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Calculation of the portion of free water molecules in water solutions by means of spectral analysis

  • Molecular Biophysics
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Abstract

In this paper we present the results of spectral studies of water solutions and water at different temperatures. The calculation method for estimation of the portion of free water molecules is offered. The method is based on the analysis of transmissions spectra features in the terahertz region. The calculation using the proposed method shows that the portion of free water molecules at room temperature ranges from 10 to 16% for a variety of water solutions. In case of pure water, the temperature increase from 20 to 50°C results in the increase of the free molecule fraction from 12 to 19%. Moreover, the increase in the number of free water molecules within a specified temperature range exhibits significant nonuniformity: the most intense growth was observed in the range of 30–40°C. This is particularly interesting because this temperature range includes the optimum temperatures for the existence of warm-blooded animals.

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Authors and Affiliations

  1. Institute of Cell Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia

    N. V. Penkov, N. E. Shvirst, V. A. Yashin & E. E. Fesenko

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  1. N. V. Penkov
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  2. N. E. Shvirst
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  3. V. A. Yashin
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  4. E. E. Fesenko
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Corresponding author

Correspondence to N. V. Penkov.

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Original Russian Text © N.V. Penkov, N.E. Shvirst, V.A. Yashin, E.E. Fesenko, 2013, published in Biofizika, 2013, Vol. 58, No. 6, pp. 942–946.

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Penkov, N.V., Shvirst, N.E., Yashin, V.A. et al. Calculation of the portion of free water molecules in water solutions by means of spectral analysis. BIOPHYSICS 58, 739–742 (2013). https://doi.org/10.1134/S0006350913060171

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  • DOI: https://doi.org/10.1134/S0006350913060171

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