Qiao W J, Dina H
Department of Chemistry, Tongji Medical University, Wuhan.
J Tongji Med Univ. 1993;13(3):190-3. doi: 10.1007/BF02886515.
An oxine modified electrode is prepared on the basis of carbon paste. The process is rapid and simple. The catalytic stripping voltammetric characteristic of Cu(II) on the modified electrode was studied and the method has been applied to the determination of trace Cu(II), and there was good linear relationship between the concentration of Cu(II) and the peak height in the concentration range of 1.5 x 10(-)-1.5 x 10(-6) mol/L for Cu(II). We have detected the copper content of human hair and blood with satisfactory results. Moreover, the reaction mechanism of the modified electrode was discussed. It was found that the improvement of sensitivity and selection of the modified electrode was dependent of the complex adsorbing property of the electrode surface and the sensitive catalytic hydrogen wave produce.
基于碳糊制备了8-羟基喹啉修饰电极。该过程快速且简单。研究了修饰电极上Cu(II)的催化溶出伏安特性，并将该方法应用于痕量Cu(II)的测定，在1.5×10⁻⁸ - 1.5×10⁻⁶ mol/L的Cu(II)浓度范围内，Cu(II)浓度与峰高之间具有良好的线性关系。我们检测了人发和血液中的铜含量，结果令人满意。此外，还讨论了修饰电极的反应机理。发现修饰电极灵敏度的提高和选择性取决于电极表面的络合吸附性能以及产生的灵敏催化氢波。
