologies Company. The sensor is fabricated using thick film technology. The intention was to prepare a base substrate for study of properties of materials used for working electrodes fabrication. In this work, the main emphasis was on sensor design and on materials of working and reference electrodes to ensure reproducible and reliable detection of heavy metals with sufficient limit of detection. In this work, various graphite materials for sensors working electrodes were prepared, screen-printed, measured and compared with a classical graphite electrode.