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Studying the Sorption of Certain Benzimidazoles on Octadecyl Silica Gel from Water–Acetonitrile Solutions via Liquid Chromatography

  • PHYSICAL CHEMISTRY OF SURFACE PHENOMENA
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Abstract

The effect the composition of a water–acetonitrile eluent has on the sorption of benzimidazoles by octadecyl silica gel is studied using the Snyder–Soczewinski model. Three-parameter equations associating retention factors and certain physicochemical characteristic of the molecules of benzimidazoles are obtained via linear regression analysis. Standard changes in the enthalpy of the transfer of benzimidazoles from the water–acetonitrile phase to the layer of octadecyl silica gel and entropic components of the process are calculated from the temperature dependences of the retention factors. The enthalpy–entropy dependences of sorption are discussed.

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ACKNOWLEDGMENTS

This work was supported by the Russian Foundation for Basic Research, project no. 16-33-00707 mol_a and by grant no. 4.5883.2017/8.9 within the state assignment of the Ministry of Education and Science of the Russian Federation.

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Authors and Affiliations

  1. Samara National Research University, 443086, Samara, Russia

    A. A. Yadrova, R. V. Shafigulin, A. V. Bulanova, A. A. Golov & Z. P. Belousova

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  1. A. A. Yadrova
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  2. R. V. Shafigulin
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  3. A. V. Bulanova
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  4. A. A. Golov
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  5. Z. P. Belousova
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Correspondence to R. V. Shafigulin.

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Translated by E. Boltukhina

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Yadrova, A.A., Shafigulin, R.V., Bulanova, A.V. et al. Studying the Sorption of Certain Benzimidazoles on Octadecyl Silica Gel from Water–Acetonitrile Solutions via Liquid Chromatography. Russ. J. Phys. Chem. 92, 1572–1582 (2018). https://doi.org/10.1134/S0036024418080307

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  • DOI: https://doi.org/10.1134/S0036024418080307

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