摘要
镧与铽-乙酰基水杨酸体系产生强烈的共发荧光现象.在最佳条件下可使原体系的荧光强度增强350倍.讨论了表面活性剂和协配体存在下对共发光体系环境的改善.对共发光的机理和表面活性剂的作用进行了探讨.利用该体系测定了合成稀土样品和包头稀土标准样品中的铽,结果满意.标准加入回收率在88.8%~103.1%之间.
A study of the enchancement effect on the fluorescence intensity of terbium acetylsalicylic acid system by lanthanum has been carried out. In the present of the element,the fluorescence of the Tb ASA system was enhanced by factor of about 350. The standard addition method was used for the determination of terbium in synthetic sample and standard sample and gave satisfactory results. The recovery of terbium was in the range 88.8% ̄103.1%. The fluorescence enhancement mechanism and effect of surfactant were discussed.
出处
《分析科学学报》
CAS
CSCD
1998年第3期208-211,共4页
Journal of Analytical Science
关键词
铽
镧
乙酰基水杨酸
表面活性剂
共发光
测定
Terbium, Lanthanum, Acetylsalicylic acid, Surfactant, Fluorescence enhancement system