Electrochemical sensing of PFAS using gold nanoparticle functionalized electrodes

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dc.contributor.assigneeRice Universityen_US
dc.contributor.assigneeBoard of Regents, The University of Texas Systemen_US
dc.contributor.assigneeArizona Board of Regents on Behalf of Arizona State Universityen_US
dc.contributor.publisherUnited States Patent and Trademark Officeen_US
dc.creatorVillagran, Dinoen_US
dc.creatorWesterhoff, Paulen_US
dc.creatorCalvillo Solis, Jonathan Josueen_US
dc.creatorWong, Michaelen_US
dc.date.accessioned2025-04-08T20:19:20Zen_US
dc.date.available2025-04-08T20:19:20Zen_US
dc.date.filed2023-06-15en_US
dc.date.issued2025-03-04en_US
dc.description.abstractA method of electrochemical sensing includes providing an electrochemical sensor comprising a glassy carbon substrate and gold nanoparticles located on a surface of the glassy carbon substrate; and sensing electrochemically a compound selected from the group consisting of polyfluoroalkyl compounds or perfluoroalkyl compounds using the electrochemical sensor. PFOA quantification was performed by Square Wave Adsorptive Cathodic Stripping Voltammetry (SW-AdCSV) in test solutions with a 100-5,000 ppt concentration. The concentration has a linear relationship with the stripping current within this range. Analysis of tap and groundwater samples performed by additions method demonstrated precision and accuracy above 95%. These electrodes show stability throughout 200 cycles, and reproducibility across similarly prepared but different electrodes above 97.5%. Providing the electrochemical sensor can include providing at least one member selected from the group consisting of perfluoro-1-octanethiol (PFTO), 2,2,2-trifluoroethanethiol (TFET) or perfluorodecanethiol (PFDT) on the surface of the glassy carbon substrate.en_US
dc.digitization.specificationsThis patent information was downloaded from the US Patent and Trademark website (http://www.uspto.gov/) as image-PDFs. The PDFs were OCRed for access purposes.en_US
dc.format.extent37en_US
dc.identifier.patentIDUS12241855B2en_US
dc.identifier.urihttps://hdl.handle.net/1911/118300en_US
dc.language.isoengen_US
dc.titleElectrochemical sensing of PFAS using gold nanoparticle functionalized electrodesen_US
dc.typeUtility patenten_US
dc.type.dcmiTexten_US
dc.type.genrepatentsen_US
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