Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
Phys Chem Chem Phys. 2013 Jan 7;15(1):142-7. doi: 10.1039/c2cp43283h. Epub 2012 Nov 13.
Selective anodic stripping voltammetry of trace metal ions in a mixture solution with another interfering metal was developed based on Fick's law concerning the diffusion profile of interfering metals at the electrode surface after electrolysis treatment. A boron-doped diamond film was used as the sensing electrode, while a perforated carbon sheet was used for the interference-depleting electrode. The influence of the electrode distance and the time of electrolysis on the formation of the diffusion profile was studied. As a working model, the detection of cadmium with copper interference was investigated. The advantage of the method in comparison to general electrolysis was also discussed. The method offers a new perspective for improving the selective detection of metal ions by analyzing the diffusion profiles of the interfering species at the surface of electrodes.
基于电解处理后干扰金属在电极表面扩散轮廓的菲克定律，开发了一种用于混合溶液中痕量金属离子的选择性阳极溶出伏安法。该方法采用掺硼金刚石薄膜作为传感电极，多孔碳片作为干扰消除电极。研究了电极距离和电解时间对扩散轮廓形成的影响。作为工作模型，研究了铜干扰下镉的检测。还讨论了该方法与一般电解法相比的优势。该方法通过分析电极表面干扰物质的扩散轮廓，为提高金属离子的选择性检测提供了新的思路。
