摘要
文章对采用三溴偶氮胂分光光度法测定无铅锡基焊料中镧的各项操作条件进行了试验。试样经盐酸、硝酸溶解完全,在硫酸介质中,以盐酸-氢溴酸排除大量锡,在酸性介质中,镧与三溴偶氮胂生成有色络合物,采用分光光度计测定无铅锡基焊料中0.0050%~0.10%的镧含量。
In this paper,the determination of lanthanum in lead-free tin-based solder by tribromoarsenazo spectrophotometry is studied.The sample is completely dissolved by hydrochloric acid and nitric acid,in sulfuric acid medium,removal of large amount of tin by hydrochloric acid hydrobromic acid.In acid medium,the colored complexes of lanthanum with tribromoarsenazo is formed,0.0050%~0.10%lanthanum in lead-free tin-based solder is determined by spectrophotometer。
作者
肖倩
孙彪
XIAO Qian;SUN Biao(Tin Products Manufacturing Co.,Ltd.of YTCL.,Kunming 650501,China)
出处
《湖南有色金属》
CAS
2020年第2期71-74,共4页
Hunan Nonferrous Metals
基金
云南省重大科技专项计划(2018ZE004)。
关键词
无铅锡基焊料
镧
分光光度法
lead-free tin-based solder
lanthanum
spectrophotometry
作者简介
肖倩(1986-),女,助理工程师,主要从事分析测试技术、焊料合金研究工作。
