title: Penicillamine-modified sensor for the voltammetric determination of Cd(II) and Pb(II) ions in natural samples.
abstract: A new penicillamine-GCE was developed based on the immobilization of d-penicillamine on aryl diazonium salt monolayers anchored to the glassy carbon electrode (GCE) surface and it was applied for the first time to the simultaneous determination of Cd(II) and Pb(II) ions by stripping voltammetric techniques. The detection and quantification limits at levels of µg L(-1) suggest that the penicillamine-GCE could be fully suitable for the determination of the considered ions in natural samples.
authors.affiliation: Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona Spain.
authors.forename: Clara
authors.initials: C
authors.lastname: Pérez-Ràfols
authors.affiliation: Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona Spain. Electronic address: nuria.serrano@ub.edu.
authors.forename: Núria
authors.initials: N
authors.lastname: Serrano
authors.affiliation: Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona Spain.
authors.forename: José Manuel
authors.initials: JM
authors.lastname: Díaz-Cruz
authors.affiliation: Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Ariño
authors.affiliation: Departament de Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona Spain.
authors.forename: Miquel
authors.initials: M
authors.lastname: Esteban
mesh_terms: D002104:Cadmium / Q000032:analysis* / Q000737:chemistry; D002244:Carbon / Q000737:chemistry; D003979:Diazonium Compounds / Q000737:chemistry; D055664:Electrochemical Techniques; D004566:Electrodes; D007854:Lead / Q000032:analysis* / Q000737:chemistry; D057230:Limit of Detection; D010396:Penicillamine / Q000737:chemistry*; D015203:Reproducibility of Results; D062065:Wastewater / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D002104:Cadmium; D002244:Carbon; D003979:Diazonium Compounds; D007854:Lead; D010396:Penicillamine; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Chelating agent-modified sensor; Electrochemical grafting; Metal determination; Stripping voltammetry; d-Penicillamine