铕-钆-苯甲酰丙酮-邻二氮菲共发光体系的研究  

STUDY ON THE CO-FLUORESCENCE REACTION SYSTEM OF Eu(Ⅲ)- Gd(Ⅲ)-BA-PHEN AND ITS ANALYTICAL APPLICATION

作　　者：葛红梅[1] 项海波[1] 杨景和[2] 邹华彬[2] 

机构地区：[1]淄博出入境检验检疫局,淄博255031 [2]山东大学化学系

出　　处：《理化检验（化学分册）》2001年第10期436-437,445,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：研究表明 ,在铕 苯甲酰丙酮 邻二氮菲体系中加入Gd3+ 能使体系荧光强度大大增强 ,研究了铕 钆 苯甲酰丙酮 邻二氮菲共发光体系荧光强度的影响因素 ,并利用该体系进行了稀土样品中Eu3+It is reported that co fluorescence effect is observed when trace amounts of Gd(Ⅲ) (0.8～1.5×10 -5 mol·L -1 ) are added to the fluorescence reaction system of Eu(Ⅲ) BA Phen. The fluorescence intensity is enhanced about 10 times. Optimum conditions for the fluorescence reaction are studied. Based on this study, a sensitive method for the determination of trace amounts of Eu(Ⅲ) in rare earth oxides is proposed. Linear relationship between the fluorescence intensities and concentrations of Eu(Ⅲ) is obtained in the range of 1.0×10 -9 ～4.0×10 -7 mol·L -1 of Eu(Ⅲ). The fluorescence measurements are made at λ ex 370nm and λ em 612nm with 1cm quartz absorption cells. The detection limit ( S/N =2) of this method is 5×10 -12 mol·L -1 , which is about 10 4 times lower than that when Gd(Ⅲ) is not added. BA is an abbreviation for benzoylacetone, having its molecular structure as follows: C O CH 2 C O CH 3

关 键 词：共荧光效应 EU^3+ GD^3+ 苯甲酰丙酮 1 10-二氮菲 稀土氧化物 荧光法 铕 钆 测定 共发光体系 

分 类 号：O657.3[理学—分析化学] O614.31[理学—化学]