Determination of Energetic and Geometric Properties of Plant Roots Specific Surface from Adsorption/Desorption Ishoterm

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Background and Aims: Structure and composition of plant roots surfaces are extremely complicated. Water vapor adsorption/desorption isotherm is a powerful tool to characterize such surfaces. The aim of this paper is to present theoretical approach for calculating roots surface parameters as adsorption energy, distribution of surface adsorption centers, as well as roots geometric and structure parameters as surface fractal dimension, nanopore sizes and size distributions on example of experimental isotherms of roots of barley taken from the literature. This approach was up to date practically not applied to study plant roots. Methods: Simplest tools of theoretical analysis of adsorption/desorption isotherms are applied. Results: Parameters characterizing energy of water binding, surface complexity and nanopore system of the studied roots were calculated and compared to these of the soils. Some possible applications of root surface parameters to study plant-soil interactions are outlined. Conclusions: Physicochemical surface parameters may be important for characterizing root surface properties, their changes in stress conditions, as well as for study and model plant processes. Physicochemical and geometrical properties of plant roots differ from these of the soils.

References

[1] G. Jozefaciuk and M. Lukowska, “New Method for Measurement of Plant Roots Specific Surface,” American Journal of Plant Sciences, Vol. 4, No. 5, 2013, pp. 1088-1094. doi:10.4236/ajps.2013.45135

[2] G. L. Aranovich, “The Theory of Polymolecular Adsorption,” Langmuir, Vol. 8, No. 2, 1992, pp. 736-739.
doi:10.1021/la00038a071

[3] S. Brunauer, P. H. Emmet and E. Teller, “Adsorption of Gases in Multimolecular Layers,” Journal of American Chemical Society, Vol. 60, No. 2, 1938, pp. 309-314.
doi:10.1021/ja01269a023

[4] M. Jaroniec and P. Brauer, “Recent Progress in Determination of Energetic Heterogeneity of Solids from Adsorption Data,” Surface Science Reports, Vol. 6, No. 2, 1986, pp. 65-117. doi:10.1016/0167-5729(86)90004-X

[5] M. Jaroniec, W. Rudzinski, S. Sokolowski and R. Smarzewski, “Determination of Energy Distribution Function from Observed Adsorption Isotherms,” Journal of Colloid and Polymer Science, Vol. 253, No. 2, 1976, pp. 164-166. doi:10.1007/BF01775683

[6] P. Kowalczyk, H. Tanaka, H. Kanoh and K. Kaneko, “Adsorption Energy Distribution Function from the Aranovich-Donohue Lattice Density Functional Theory,” Langmuir, Vol. 20, No. 6, 2004, pp. 2324-2332.
doi:10.1021/la035748k

[7] S. J. Gregg and K. S. W. Sing, “Adsorption, Surface Area and Porosity,” Academic Press, London, New York, 1967.

[8] J. Oscik, “Adsorption,” Ellis Horwood, Chichester, 1982.

[9] B. B. Mandelbrot “The Fractal Geometry of Nature,” Freeman, San Francisco, 1983.

[10] Y. A. Pachepsky, T. A. Polubesova, M. Hajnos, Z. Sokolowska and G. Jozefaciuk, “Fractal Parameters of Pore Surface Area as Influenced by Simulated Soil Degradation,” Soil Science Society of America Journal, Vol. 59, No. 1, 1995, pp. 68-75.
doi:10.2136/sssaj1995.03615995005900010010x

[11] Y. A. Pachepsky, J. W. Crawfordf and W. J. Rawls, “Fractals in Soil Science,” Elsevier, Amsterdam, 2000.

[12] P. Pfeifer and M. Obert, “Fractals Basic Concepts and Terminology,” In: D. Avnir, Ed., The Fractal Approach to Heterogeneous Chemistry, J Willey and Sons, Hoboken, 1989, pp. 11-43.

[13] M. Jaroniec, “Evaluation of the Fractal Dimension from a Single Adsorption Isotherm,” Langmuir, Vol. 11, No. 6, 1995, pp. 2316-2317. doi:10.1021/la00006a076

[14] A. V. Neimark, “A New Approach to Determination of the Surface Fractal Dimension of Porous Solids,” Physica Acta, Vol. 191, No. 1-4, 1992, pp. 258-262.
doi:10.1016/0378-4371(92)90536-Y

[15] A. B. Jarzebski, J. Lorenc and L. Pajak, “Surface Fractal Characteristics of Silica Aerogels,” Langmuir, Vol. 13, No. 5, 1997, pp. 1031-1035. doi:10.1021/la960011z

[16] R. Rouquerol, D. Avnir, C. W. Fairbridge, D. H. Everett, J. H. Haynes, N. Pernicone, J. D. F. Ramsay, K. S. W. Sing and K. K. Unger, “Recommendations for the Characterization of Porous Solids,” Pure and Applied Chemistry, Vol. 66, No. 8, 1994, pp. 1739-1758.
doi:10.1351/pac199466081739

[17] K. S. W. Sing, “Reporting Physisorption Data for Gas/ Solid Systems with the Special Reference to the Determination of Surface Area and Porosity,” Pure and Applied Chemistry, Vol. 54, No. 11, 1982, pp. 2201-2218.

[18] D. T. Clarkson, “Root Structure and Sites of Ion Uptake,” In: Y. Weisel, A. Eshel and U. Kafkafi, Eds., Plant Roots The Hidden Half, Marcel Dekker, New York, 1991, pp. 351-373.

[19] N. Carpita, D. Sabulase, D. Montezinos and D. P. Delmer, “Determination of the Pore Size of Cell Walls of Living Plant Cells,” Science, Vol. 205, No. 4411, 1979, pp. 144-147. doi:10.1126/science.205.4411.1144

[20] A. W. Robards, “Electron Microscopy and Plant Ultra Structure,” McGraw-Hill, New York, 1970.