PFAS optical detection approach in Mar2Protect

https://21-esfc-lisbon.events.chemistry.pt/ 21st European Symposium on Fluorine Chemistry 3-9 August 2025 [email protected] PFAS optical detection approach in Mar2Protect Moisés Barata1, Catarina Novo,1 Ricardo Oliveira1, Filipa Sequeira1, Elena Gabirondo2,3,4, Liliana C. Tomé2,3, Inês Matos2, Ana B. Pereiro2, Rogério Nogueira1,* (1) Instituto de Telecomunicações, Universidade de Aveiro, Campus Universitário de Santiago, 3810 - 193 Aveiro, Portugal, [email protected] (2) LAQV, REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal (3) CEMMPRE, ARISE, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima, 3030-790 Coimbra, Portugal. (4) POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, P° Manuel de Lardizabal, 3, 20018 Donostia-San Sebastian, Spain. *e-mail: [email protected] Mar2Protect project is a European project, funded by the European Union that aims to give a holistic approach for the water protection. This project has several demosites selected due to climatic conditions, water sources and pollution type. One of the objectives is to monitor contaminants relevant to each demosite and the perand polyfluoroalkyl substances (PFAS) are one of the contaminants under study. PFAS are a group of fluorinated, organic compounds with stable carbon-fluoride bonds [1].The most common detection methods are laboratorial methods with high associated costs, time-consuming and unsuitable for in-situ analysis. It is therefore important to develop sensors for the detection and real-time monitoring of PFAS that can allow quick analysis and simple operation [2]. Optical sensors can be a suitable approach for in-situ monitoring since it allows compactness, lightweight, immunity to electromagnetic interference and also multiplexing capabilities [3]. In this work, the Mar2Protect approach for the detection and monitoring of PFAS will be shown. The proposed approach is a combination between a selective layer developed by FCT NOVA and an optical sensor setup developed by IT. Considerations for the upscaling from the laboratory to the field will also be shown, aiming the sensor implementation to one of the project demosites. Acknowledgements This project has received funding from the European Union's Horizon Europe research and innovation programme under grant agreement No GA 101082048. This work was supported by FCT - Fundação para a Ciência e Tecnologia, I.P. by project reference UIDB/50008, and DOI identifier 10.54499/UIDB/50008. References [1] Thompson D., Zolfigol N., Xia Z., Lei Y., Recent progress in perand polyfluoroalkyl substances (PFAS) sensing: A critical mini-review, Sens. Actuators Rep., 2024, 7 (100189), https://doi.org/10.1016/j.snr.2024.100189. [2] Rodriguez K.L., Hwang J.H., Esfahani A.R., Sadmani A.H.M.A., Lee W.H., Recent developments of PFASdetecting sensors and future direction: A review. Micromachines (Basel), 2020, 11 (667), 1-23, https://doi.org/10.3390/mi11070667. [3] Pires Duarte D. A., Nogueira R. N., Bilro L., Optical Fiber Sensing Principles. Plastic Optical Fiber Sensors, Science Technology and Applications, CRC Press, 2019, 67–91, https://doi.org/10.1201/b22357-3.