Electrochemical properties of commercial tin-bismuth alloy were investigated and the tin-bismuth alloy based electrode was used for stripping voltammetric determination of cadmium (Cd2+) for the first time. Electrodeposition and electrochemical stripping of Cd2+ on tin-bismuth alloy electrode (SnBiE) were implemented and the results with an excellent linear dynamic range of 5-500 nM, a correlation coefficient of 0.999 and a detection limit of 1.1 nm were obtained under the optimal experimental conditions. It revealed that not only does this environment friendly alloy electrode material have a high hydrogen overvoltage and relatively wide potential window, but also has excellent repeatability and reproducibility. The practical application was carried out for the determination of Cd2+ in food samples and the results were consistent well with those by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS).Electrochemical properties of commercial tin-bismuth alloy were investigated and the tin-bismuth alloy based electrode was used for stripping voltammetric determination of cadmium (Cd2+) for the first time. Electrodeposition and electrochemical stripping of Cd2+ on tin-bismuth alloy electrode (SnBiE) were implemented and the results with an excellent linear dynamic range of 5-500 nM, a correlation coefficient of 0.999 and a detection limit of 1.1 nm were obtained under the optimal experimental conditions. It revealed that not only does this environment friendly alloy electrode material have a high hydrogen overvoltage and relatively wide potential window, but also has excellent repeatability and reproducibility. The practical application was carried out for the determination of Cd2+ in food samples and the results were consistent well with those by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). (C) 2011 Elsevier B.V. All rights reserved
