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A new luminescence method for determining dysprosium in the presence of terbium |
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| Authors: | S B Meshkova A V Kiriyak M P Tsvirko V P Gorodnyuk |
| Institution: | (1) Bogatsky Physicochemical Institute, National Academy of Sciences of Ukraine, Lyustdorfskaya doroga 86, Odessa, 65080, Ukraine;(2) Institute of Chemistry and Environmental Protection, Jan Dlugosz University, ul. Armii Krajowej 13/15, Czestochowa, 42-200, Poland;(3) National Research Center for Monitoring the Ozonosphere, Belarussian State University, ul. Kurchatova 7, Minsk, 220067, Belarus |
| Abstract: | The new luminescence method for determining dysprosium in the presence of terbium is developed based on the difference in the lifetimes of dysprosium and terbium in complexes with 3-(6-benzodioxanyl)pyrazole-5-carboxylic acid (τ = 6 and 910 μs, respectively). The possibility of determining the short-lived and weakly luminescent dysprosium(III) ion in the presence of long-living and intensively luminescent terbium(III) was demonstrated for the first time using time-resolved luminescence. The developed method was used to determine dysprosium in luminescent materials doped with both lanthanides. |
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