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An ion-selective potentiometric sensor for hexafluoroarsenate

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Abstract

Ion-selective potentiometric sensors (ion selective electrodes, ISEs) based on tetradecylphosphonium hexafluoroarsenate are developed for the determination of AsF −6 ions. Their main parameters, such as selectivity, linearity range of response, detection limit, and also the effect of pH on the readings of electrodes are evaluated. The developed electrode demonstrated high selectivity to the AsF −6 acido-complex in the presence of various anions. The detection limit goes up with increasing concentration of HF; for fluoridefree neat solutions of LiAsF6, it is 3 × 10−7, pAsF6 = 6.52; at the concentrations of HF 0.1 and 4 M, it is 1.5 × 10−6 M, pAsF6 = 5.82, and 7 × 10−6 M, pAsF6 = 5.15, respectively.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    A. V. Kopytin & E. G. Il’in

  2. Russian Mendeleev University of Chemical Technology, Miusskaya pl. 9, Moscow, 125047, Russia

    A. F. Zhukov

Authors
  1. A. V. Kopytin
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  2. A. F. Zhukov
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  3. E. G. Il’in
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Correspondence to A. V. Kopytin.

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Original Russian Text © A.V. Kopytin, A.F. Zhukov, E.G. Il’in, 2015, published in Zhurnal Analiticheskoi Khimii, 2015, Vol. 70, No. 4, pp. 407–410.

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Kopytin, A.V., Zhukov, A.F. & Il’in, E.G. An ion-selective potentiometric sensor for hexafluoroarsenate. J Anal Chem 70, 485–487 (2015). https://doi.org/10.1134/S1061934815020082

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  • DOI: https://doi.org/10.1134/S1061934815020082

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