Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
Talanta. 2012 Jan 15;88:707-10. doi: 10.1016/j.talanta.2011.11.070. Epub 2011 Nov 28.
A carbon paste electrode modified with tin was used for the determination of trace cadmium by anodic stripping voltammetry. The electroanalytical performance for the determination of Cd(II) on the tin-coated carbon paste electrode(SnF-CPE) was better than that on the carbon paste electrode. The measuring conditions have been optimized. The measurement of trace cadmium on the SnF-CPE has the best response under the conditions of 0.10molL(-1) acetate buffer solution (pH 3.9), 3.5mgL(-1) Sn(II), deposition potential of -1.40V, and deposition time of 150s. The SnF-CPE revealed highly linear behavior in the concentration range of 2.0-90.0μgL(-1) with the detection limit of 1.13μgL(-1) for Cd(II). The developed sensor has been applied to the determination of Cd(II) in real water samples with satisfactory results.
采用镀锡碳糊电极通过阳极溶出伏安法测定痕量镉。镀锡碳糊电极（SnF-CPE）对 Cd(II) 的电化学分析性能优于碳糊电极。优化了测量条件。在 0.10molL(-1) 醋酸盐缓冲溶液（pH 3.9）、3.5mgL(-1) Sn(II)、沉积电位为-1.40V 和沉积时间为 150s 的条件下，SnF-CPE 对痕量镉的测量具有最佳响应。SnF-CPE 在 2.0-90.0μgL(-1) 的浓度范围内呈现出高度线性行为，Cd(II) 的检测限为 1.13μgL(-1)。所开发的传感器已成功应用于实际水样中 Cd(II) 的测定，结果令人满意。
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