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Type: Artigo de periódico
Title: Adsorption of a copper (II) complex on calcium phosphate intercalated with 4-aminobenzoic acid: synthesis and electrochemical investigation
Author: Silva, Camila F. N.
Souza, Fernando M. de
Santos, Jéssica P.
Dias, Ana Paula B.
Santana, Ana Paula R.
Lazarin, Angélica M.
Sernaglia, Rosana L.
Andreotti, Elza I. S.
Airoldi, Claudio
Abstract: In this study, the adsorption isotherm of copper (II) on a calcium phosphate host intercalated with 4-aminobenzoic acid in an ethanol solution was investigated. This gave a maximum adsorption capacity of 1.74 mmol g-1. The material was incorporated into a carbon-paste electrode, and its electrochemical properties were investigated. However, for a dopamine solution, the anodic peak current increased owing to the electrocatalytic oxidation. The electrode presented the same response for at least 150 successive measurements, showing good repeatability. The modified electrode is very stable and reproducible. The electrode sensor was successfully applied for dopamine determination in pharmaceutical preparations.
Subject: calcium phosphate
carbon-paste electrode
Editor: Sociedade Brasileira de Química
Citation: Química Nova. Sociedade Brasileira de Química, v. 36, n. 8, p. 1170-1175, 2013.
Rights: aberto
Identifier DOI: 10.1590/S0100-40422013000800016
Date Issue: 1-Jan-2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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