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.
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Paulino, A.T., Vargas, A.M.M., Santos, L.B. et al. Square Wave Voltammetry in the Determination of Ni2+ and Al3+ in Biological Samples. ANAL. SCI. 24, 1443–1447 (2008). https://doi.org/10.2116/analsci.24.1443
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DOI: https://doi.org/10.2116/analsci.24.1443