表面活性剂存在下铽-钪-乙酰水杨酸共发光荧光体系的研究  

STUDY ON THE CO-FLUORESCENT REACTION SYSTEM OF Tb(Ⅲ)-Sc(Ⅲ)-ACETYLSALICYLIC ACID IN THE PRESENCE OF CTMAB

作　　者：尹洪宗[1] 崔彦[1] 孙衍华[1] 朱贵云[2] 司志坤 

机构地区：[1]山东农业大学基础部,泰安271018 [2]山东大学化学系

出　　处：《理化检验（化学分册）》1998年第12期552-552,556,共2页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：研究发现钪与铽-乙酰水杨酸配合物体系产生强烈的共发荧光效应,在最佳条件下,可使原体系的荧光强度增强40倍.讨论了表面活性剂和协配体对共发光体系环境的改善.利用该体系测定合成稀土样品和包头稀土标样中的铽,结果满意.加标回收率在86.7%～96.6%.并对发光的机理和表面活性剂的作用进行了探讨.It is found that the fluorescence intensity of the binary complex Tb (Ⅲ)-acetylsalicylic acid (AcSA) is enhanced by about 40 times in the presence of scandium (Ⅲ). It is shown by experiments that the enhancement of fluorescence intensity is due to the formation of a ternary complex Tb(Ⅲ)-Sc(Ⅲ)-AcSA, and that the stability of the fluorescence is. remarkably improved by the addition of CTMAB and EDTA. The proposed method has been used in the determination of Tb(Ⅲ) in some artificial and standard samples of rare-earth oxides giving satisfactory results. Standard addition tests have been made giving a recovery of 86. 7%-96. 6%.

关 键 词：AcSA CTMAB 铽 测定 稀土氧化物 荧光 钪 

分 类 号：O614.341[理学—无机化学]