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[Columinescence effect of dysprosium-lanthanum-tiron system and its applicaton]
1Department of Pharmacy, Shandong Medical University, 250012 Jinan.
Abstract:
The columinescence effect of dysprosium-Tiron system by lanthanum was discovered and the characteristics of fluorescence spectra of the system were studied. The effect of the experimental conditions on the fluorescence intensity was defined. By adding suitable amount of lanthanum to dysprosium-Tiron system, the fluorescence intensity can be enhanced by about 40 times. The fluorescence intensity is a linear function of the concentration of dysprosium in the range of 5.0 x 10(-8)-9.0 x 10(-6) mol/L. The detection limit is 1.0 x 10(-10) mol/L. Standard addition method is used for the determination of dysprosium in synthetic rare earth sample with satisfactory results.
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