阳极溶出伏安法测定痕量锡

Anodic stripping voltammetric determination of Sn(Ⅱ)

研究提出了一种基于阳极溶出伏安法的电化学传感器测定痕量锡的快速测定新技术。碳纳米管与中性红的协同作用使得Sn2+在该电极上的溶出峰电流有明显的增大,且电极的稳定性增强。实验结果表明,在优化条件下,Sn2+的溶出峰电流与其浓度在2×10-7～1×10-4mol/L范围内呈良好的线性关系。

An electrochemical sensor for the detection of tin ion was described using poly neutral red （PNR） and multiwalled carbon nanotube （MWNT） modified glassy carbon electrode by anodic stripping voltammetry. The striping peak currents of Sn^2＋ had obvious increasing because of cooperation of MWNT and PNR with excellent stability.The result showed that the striping peak currents change linearly with the concentration of Sn （Ⅱ） from 2×10^-7 -1×10^-4mol/L under the optimum conditions.