阳极溶出伏安法快速测定水中镉污染的研究

Rapid determination of cadmium pollution in water by anodic stripping voltammetry

镉是工业生产中常见的重金属离子,同时又是衡量水质的重要指标之一。介绍了阳极溶出伏安法快速测定重金属镉的方法研究,以实现水体中镉的现场快速分析。结果显示,阳极溶出伏安法测定水中镉灵敏度高、精密性和准确度好,且与石墨炉原子吸收法相比,测定相对误差在20%以内,可以满足现场快速测定误差要求,值得推广。

Cadmium is a common heavy metal ion in industrial production,and it is also one of the important indexes to measure water quality.In this paper,the method of rapid determination of cadmium in water by anodic stripping voltammetry is introduced in order to realize the rapid analysis of cadmium in water.The results show that the anodic stripping voltammetry has high sensitivity,high precision and accuracy.Compared with graphite furnace atomic absorption spectrometry,the relative error of determination is less than 20%,which can meet the requirement of rapid determination error in the field.Therefore,it is worth popularizing.