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Type: Artigo de periódico
Title: Square Wave Voltammetry In The Determination Of Ni2+ And Al 3+ In Biological Samples
Author: Paulino A.T.
Vargas A.M.M.
Santos L.B.
Nozaki J.
Muniz E.C.
Tambourgi E.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 × 10-7 and 1.0 × 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. 2008 © The Japan Society for Analytical Chemistry.
Rights: aberto
Identifier DOI: 10.2116/analsci.24.1443
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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