Radovanović Milan B, Petrović Mihajlović Marija B, Simonović Ana T, Tasić Žaklina, Antonijević Milan M
Technical Faculty in Bor, University of Belgrade, Vojske Jugoslavije 12, P.O. Box 50, 19210 Bor, Serbia.
Sensors (Basel). 2024 Dec 30;25(1):159. doi: 10.3390/s25010159.
Cadmium is one of the most dangerous pollutants found in the environment, where it exists mainly due to human activities. High cadmium concentrations can cause serious problems, which is why the detection and determination of Cd is one of the most important tasks. Electroanalytical methods provide rapid and accurate results in the detection of cadmium in various solutions. In this study, the possibility of using a bismuth film electrode deposited on a brass surface and electroanalytical techniques for the detection of cadmium is investigated. The bismuth film was deposited on the surface of the brass electrode using a chronoamperometric technique. Cyclic voltammetry and electrochemical impedance spectroscopy were used to characterize the synthesized bismuth film electrode. The current peaks obtained by anodic square-wave stripping voltammetry under optimized conditions showed a linear relationship in the investigated concentration range of cadmium. The study of the interference of different cations (Cr, Mn, Zn, Ca, K, Mg and Na) showed that the tested cations have no influence on the determination of Cd ions in the investigated solution. This finding provides a good opportunity for the use of the synthesized electrode in real samples.
镉是环境中发现的最危险的污染物之一，其在环境中的存在主要归因于人类活动。高浓度镉会引发严重问题，这就是为何镉的检测与测定是最重要的任务之一。电分析方法在检测各种溶液中的镉时能提供快速且准确的结果。在本研究中，对使用沉积在黄铜表面的铋膜电极及电分析技术检测镉的可能性进行了研究。采用计时电流法在黄铜电极表面沉积铋膜。运用循环伏安法和电化学阻抗谱对合成的铋膜电极进行表征。在优化条件下通过阳极方波溶出伏安法获得的电流峰在所研究的镉浓度范围内呈线性关系。对不同阳离子（铬、锰、锌、钙、钾、镁和钠）干扰的研究表明，所测试的阳离子对所研究溶液中镉离子的测定没有影响。这一发现为在实际样品中使用合成电极提供了良好契机。
