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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Original Russian Text © S.B. Meshkova, A.V. Kiriyak, M.P. Tsvirko, V.P. Gorodnyuk, 2008, published in Zhurnal Analiticheskoi Khimii, 2008, Vol. 63, No. 9, pp. 920–924.
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Meshkova, S.B., Kiriyak, A.V., Tsvirko, M.P. et al. A new luminescence method for determining dysprosium in the presence of terbium. J Anal Chem 63, 840–843 (2008). https://doi.org/10.1134/S1061934808090062
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DOI: https://doi.org/10.1134/S1061934808090062