本文利用阳极溶出法和内标法的基本原理和方法,在pH3.5左右的三氯化铝支持电解质中,加入定量内标离子,然后利用被测杂质离子与内标离子的波高比与浓度作图,进行定量测定高纯铝中锌、镉、铅、铜杂质元素。试验结果表明,方法准确度和精密度良好。微克/h_(Zn、Pb、Cu)/h_(Cd)(以下简称K)基本为一常数。采用镉作内标元素。 In this paper, the basic principles and methods of anodic dissolution method and internal standard method were used to add the quantitative internal standard ions to the aluminum trichloride supporting electrolyte at a pH of about 3.5. Then, by using the wave height ratio and the concentration of the impurity ions to the internal standard ions Drawing, quantitative determination of high purity aluminum in zinc, cadmium, lead, copper impurity elements. The test results show that the method has good accuracy and precision. Μg / h_ (Zn, Pb, Cu) / h_ (Cd) (hereinafter referred to as K) is basically a constant. Cadmium as internal standard element.