The methodology of opto-electrochemical detection of "forever chemical" perfluorooctanoic acid (PFOA) at ppt level is developed. The approach consists in cathodic pre-concentration of PFOA on the surface of biochar- modified screen-printed electrodes (BC-SPE) followed by its defragmentation into partially hydrogenated PFOA chains and release of proportional amount of F- ions. The F- concentration was estimated with on- paper-based optical sensor array based on silicon and aluminum corrolates, SiTTC and AlTPF5C respectively. The data of BC-SPE electroreduction currents, fluorescence and luminescence intensity of SiTTC and AlTPF5C -based optodes fused together were used to construct PLS1 calibration model that has permitted PFOA quantification in concentration range from 40 ng/l to 4 mg/l with the lowest detection limit of 15 ppt and R-2 of 0.896.

Pizzoli, F., Caroleo, F., Nardis, S., Paolesse, R., Micheli, L., Cancelliere, R., et al. (2024). Towards selective detection of “forever chemicals”: development of opto-electrochemical sensor array for perfluorooctanoicacid (PFOA). In 2024 IEEE International Symposium on Olfaction and Electronic Nose (ISOEN) (pp.1-3). IEEE [10.1109/ISOEN61239.2024.10556380].

Towards selective detection of “forever chemicals”: development of opto-electrochemical sensor array for perfluorooctanoicacid (PFOA)

Pizzoli F.;Caroleo F.;Nardis S.;Paolesse R.;Micheli L.;Cancelliere R.;Lvova L.
2024-01-01

Abstract

The methodology of opto-electrochemical detection of "forever chemical" perfluorooctanoic acid (PFOA) at ppt level is developed. The approach consists in cathodic pre-concentration of PFOA on the surface of biochar- modified screen-printed electrodes (BC-SPE) followed by its defragmentation into partially hydrogenated PFOA chains and release of proportional amount of F- ions. The F- concentration was estimated with on- paper-based optical sensor array based on silicon and aluminum corrolates, SiTTC and AlTPF5C respectively. The data of BC-SPE electroreduction currents, fluorescence and luminescence intensity of SiTTC and AlTPF5C -based optodes fused together were used to construct PLS1 calibration model that has permitted PFOA quantification in concentration range from 40 ng/l to 4 mg/l with the lowest detection limit of 15 ppt and R-2 of 0.896.
IEEE International Symposium on Olfaction and Electronic Nose (ISOEN)
Grapevine, TX, USA
2024
Rilevanza internazionale
2024
Settore CHIM/07
Settore CHIM/01
Settore CHEM-06/A - Fondamenti chimici delle tecnologie
Settore CHEM-01/A - Chimica analitica
English
forever chemical" PFOA
opto-electrochemical detection
carbonaceous material-modified electrodes
Si-and Al-corrolate receptors
MUR PRIN2020 project Astrali (SN, Grant 2020CBEYHC_004)
Intervento a convegno
Pizzoli, F., Caroleo, F., Nardis, S., Paolesse, R., Micheli, L., Cancelliere, R., et al. (2024). Towards selective detection of “forever chemicals”: development of opto-electrochemical sensor array for perfluorooctanoicacid (PFOA). In 2024 IEEE International Symposium on Olfaction and Electronic Nose (ISOEN) (pp.1-3). IEEE [10.1109/ISOEN61239.2024.10556380].
Pizzoli, F; Caroleo, F; Nardis, S; Paolesse, R; Micheli, L; Cancelliere, R; Natale, Cd; Lvova, L
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/395488
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