Determination of tin in tin-lead alloy by inductively coupled plasma atomic emission spectrometry
HU Changchun, Wang Yanfang, CHEN Zuowang
Wuxi Test Center of Supervision & Inspection on Product Quality, Wuxi 214101, China
摘要：建立电感耦合等离子体原子发射光谱(ICP-OES)法测定锡铅合金中的高含量锡。采用盐酸、硝酸、酒石酸溶解样品，在优化的操作条件下，采用基体匹配和内标相结合的方法消除干扰。选择分析线和内标线分别为Sn 283.999 nm和Y 371.030 nm，用ICP-OES法测定锡铅合金中的锡，以内标法定量。锡的含量在7.36%～89.91%范围内具有良好的线性关系，线性相关系数r=0.9997，检出限为0.06%。该方法用于锡铅合金样品中锡的测定，测定结果的相对标准偏差为0.46%～1.50%(n=11)，加标回收率在88%～114%之间。该方法简便、快速、准确，可用于锡铅合金中锡含量的测定。
Abstract：Determination of high tin content in tin-lead alloys by inductively coupled plasma atomic emission spectrometry(ICP-OES) was established. The sample was dissolved with hydrochloric acid, nitric acid, tartaric acid and the experimental conditions were optimized. Matrix matching method and internal standard method were used to eliminate the interference. The analytical line and internal standard line was Sn 283.999 nm and Y 371.030, respectively, tin in tin-lead alloy was determined by ICP-OES with the internal standard method of quantitative. The mass concentration of tin had good linear relationship in the range of 7.36%-89.91%, the correlation coefficient r was 0.9997, the detection limit of Sn was 0.06%. The method was applied for the determination of Sn, the relative standard deviation of determination results was 0.46-1.50%(n=11). The recoveries of standard addition were 88%-114%. This method is simple, fast and accurate, it is suitable for the determination of high content tin in tin-lead alloy.
Keywords：inductively oupled plasma atomic emission spectrometry; tin-lead alloy; internal standard method; tin
HU C C，WANG Y F，CHEN Z W. Determination of tin in tin-lead alloy by inductively coupled plasma atomic emission spectrometry[J]. Chemical analysis and meterage，2018，27(5)：72-75.