环烷酸铕环烷酸钠微乳体系的荧光光谱  

Fluorescence Spectra of Europium and Sodium Naphthenate Microemulsion System

作　　者：闫文飞[1] 廖华[1] 施鼐[1] 周维金[1] 吴瑾光[1] 徐光宪[1] 

机构地区：[1]北京大学香港大学稀土材料和生物无机化学联合实验室

出　　处：《物理化学学报》2000年第3期269-272,共4页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金!(39730160);国家重点基础研究发展规划项目!(G1998061311)

摘　　要：The microemulsion behaviors of europium and sodium salts of naphthenic acid were studied using fluorescence measurements. It was found that 5D0 decay coefficient of europium was 2.08 ms-1 for 100%europium naphthenate, and the coefficients were 1.56, 1.08 and 0.83 ms-1 for 75%, 50% and 20%europium salt of sodium saponified acid respectively. It can be seen that the decay coefficients were also 2.08 ms-1 at the inflexion of curves in the 75%, 50%and 20%europium naphthenate systems with water content. The data reveal that, if there is enough water in the microemulsion, the coordination condition of europium ion in the above microemulsion is similar. It was also found that, for the 75%、60%、50%、40%and 20%europium naphthenate microemulsion systems, the relative fluorescence intensities sharply decrease with the increase of water content and reach a steady values at the same water content.The microemulsion behaviors of europium and sodium salts of naphthenic acid were studied using fluorescence measurements. It was found that 5D0 decay coefficient of europium was 2.08 ms-1 for 100%europium naphthenate, and the coefficients were 1.56, 1.08 and 0.83 ms-1 for 75%, 50% and 20%europium salt of sodium saponified acid respectively. It can be seen that the decay coefficients were also 2.08 ms-1 at the inflexion of curves in the 75%, 50%and 20%europium naphthenate systems with water content. The data reveal that, if there is enough water in the microemulsion, the coordination condition of europium ion in the above microemulsion is similar. It was also found that, for the 75%、60%、50%、40%and 20%europium naphthenate microemulsion systems, the relative fluorescence intensities sharply decrease with the increase of water content and reach a steady values at the same water content.

关 键 词：萃取 荧光光谱 铕离子 环烷酸铕 环烷酸钠 

分 类 号：O644[理学—物理化学]