Abstract
The effect of micelles of block copolymers of nonionic surfactants (NIS) on the fluorescence properties of the Eu3+–thenoyltrifluoroacetone (TTA)–1,10-phenanthroline (Phen) system was studied. It was shown that the introduction of micelles of nonionic surfactants increases the chelate fluorescence intensity by an order of magnitude. The limit of detection of europium using the TTA–Phen–NIS system depends on the hydrophobicity of nonionic surfactants. The sensitization of Eu3+luminescence by the gadolinium ion leads to a further decrease in DL by two orders of magnitude (1 × 10–11g/mL). The procedure of europium determination developed in this work was approved using samples of biological (sea fish) and inorganic (CaSO4preparation) origin.
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Shtykov, C.N., Smirnova, T.D. & Molchanova, Y.V. Synergistic Effects in the Europium(III)–Thenoyltrifluoroacetone–1,10-Phenanthroline System in Micelles of Block Copolymers of Nonionic Surfactants and Their Analytical Applications. Journal of Analytical Chemistry 56, 920–924 (2001). https://doi.org/10.1023/A:1012305310980
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DOI: https://doi.org/10.1023/A:1012305310980