Pérez Ràfols, ClaraSerrano i Plana, NúriaDíaz Cruz, José ManuelAriño Blasco, CristinaEsteban i Cortada, Miquel2018-10-222018-10-222016-08-010039-9140https://hdl.handle.net/2445/125482This work reports the development of a glutathione modified electrode via electrografting on a screen-printed carbon nanofiber substrate (GSH-SPCNFE). GSH-SPCNFE was compared to a classical screen-printed carbon electrode modified with glutathione (GSH-SPCE) for the simultaneous voltammetric determination of Cd(II) and Pb(II). Their electrochemical characterization and analytical performance suggest that SPCNFE could be a much better support for GSH immobilization. The applicability of GSH-SPCNFE for the determination of low concentration levels of Pb(II) and Cd(II) ions in environmental samples was successfully tested in a certified wastewater reference material by means of stripping voltammetry with a very high reproducibility and good trueness.26 p.application/pdfengcc-by-nc-nd (c) Elsevier B.V., 2016http://creativecommons.org/licenses/by-nc-nd/3.0/esGlutatióVoltametriaMetalls pesantsGlutathioneVoltammetryHeavy metalsinfo:eu-repo/semantics/article6597632018-10-22info:eu-repo/semantics/openAccess27216650