7-碘-8-羟基喹啉-5-磺酸-溴化十六烷基三甲铵荧光光度法测定痕量镥  

Spectrofluorometric Determination of Lutetium With 7-Iodo-8-hydroxy-quinoline-5-suIfonic Acid and Cetyltrimethyl Ammonium Bromide

作　　者：贺立敏[1] 任英[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《分析化学》1993年第10期1165-1167,共3页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金

摘　　要：本文研究了镥-Ferron-表面活性剂三元荧光体系的荧光特性,各种表面活性剂中以溴化十六烷基三甲铵的增敏效果最佳,与相应的二元体系相比较,灵敏度提高近10倍。镥的测定下限可达8.8ng/ml。本法与P_(507)萃取色谱分离法相结合可用于天然混合稀土氧化物中痕量镥的测定,结果较满意。A fluorescence system of Lu (Ⅱ)-ferron-sufactant has been studied. The fluorescence intensitycan be increased differently by variors surfactants. CTMAB is the best one. The fluorescence intensity of Lu (Ⅲ)-ferron-CTMAB system is increased by ten-fold than that of Lu(Ⅱ)-ferron system. The optimum conditions of the determination of Lu were defined. The determination limit is 8. 8 ng Lu/ml. A method has been established for the determination of Lu in mixture of rare earth oxides after the separation of extraction chro-matography by P507 with satisfactory results.

关 键 词：镥 CTMAB 荧光光度法 

分 类 号：O614.347[理学—无机化学]