Abstract:According to the characteristics of the main elements in the commercial tin-lead solders (tin content range from 0.X% to 95% and lead from X% to 99%), an effective digestion method was used to determine the content of minor elements. The range of the elements was determined by reference to the grade and chemical composition of casting tin-lead solders and the working conditions of the instrument. Inductively coupled plasma-atomic emission spectrometry (ICP-AES) was used to determine the content of eleven elements, such as antimony, bismuth, iron, arsenic, copper, silver, zinc, aluminum, cadmium, phosphorus and gold. The sample was completely dissolved, appropriate analytical spectral lines were selected, and the interference from the matrix and the interference between the determined elements was studied. The matrix effect was small, and almost no interference between the determined elements was observed. The relative standard deviation from eleven independent experiments varies between 1.0% and 11.3%, and the recovery rate varied from 90.2% to 105%. The proposed method completely meets the analysis requirements for the impurity element analysis in tin-lead solders.