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Variation in the sorption energy of esters ofn-perfluoroalkanoic acids on chromatographic phases of different polarity

  • Physical Chemistry
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Russian Chemical Bulletin Aims and scope

Abstract

The contributions of methylene and difluoromethylene units of six homologous and six pseudohomologous series of esters ofn-perfluoroalkanoic acids to the differential molar free energy, enthalpy, and entropy of sorption on stationary phases of different polarities in glass capillary columns under isothermal conditions were calculated. The features observed characterize the peculiarities of the sorption of esters of polyfluorinated carboxylic acids on phases of different polarities and make it possible to estimate the enthalpy and entropy contributions to the energy of sorption of the esters, the effect of the temperature of the analysis and the length of the alkyl or polyfluoroalkyl chain on the retention parameters of the compound analyzed. The inversion of the retention order of trifluoroacetates and pentafluoropropionates in XE-60 nitrile-containing phase was found.

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References

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Authors and Affiliations

  1. Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 20 ul. S. Kovalevskoi, 620219, Ekaterinburg, Russian Federation

    E. P. Promyshlennikova, V. E. Kirichenko & K. I. Pashkevich

  2. Institute of Food Substances, Russian Academy of Sciences, 28 ul. Vavilova, 117813, Moscow, Russian Federation

    D. N. Grigor'eva & R. V. Golovnya

Authors
  1. E. P. Promyshlennikova
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  2. V. E. Kirichenko
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  3. K. I. Pashkevich
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  4. D. N. Grigor'eva
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  5. R. V. Golovnya
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Additional information

Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2051–2055, December, 1993.

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Promyshlennikova, E.P., Kirichenko, V.E., Pashkevich, K.I. et al. Variation in the sorption energy of esters ofn-perfluoroalkanoic acids on chromatographic phases of different polarity. Russ Chem Bull 42, 1963–1967 (1993). https://doi.org/10.1007/BF00698875

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  • DOI: https://doi.org/10.1007/BF00698875

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