摘要
研究了锡（Ⅱ）对铕－四环素体系中铕的荧光增敏作用，对其增敏机理进行了探讨，并进一步研究了该体系荧光法测定铕的最佳测定条件。该体系测定铕的检测限为０．０２μｇ／Ｌ，无锡存在时，铕的检测限为０．０９μｇ／Ｌ。锡（Ⅱ）使铕的荧光检测限降低了４．５倍，用一级导数荧光法，使铕的荧光检测限进一步降低到０．０１μｇ／Ｌ。成功地测定了混合稀土氧化物中铕的含量．
In this paper the influence of Sn ion on the fluorescence of europium-tetracycline system was studied, and the fluorescence enhancement mechanism was investigated. The optimum experimental conditions were also proposed. The detection limites for europium in this system are 0.02μg/L in the presence of Sn ion and 0.09μg/L in the absence ofSn ion. The detection limit can also be decreased to 0.01 1μg/L by using the first order derivative fluorophotometry.This system has been successfully used in the determination of europium in the rare earth oxides with satisfatory results.
出处
《冶金分析》
CAS
CSCD
北大核心
1999年第3期16-18,共3页
Metallurgical Analysis
关键词
铕
四环素
锡
导数荧光法
测定
增敏机理
Sn ion, Europium, Tetracycline, Derivative fluorophotometry
