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Fluorescent detection of decamethoxine by reaction with eosin Y in medicines

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The influence of cationic, anionic, and nonionic surfactant solutions on the nature of the fluorescence spectra of reagents of different charges and hydrophobicity in aqueous solutions has been studied. The increase in the surfactant analytical signal with increasing contribution of the role of electrostatic interactions between the reagent particle and ionic surfactant has been shown. The observed effect is explained by the implementation of charge matching in the interaction of surfactants with the reagents. Hydrophobic binding of oppositely charged reagent particles and surfactants further enhances the effect of charge matching. The elimination of the detected effect for reagents that exhibit weak solvatochromic properties has been shown. The conditions for detecting the content of hydrophobic organic substances of cationic nature by reaction with eosin Y have been proposed.

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An increase in the surfactant analytical signal with an increased charge of the counter ion reagent, manifestation of the charge matching effect, development of the method for detecting hydrophobic organic substance of cationic nature by reaction with the fluorescent reagent is shared in this article.

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Correspondence to Viktoriia Klovak.

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Klovak, V., Kulichenko, S. & Lelyushok, S. Fluorescent detection of decamethoxine by reaction with eosin Y in medicines. J Chem Sci 133, 117 (2021).

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