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oai:recercat.cat:2117/1077952026-01-21T10:43:18Zcom_2072_1033col_2072_452950

Ag nanoparticles drop-casting modification of screen-printed electrodes for the simultaneous voltammetric determination of Cu(II) and Pb(II) Pérez Ràfols, Clara Bastos Arrieta, Julio Alonso Serrano, Núria Díaz Cruz, José Manuel Ariño, Cristina Pablo Ribas, Joan de Esteban, Miquel Universitat Politècnica de Catalunya. Departament d'Enginyeria Química Universitat Politècnica de Catalunya. SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials Àrees temàtiques de la UPC::Enginyeria química Nanoparticles Silver silver nanoparticles screen-printed electrodes anodic stripping voltammetry metal ions nanoparticle drop-casting Nanopartícules Plata A new silver nanoparticle modified screen-printed electrode was developed and applied to the simultaneous determination of Pb(II) and Cu(II). Two different types of silver nanoparticles with different shapes and sizes, Ag nanoseeds and Ag nanoprisms, were microscopically characterized and three different carbon substrates, graphite, graphene and carbon nanofibers, were tested. The best analytical performance was achieved for the combination of Ag nanoseeds with a carbon nanofiber modified screen-printed electrode. The resulting sensor allowed the simultaneous determination of Pb(II) and Cu(II) at trace levels and its applicability to natural samples was successfully tested with a groundwater certified reference material, presenting high reproducibility and trueness. Postprint (published version) 2017-06-21 Article Pérez, C., Bastos-Arrieta, J., Serrano, N., Díaz, J., Ariño, C., Pablo, J., Esteban, M. Ag nanoparticles drop-casting modification of screen-printed electrodes for the simultaneous voltammetric determination of Cu(II) and Pb(II). "Sensors", 21 Juny 2017, vol. 17, núm. 6. 1424-8220 https://hdl.handle.net/2117/107795 10.3390/s17061458 eng http://www.mdpi.com/1424-8220/17/6/1458 http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access Attribution-NonCommercial-NoDerivs 3.0 Spain application/pdf MDPI AG