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在研究稀土多元络合物荧光体系时发现,Lu~(3+)的加入,使Eu—TTA—Phen—Triton X-100体系的荧光强度大大增加。这种现象类似于共显色效应。为此,我们将其命名为共发光效应。本文详细研究了Eu—Lu—TTA—Phen—Triton X-100体系的共发光效应的形成条件和影响因素。该效应可用于痕量铕的测定,其检出限为1.0×10~(-11)M。用标准加入法研究了稀土混合物中痕量铺的测定。结果比较满意。
In the study of rare earth multi-complex fluorescence system, we found that the fluorescence intensity of Eu-TTA-Phen-Triton X-100 system is greatly increased by the addition of Lu 3+. This phenomenon is similar to the co-coloring effect. To this end, we named it the co-luminescent effect. In this paper, the formation conditions and influencing factors of Eu-Lu-TTA-Phen-Triton X-100 system were studied in detail. The effect can be used for the determination of trace europium, the detection limit of 1.0 × 10 ~ (-11) M. The standard addition method was used to investigate the determination of trace amounts in rare earth mixtures. The result is satisfactory.