Author(s): Crespilho Frank Nelson | Rezende Maria Olímpia Oliveira
Journal: Química Nova
ISSN 0100-4042
Volume: 27;
Issue: 6;
Start page: 964;
Date: 2004;
Original page
Keywords: humic acid | modified electrode | metals
ABSTRACT
Since 1992, the carbon paste electrodes modified with humic acids have been used for studying the behavior of metals in aqueous solutions. Many parameters influence the performance of the electrodes, such as the humic acid ratio, the nature of the humic acid, the accumulation time, the pH, the scan rate, and the preparation of the electrodes itself. There are various methos of preparing the electrodes. The goal of this paper is to review some of them. The advantages of using electrodes modified with humic acids as electrochemical sensors for evaluating metals in aqueous solution are stressed.
Journal: Química Nova
ISSN 0100-4042
Volume: 27;
Issue: 6;
Start page: 964;
Date: 2004;
Original page
Keywords: humic acid | modified electrode | metals
ABSTRACT
Since 1992, the carbon paste electrodes modified with humic acids have been used for studying the behavior of metals in aqueous solutions. Many parameters influence the performance of the electrodes, such as the humic acid ratio, the nature of the humic acid, the accumulation time, the pH, the scan rate, and the preparation of the electrodes itself. There are various methos of preparing the electrodes. The goal of this paper is to review some of them. The advantages of using electrodes modified with humic acids as electrochemical sensors for evaluating metals in aqueous solution are stressed.
