Victor Elias Mouchrek Filho
University of São Paulo
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Featured researches published by Victor Elias Mouchrek Filho.
Electroanalysis | 1999
Victor Elias Mouchrek Filho; Aldaléa Lopes Brandes Marques; Jiu Jun Zhang; Gilberto Orivaldo Chierice
Alizarin red S (ARS) has been used previously as a spectrophotometric reagent for several metals. It has been also employed as an electrode modifier agent for voltammetric analysis. With the purpose of studying the electrochemistry of the adsorbed ARS ligand and the surface ARS-copper(II) complex, on the pyrolytic graphite electrode, cyclic voltammetric experiments were carried out in open and closed circuits. The results indicate that ARS is strongly and irreversibly adsorbed on the electrode surface. This adsorption process was employed to immobilize, by complexation, copper ions from the solution, and for a possible application of the ARS modified electrode in trace copper electroanalysis are explored in this article. The optimization for trace copper determination in aqueous solution was accomplished by anodic stripping voltammetric technique (differential pulse mode); the preconcentration potential was –0.40 V; pH was 5.3 and accumulation time was 2 minutes. Under these conditions, the detection limit was 1.7×10–8 mol L–1, and a linear range from 1.0×10–7 to 4.0×10–6 mol L–1.
Química Nova | 1999
Victor Elias Mouchrek Filho; Gilberto Orivaldo Chierice
The alizarin red S (ARS) has been used as a spectrophotometric reagent of several metals for a long time. Now this alizarin has been used as modifier agent of electrodes, for voltammetric analyses. In this work cyclic voltammetry experiments was accomplished on closed circuit, with the objective of studying the voltammetric behavior of alizarin red S adsorbed and of its copper complex, on the surface of the pyrolytic graphite electrode. These studies showed that ARS strongly adsorbs on the surface of this electrode. This adsorption was used to immobilize ions copper(II) from the solution.
Hig. aliment | 2011
Victor Elias Mouchrek Filho; Elaine Batista Almeida; João Elias Mouchrek Filho; Adenilde Ribeiro Nascimento; Marlucy Bezerra Oliveira
Archive | 2014
Alvaro Itauna Schalcher Pereira; Victor Elias Mouchrek Filho; Adenilde Ribeiro Nascimento
Hig. aliment | 2014
Victor Elias Mouchrek Filho; Luana Lopes Padilha; Paula Coêlho Everton; Silvio Carvalho Marinho; Dionney Andrade de Sousa; Rayone Wesly Santos de Oliveira; João Reis Salgado Costa Sobrinho
Hig. aliment | 2013
Silvio Carvalho Marinho; Rosélia de Sousa Brito; Marly Piedade Carvalho; Victor Elias Mouchrek Filho; Paula Coêlho Everton; Gustavo Monteiro da Silva
Hig. aliment | 2013
Érica Mendonça Pinheiro; Joacy Serra Carneiro Junior; Natale Cristine Costa Carvalho; Paula Coêlho Everton; Victor Elias Mouchrek Filho
Hig. aliment | 2012
Vera Lúcia Neves Dias; Eliane Coelho Rodrigues da Silva; Ivaneide de Oliveira Nascimento; Luana Arrais Resende; Victor Elias Mouchrek Filho; Natale Cristine Costa Carvalho
Hig. aliment | 2012
Marcos Leandro Barbosa Ferreira; Victor Elias Mouchrek Filho; Natale Cristine Costa Carvalho; Marlucy Bezerra Oliveira; João Elias Mouchrek Filho; Mariano Oscar Aníbal Ibañez Rojas
Hig. aliment | 2012
Victor Elias Mouchrek Filho; Silvio Carvalho Marinho; Adenilde Ribeiro Nascimento; João Elias Mouchrek Filho; Mariano Oscar Aníbal Ibañez Rojas; José Silva de Oliveira; Diogo Marcelo Lima Ribeiro