We present a very simple approach for the detection of the Perfluorinated Alkylated\nSubstances (PFAs) in water solution. Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA)\nare the most extensively investigated perfluoroalkyl and polyfluoroalkyl substances in water because\nhuman exposition can occur through different pathways, even if the dietary intake seems to be their\nmain route of exposure. The developed sensor is based on a specific Molecularly Imprinted Polymer\n(MIP) receptor deposited on a simple D-shaped Plastic Optical Fiber (POF) platform. This novel\nchemical sensor has been characterized using a very simple and low-cost experimental setup based\non an LED and two photodetectors. This optical sensor system is an alternative method to monitor\nthe presence of contaminants with an MIP receptor, instead of a surface plasmon resonance (SPR)\nsensor in D-shaped POFs. For the sake of comparison, the results obtained exploiting the same MIP\nfor PFAs on a classic SPR-POF sensor have been reported. The experimental results have shown\nthat the actual limit of detection of this new configuration was about 0.5 ppb. It is similar to the one\nobtained by the configuration based on an SPR-POF with the same MIP receptor.
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