Sn—Pb 合金是一种重要的焊接材料,在电子工业、机械制造等部门中有广泛应用,其中的杂质元素含量过高,可以导致焊接的性能变差,因此要求控制在一定的指标内。合金内杂质元素的测定,一般可由原子吸收法或极谱法测定。ICP—AES 是八十年代发展起来的测试技术之一,它具有检出限低,动态范围宽,可快速同时测定多种元素等优点,近年来发展较为迅速,但是,由于仪器的控制条件较复杂,对测定结果的影响比较大,寻找最佳工作条件是测试准 Sn-Pb alloy is an important welding material, widely used in electronics industry, machinery manufacturing and other departments. The content of impurity elements in Sn-Pb alloy is too high, which can lead to the deterioration of welding performance. Therefore, it is required to be controlled within a certain index. Determination of impurity elements in alloys, generally by atomic absorption spectrometry or polarographic determination. ICP-AES is one of the testing techniques developed in the 1980s. It has the advantages of low detection limit, wide dynamic range, rapid and simultaneous determination of multiple elements and the like. In recent years, ICP-AES has developed rapidly. However, Complex, the impact of the measurement results is relatively large, to find the best working conditions is the test