摘要
在磷酸介质中,UO_2^(+2)能催化过氧化氢氧化曙红Y(EY),导致体系的共振荧光强度降低,据此建立了光催化共振荧光法检测水中痕量铀的新方法.实验发现,曙红Y最大的共振荧光波长530 nm.实验中发现,共振荧光降低值ΔF与铀(Ⅵ)浓度在0.4~15.0 ug/L范围内线性关系良好,可以应用标准曲线法测定环境样品中的铀.RSD小于2.77%,加标回收率为95%~103.8%.测定环境水样中铀(Ⅵ),结果良好.
A novel light-catalytic resonance fluorescence method was proposed for the de- termination of trace Uranium （Ⅵ） based on the fact that Uranium can catalyze hydrogen peroxide oxidizing Eosin Y（EY） in phosphoric acid medium, resulting in decreasing of the resonance fluorescence intensity of EY. It was found that the maximum resonance fluores- cence wavelength of EY was 530 nm. There is a good linear relationship between the re- duced intensity value of resonance fluorescence and Uranium （ Ⅵ ） concentration in the concentration range of 0.4- 1.5 μg/L under optimal conditions.This method is quick and simple with a little interference. It can be applied to the determination of trace Uranium （ Ⅵ ） and aqueous samples of environment with satisfactory resuhs.The RSD was less than 2.77% and the recovery rate was 95% -103.8%.
出处
《南华大学学报（自然科学版）》
2016年第3期88-91,共4页
Journal of University of South China：Science and Technology
基金
湖南省科技计划基金资助项目(2015SK20112)
湖南省教育厅科研基金资助项目(14A123)
关键词
光催化
曙红Y
共振荧光法
铀(Ⅵ)
light-catalysis
Eosin Y
resonance fluorescence
Uranium （ VI ）
