Speciation of Trace Levels of Chromium with Bismuth Modified Pyrolyzed Photoresist Carbon Electrodes
Andrea Mardegan
Veneto Nanotech, Via delle Industrie 5, 30175, Venice-Marghera, Italy
Search for more papers by this authorMattia Cettolin
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, Italy
Search for more papers by this authorRahul Kamath
Department of Biomedical Engineering, University of California, Irvine, CA, USA 92697
Search for more papers by this authorVeronica Vascotto
Veneto Nanotech, Via delle Industrie 5, 30175, Venice-Marghera, Italy
Search for more papers by this authorAngela Maria Stortini
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, Italy
Search for more papers by this authorPaolo Ugo
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, Italy
Search for more papers by this authorPaolo Scopece
Veneto Nanotech, Via delle Industrie 5, 30175, Venice-Marghera, Italy
Search for more papers by this authorMarc Madou
Department of Biomedical Engineering, University of California, Irvine, CA, USA 92697
Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA, USA 92697
Materials and Manufacturing Technology, University of California, Irvine, California 92697, USA
Search for more papers by this authorCorresponding Author
Ligia Maria Moretto
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, Italy
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, ItalySearch for more papers by this authorAndrea Mardegan
Veneto Nanotech, Via delle Industrie 5, 30175, Venice-Marghera, Italy
Search for more papers by this authorMattia Cettolin
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, Italy
Search for more papers by this authorRahul Kamath
Department of Biomedical Engineering, University of California, Irvine, CA, USA 92697
Search for more papers by this authorVeronica Vascotto
Veneto Nanotech, Via delle Industrie 5, 30175, Venice-Marghera, Italy
Search for more papers by this authorAngela Maria Stortini
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, Italy
Search for more papers by this authorPaolo Ugo
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, Italy
Search for more papers by this authorPaolo Scopece
Veneto Nanotech, Via delle Industrie 5, 30175, Venice-Marghera, Italy
Search for more papers by this authorMarc Madou
Department of Biomedical Engineering, University of California, Irvine, CA, USA 92697
Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA, USA 92697
Materials and Manufacturing Technology, University of California, Irvine, California 92697, USA
Search for more papers by this authorCorresponding Author
Ligia Maria Moretto
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, Italy
Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, S. Marta 2137, Venice, ItalySearch for more papers by this authorAbstract
Pyrolyzed photoresist carbon electrodes modified with bismuth (Bi-PPCEs) were prepared and used for the determination of trace levels of chromium. In order to lower the detection limit, the choice of the supporting electrolyte concentration and electroanalytical parameters were optimized. The adsorptive cathodic stripping voltammetric determination of Cr(VI) at Bi-PPCE was selective even in the presence in Cr(III). A detection limit of 0.1 µg L−1 was obtained after 60 s preconcentration. After oxidation with UV light and oxygen, all chromium species were oxidized to Cr(VI) and the total inorganic Cr determination is possible. Finally, Bi-PPCE was applied to trace Cr(VI) analysis in real samples such as waste water and tap water.
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