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Type: Artigo de periódico
Title: Square Wave Voltammetry In The Determination Of Ni2+ And Al3+ In Biological Sample.
Author: Paulino, Alexandre T
Vargas, Alexandro M M
Santos, Lídia B
Nozaki, Jorge
Muniz, Edvani C
Tambourgi, Elias B
Abstract: In this contribution, the amounts of Ni (nickel) and Al (aluminum) in tilapias (Oreochromis niloticus) were determined using square wave voltammetry (SWV) with glassy carbon working microelectrode with a mercury thin film, platinum counter electrode, and Ag/AgCl reference electrode. Ni was studied through the formation of the dimethylglyoxime-Ni (Ni-DMG) complex, while Al was studied through the formation of the Alizarin R-Al complex. The detection limit found for Ni-DMG and Alizarin R-Al complexes were 1.70 x 10(-7) and 1.0 x 10(-8) mol L(-1), respectively. The voltammetric anodic curves for the Alizarin R-Al complex were recorded over the potential range from -0.8 to -0.05 V while the voltammetric cathodic curve for the Ni-DMG complex was recorded over the potential range from -0.7 to -1.2 V. These methods detected low concentrations of Ni and Al in biological samples efficiently.
Subject: Aluminum
Environmental Monitoring
Citation: Analytical Sciences : The International Journal Of The Japan Society For Analytical Chemistry. v. 24, n. 11, p. 1443-7, 2008.
Rights: aberto
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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