7.1.1 - Electrochemical Approaches for Monitoring PFOA in Aqueous Environments
- Event
- EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich - Band
- Lectures
- Chapter
- Chemical Sensors
- Author(s)
- A. Beard, N. Budimirovicr, T. Kipfer, S. Nicolay - Csem Sa,Neuchâtel (Switzerland), S. Piletsky, E. Piletska - University of Leicester,Leicester (UK)
- Pages
- 220 - 221
- DOI
- 10.5162/eurosensors2026/7.1.1
- ISBN
- 978-3-910600-12-6
- Price
- free
Abstract
We report a transient aptasensor for food toxin detection based on screen printed interdigitated electrodes (IDEs) fabricated using graphene ink printed on cellulose substrate. The aptamer is covalentlyfunctionalized to provide selective biorecognition of the target food toxins on this transient platform. Electrochemical impedance spectroscopy reveals concentration-dependent impedance features, driven by interfacial modification due to the aptamer-toxin binding at the electrode surface. Compared to conventional single working and counter electrode configuration, the IDE electrode configuration enables a clear differentiation between the target concentrations in the high frequency range. The materials and fabrication process ensure eco-friendly and compatible device with low-cost, scalable manufacturing. This approach supports the development of sustainable biosensing technologies for rapid food safety screening adaptable for point of care (POC) detection system.