摘要
在0.10～0.30 mol·L^(-1)盐酸介质中,锡与DBH-PF、乳化剂OP形成三元络合物。其最大吸收位于520nm处,表观摩尔吸光系数为1.3×10~5,锡含量在0～11μg/25ml范围内符合比耳定律。应用于铝青铜、铅黄铜中微量锡的测定。
In HC1 solution (0.10～0.30 mol·L^(-1)), Sn, DBH-PF and emulsifier OP form a ternary complex. The maximum absorbance is situated at 520nm; the observed mole absorption coefficient is 1.3×10^(-5); the Beer's law is obeyed when Sn content is in the range of 0～11μg/25ml. The method may be applied to determine the micro amount of Sn in albronze and in lead brass.
关键词
吸光光度法
锡
铜合金
微量分析
DBH-PF (dibromohydroxyl phenyl fluoreseinone)
Spectrophotometry
Tin
