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Sensors 2017, 17(6), 1458; doi:10.3390/s17061458

Ag Nanoparticles Drop-Casting Modification of Screen-Printed Electrodes for the Simultaneous Voltammetric Determination of Cu(II) and Pb(II)

1
Departament d’Enginyeria Química i Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
2
Departament d’Enginyeria Química, Universitat Politècnica de Catalunya (UPC), Campus Diagonal Besòs, Edificio I (EEBE), Carrer Eduard Maristany 10-14, 08019 Barcelona, Spain
3
Barcelona Research Center for Multiscale Science and Engineering, 08019 Barcelona, Spain
4
Fundació CTM Centre Tecnològic, Plaça de la Ciència 2, 08240 Manresa, Spain
*
Author to whom correspondence should be addressed.
Received: 5 May 2017 / Revised: 26 May 2017 / Accepted: 17 June 2017 / Published: 21 June 2017
(This article belongs to the Special Issue Screen-Printed Electrodes)
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Abstract

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. View Full-Text
Keywords: silver nanoparticles; screen-printed electrodes; anodic stripping voltammetry; metal ions; nanoparticle drop-casting silver nanoparticles; screen-printed electrodes; anodic stripping voltammetry; metal ions; nanoparticle drop-casting
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Pérez-Ràfols, C.; Bastos-Arrieta, J.; Serrano, N.; Díaz-Cruz, J.M.; Ariño, C.; de 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 2017, 17, 1458.

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