摘要
本文应用流动注射分析技术,基于CyDTA对钆、钇的三氯偶氮胂络合物取代反应速率的不同,选择同一长度不同内径的反应盘管,并通过所推导的计算公式,实现了钆-钇混合物中单一稀土的测定。对于不同比例的钆、钇混合样品(Gd_2O_3:Y_2O_3=1:8～8:1),测定的回收率在90％～110％之间。
The simultaneous determination of Gd and Y by flow injection spectrophotometry has been established.Under the selected experimental conditions,two different reaction coils have been adopted, it causes enough rate difference in the ligand substitution reaction of Gd(TCA)_2 and Y(TCA)_2 with CyDTA, and the formulas to calculate Gd and Y have been deduced. The method has been used for the determination of Gd and Y in a series of synthetic samples with a content ratio of Gd:Y in the range of 1:8～8:1. The recovery was 90％～110％.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1992年第4期399-402,共4页
Chinese Journal of Analytical Chemistry
关键词
速差动力学
钆
钇
分光光度法
FIA
Flow injection analysis, Rate differential kinetic method, Gadolinium, Yttrium, Spectrophotometry.
