caa a22 4500 445880473 CHVBK 20180317145541.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0583-6 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0583-6 Determination of lead(II) in aqueous solution using carbon nanotubes paste electrodes modified with Amberlite IR-120 [Elektronische Daten] [Marilene do Nascimento, Patrícia Martelli, Clascídia Furtado, Adelina Santos, Luiz de Oliveira, Honória Gorgulho] A new composite electrode is described for anodic stripping voltammetry determination of Pb(II) at trace level in aqueous solution. The electrode is based on the use of multiwalled carbon nanotubes and Amberlite IR-120. The anodic stripping voltammograms depend, to a large extent, on the composition of the modified electrode and the preconcentration conditions. Under optimum conditions, the anodic peak current at around −0.57V is linearly related to the concentration of Pb(II) in the range from 9.6 × 10−8 to 1.7 × 10−6mol L−1 (R = 0.998). The detection limit is 2.1 × 10−8molL−1, and the relative standard deviation (RSD) at 0.24 × 10−6molL−1 is 1.7% (n = 6). The modified electrode was applied to the determination of Pb(II) using the standard addition method; the results showed average relative recoveries of 95% for the samples analysed. Figure A new composite electrode is described for anodic stripping voltammetry determination of Pb(II) at trace level in aqueous solution. The electrode is based on the use of MWCNT and Amberlite IR-120. The method showed a good linearity for 9.6 × 10−8 - 1.7 × 10−6molL−1 and detection limit of 2.1 × 10−8molL−1. Springer-Verlag, 2011 Multiwall carbon nanotubes nationallicence Composite electrodes nationallicence Ion exchange resin nationallicence Lead determination nationallicence do Nascimento Marilene Universidade Federal de São João del Rei, Praça Dom Helvécio 74, CEP 36301-160, São João del Rei, Minas Gerais, Brazil aut Martelli Patrícia Universidade Federal de São João del Rei, Praça Dom Helvécio 74, CEP 36301-160, São João del Rei, Minas Gerais, Brazil aut Furtado Clascídia Laboratório de Química de Nanoestruturas, Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais, Brazil aut Santos Adelina Laboratório de Química de Nanoestruturas, Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais, Brazil aut de Oliveira Luiz Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil aut Gorgulho Honória Universidade Federal de São João del Rei, Praça Dom Helvécio 74, CEP 36301-160, São João del Rei, Minas Gerais, Brazil aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 485-493 0026-3672 173:3-4<485 2011 173 604 https://doi.org/10.1007/s00604-011-0583-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0583-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- do Nascimento Marilene Universidade Federal de São João del Rei, Praça Dom Helvécio 74, CEP 36301-160, São João del Rei, Minas Gerais, Brazil aut NATIONALLICENCE 700 1- Martelli Patrícia Universidade Federal de São João del Rei, Praça Dom Helvécio 74, CEP 36301-160, São João del Rei, Minas Gerais, Brazil aut NATIONALLICENCE 700 1- Furtado Clascídia Laboratório de Química de Nanoestruturas, Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais, Brazil aut NATIONALLICENCE 700 1- Santos Adelina Laboratório de Química de Nanoestruturas, Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais, Brazil aut NATIONALLICENCE 700 1- de Oliveira Luiz Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil aut NATIONALLICENCE 700 1- Gorgulho Honória Universidade Federal de São João del Rei, Praça Dom Helvécio 74, CEP 36301-160, São João del Rei, Minas Gerais, Brazil aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 485-493 0026-3672 173:3-4<485 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer