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A model of the equilibrium adsorption layer in chromatography. Communication 4. Characteristic properties of elution for the sorption isotherms a=kc1/n

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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    Analytical and numerical solutions made within the framework of the equilibrium adsorption layer model have been used to discuss the elution characteristics of the sorption curve a=kc1/n (n > 1).

  2. 2.

    A systematic pattern previously established for a concave sorption curve has been confirmed: namely, that the fronts of the real developing curves approach those of ideal chromatography as the relative length of the chromatographic column increases. For ℓ/Le > 150–250, the mass exchange processes in the column are described quite satisfactorily by the theory of ideal chromatography, and the fundamental equation of the equilibrium sorption layer model becomes that of the equation of ideal chromatography.

  3. 3.

    For ℓ/Le > 10 a stable congruence is observed between the envelope of the maxima of the chromatographic peaks obtained for different size eluate samples and the isoplane of ideal chromatography. Practical recommendations are made for performing an experiment to determine the sorption isotherms in real chromatography using the Huber method.

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Literature cited

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Authors and Affiliations

  1. Institute of Physical Chemistry, Academy of Sciences of the USSR, Moscow

    A. V. Larin

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  1. A. V. Larin
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 736–740, April, 1987.

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Larin, A.V. A model of the equilibrium adsorption layer in chromatography. Communication 4. Characteristic properties of elution for the sorption isotherms a=kc1/n . Russ Chem Bull 36, 665–669 (1987). https://doi.org/10.1007/BF00962293

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  • DOI: https://doi.org/10.1007/BF00962293

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