A ferrocene-integrated fluorinated molecularly imprinted sensor for external-probe-free and portable PFOA detection.
Per- and polyfluoroalkyl substances (PFAS) require sensitive, selective, and field-compatible monitoring in aquatic environments. Perfluorooctanoic acid (PFOA) remains challenging for electrochemical detection because of its intrinsic redox inactivity and amphiphilic structure. Here, an external-probe-free electrochemi...