物理化学学报
物理化學學報
물이화학학보
ACTA PHYSICO-CHIMICA SINICA
2000年
3期
269-272
,共4页
闫文飞%廖华%施鼐%周维金%吴瑾光%徐光宪
閆文飛%廖華%施鼐%週維金%吳瑾光%徐光憲
염문비%료화%시내%주유금%오근광%서광헌
萃取%反胶团%微乳%荧光光谱
萃取%反膠糰%微乳%熒光光譜
췌취%반효단%미유%형광광보
Extraction%Reversed micelle%Microemulsion%Fluorescence
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.
