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Selective complexation of catechols with Fe+3 ions in determining caffeine in tea by high-performance thin-layer chromatography

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Abstract

A procedure was developed for determining caffeine by high-performance thin-layer chromatography on PTSKh-AF-V-UF plates with the methanol-ethyl acetate (1: 3) mobile phase and densitometric detection (254 nm). It was shown that the use of the selective complexation of catechols with Fe+3 cations eliminated their interfering effect in the analysis of different samples of black and green tea.

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Authors and Affiliations

  1. Department of Chemistry, St. Petersburg State University, Universitetskii pr. 26, St. Petersburg, 198504, Russia

    L. A. Kartsova & A. V. Alekseeva

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  1. L. A. Kartsova
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  2. A. V. Alekseeva
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Original Russian Text © L.A. Kartsova, A.V. Alekseeva, 2009, published in Zhurnal Analiticheskoi Khimii, 2009, Vol. 64, No. 9, pp. 954–958.

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Kartsova, L.A., Alekseeva, A.V. Selective complexation of catechols with Fe+3 ions in determining caffeine in tea by high-performance thin-layer chromatography. J Anal Chem 64, 930–934 (2009). https://doi.org/10.1134/S106193480909010X

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  • DOI: https://doi.org/10.1134/S106193480909010X

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