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Chromium(III)-Selective Electrodes Based on Titanium Dichalcogenides Intercalated with Chromium

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Abstract

Solid-contact chromium-selective film electrodes were prepared on the basis of titanium diselenide and titanium ditelluride intercalated with chromium. It was found that the titanium diselenide–based electrode with the lowest concentration of the intercalant (Cr0.1TiSe2) exhibits the best properties and provides the determination of 5 × 10–5–1 × 100M chromium(III) in the pH range 2.75–4.7. The slope of the electrode function for all chromium-selective electrodes depends on the pH of the solution and is close to the theoretical slope for the singly charged Cr(OH)+ 2 ion. It was demonstrated that chromium-selective electrodes can be used as indicator electrodes in determining chromium(III) by direct titration with the potentiometric detection of the titration end-point using EDTA and KMnO4as titrants.

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  1. Ural State University, pr. Lenina 51, Yekaterinburg, 620083, Russia

    T. V. Velikanova, A. N. Titov & M. A. Malkova

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  1. T. V. Velikanova
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  2. A. N. Titov
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  3. M. A. Malkova
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Velikanova, T.V., Titov, A.N. & Malkova, M.A. Chromium(III)-Selective Electrodes Based on Titanium Dichalcogenides Intercalated with Chromium. Journal of Analytical Chemistry 56, 666–670 (2001). https://doi.org/10.1023/A:1016752624403

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