Studies on Fluorescence Enhancement of Rare Earths──The Fluorescence Enhancement of Europium-2-(2-diphenylacetyl) indan-1,3-dione-cetyltrimethylammonium Bromide System by Ln3+

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (11): 1615.

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Studies on Fluorescence Enhancement of Rare Earths──The Fluorescence Enhancement of Europium-2-(2-diphenylacetyl) indan-1,3-dione-cetyltrimethylammonium Bromide System by Ln³⁺

SI Zhi-Kun, ZHU Gui-Yun, ZHANG Bin, JIANG Wei

Department of Chemistry, Shandong University, Jinan, 250100

Received:1994-01-12 Revised:1994-04-14 Online:1994-11-24 Published:1994-11-24

Abstract

Abstract: Afluorescence enhancenient phenomenon shown by adding La, Gd, Tb, Lu, Y, or Sc ion to Eu-2-(2-diphenylacetyl)indan-1, 3-dione (DPN)-cetyltrimethylammonium bromide(CTMAB) system was observed. In the presence of above enhancing ions, the fluorescence intensity of the system can be increased about 10, 130, 30, 50, 52 or 20-fold, respectively than that of the system containing no enhancing ion, and it was a linear function of theconcentration of europium in the range 1.0×10^-10 6.0×10^-7mol/L.The detection limitwas 6.0×10^-12mol/L.The system was used for the spectrofluorimetric determination of europium in the rare earth oxides and gave satisfactory results.

Key words: Europium, 2-(2-Diphenylacetyl)indan-1,3-dione, Fluorescence enhancement

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SI Zhi-Kun, ZHU Gui-Yun, ZHANG Bin, JIANG Wei. Studies on Fluorescence Enhancement of Rare Earths──The Fluorescence Enhancement of Europium-2-(2-diphenylacetyl) indan-1,3-dione-cetyltrimethylammonium Bromide System by Ln³⁺[J]. Chem. J. Chinese Universities, 1994, 15(11): 1615.

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Studies on Fluorescence Enhancement of Rare Earths──The Fluorescence Enhancement of Europium-2-(2-diphenylacetyl) indan-1,3-dione-cetyltrimethylammonium Bromide System by Ln³⁺

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