铅(Ⅱ)-钇组稀土(Ⅲ)-BPR-乙酸根-TPB-乙醇体系共显色效应的研究  

THE COCOLORATION EFFECT OF LEAD AND YTTRIUM RARE EARTHS IN THE SYSTEM OF Pb(Ⅱ)-RE(Ⅲ)-BROMOPYROGALLOL RED-TETRADECYLPYRIDINIUM BROMIDE-ACETATE-ETHANOL

作　　者：徐江天 姚家瑜[1] 陈华序 

机构地区：[1]北京钢铁学院化学系

出　　处：《分析化学》1989年第1期20-23,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文报道了铅(Ⅱ)与钇组稀土在Pb(Ⅱ)-RE(Ⅲ)-BPR-Ac^--TPB-EtOH体系中的共显色效应。探索了共显色效应的最佳条件及共显色体系的杂多核配合物的性质。此体系可用于测定铅及钇组稀土,灵敏度高,在0—30μg钇组稀土/25ml或0—60μg铅/25ml的范围内服从比尔定律。测定了杂多核配合物组成并讨论了它的形成机理。研究了外来离子的干扰情况及其分析应用。The cocoloration effect of lead (Ⅱ) and yttrium rare earths (Ⅲ) in the titled system has been reported. The optimum condition for the cocoloration and the properties of the Pb-Y heteropolynuclear coordination compound in this system has been chosen. This cocoloration system can be used for the determination of Pb (Ⅱ) or yttrium rare earths(Ⅲ) with sensitivity of 7.0×10~4(ε). Beer's law is obeyed over the concentration range of 0—30 μg/25 ml for yttrium rare earths and 0—60 μg/25 ml for lead. The composition of the heteropolynuclear coordination compound is 1:1:3 for Pb to Y to BPR. The mechanism of the formation of this heteropolynuclear coordination compound and the interference of foreign ions are also discussed.

关 键 词：铅 钇组稀土 乙醇体系 共显色效应 

分 类 号：O614.33[理学—无机化学]