Abstract
The complex dielectric spectrum of aqueous solutions (10% w/w) of fulvic and polymaleic acids has been measured at various frequencies between 1 MHz and 40 GHz. Similar to pure water a dispersion/dielectric loss region emerges in the range above 1 GHz. The measured spectra have been analytically represented by the empirical Cole-Cole relaxation spectral function to yield values for the extrapolated high- and low-frequency permittivity, the principal dielectric relaxation time, the relaxation time distribution parameter and the specific electric d.c. conductivity. In correspondence with aqueous solutions of synthetic organic molecules, the low-frequency permittivity of the fulvic acid/water mixtures is reduced, and the principal dielectric relaxation time is enhanced with respect to the pure water value. As with solutions of polyacrylic acid no solute contributions to the real part of the dielectric spectrum are found.
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Oliver, B.G., E.M. Thurman and R.L. Malcolm. Geochim. Cosmochim. Acta 47:2031 (1983).
Aiken, G.R., D.M. McKnight, R.L. Wershaw and P. McCarthy. Humic Substances in Soil, Sediment and Water. Geochemistry, Isolation and Characterization (New York: John Wiley, 1985).
Ziechmann, W. Huminstoffe (Weinheim: Verlag Chemie, 1980).
Wershaw, R.L. J. Contaminant Hydrol. 1:29 (1986).
Bracewell, J.M., G.W. Robertson and D.J. Welch. J. Anal. Appl. Pyrolysis 2:239 (1980).
Spiteller, M. and M. Schnitzer. J. Soil Sci. 34:525 (1983).
Martin, F., F.J. Gonzalez-Vila, and H.-D. Lüdemann. Z. Naturforsch. 39c:244 (1984).
Anderson, H.A. and J.D. Russell. Nature 260:597 (1976).
Young, S.D., B.W. Bache, D. Welch, and H.A. Anderson. J. Soil Sci. 11:597 (1981).
Kaatze, U. Advan. Mol. Relaxation Processes 7:71 (1975).
Kaatze, U. and R. Pottel. Colloques internationaux du C.N.R.S. 246:111 (1976).
Kaatze, U., O. Göttmann, R. Podbielski, R. Pottel, and U. Terveer. J. Phys. Chem. 82:112 (1978).
Pottel, R., U. Kaatze, and St. Müller. Ber. Bunsenges. Phys. Chem. 82:1086 (1978).
Kaatze, U. Progr. Colloid Polymer Sci. 65:214 (1978).
Pottel, R., K.-D. Göpel, R. Henze, U. Kaatze, and V. Uhlendorf. Biophys. Chem. 19:233 (1984).
Kaatze, U., A. Dittrich, K.-D. Göpel, and R. Pottel. Chem. Phys. Lipids 35:279 (1984).
Kaatze, U. and R. Pottel. J. Mol. Liquids 30:115 (1985).
Kaatze, U., O. Göttmann, R. Podbielski, and R. Pottel. J. Mol. Liquids 37:127 (1988).
Schnitzer, M. and S.I.M. Skinner. Soil Sci. 105:392 (1968).
Martin, F. and F.J. Gonzalez-Vila. Z. Pflanzenernähr. Bodenk. 146:409 (1983).
Martin, F. and F.J. Gonzalez-Vila. Chem. Geol. 67:353 (1988).
Braun, D. and J. Pomakis. Makromol. Chem. 175:1411 (1974).
Schnitzer, M. and S.V. Khan. Humic Substances in the Environment (New York: Marcel Dekker, 1972).
Kaatze, U. and K. Giese. J. Phys. E: Sci. Instrum. 13:133 (1980).
Kaatze, U. and D. Woermann. Ber. Bunsenges. Phys. Chem. 86:81 (1982).
Göttmann, O. and A. Dittrich. J. Phys. E: Sci. Instrum. 17:279 (1984).
Pottel, R. Ber. Bunsenges. Phys. Chem. 69:363 (1965).
Kaatze, U. Mikrowellen Magazin 6:46 (1980).
Kaatze, U. and K. Giese. J. Mol. Liquics 36:15 (1987).
Kaatze, U. and V. Uhlendorf. Z. Phys. Chem. N. F. 126:151 (1981).
Kaatze, U. Chem. Phys. Lett. 132:291 (1986).
Debye, P. Polare Molekeln (Leipzig: Hirzel, 1929).
Cole, K.S. and R.H. Cole. J. Chem. Phys. 9: 341 (1941).
Uhlendorf, V. Messungen der dielektrischen Relaxation wässriger Polyelektrolyt-Lösungen zwischen 5 MHz und 40 GHz, Diplom-Thesis (Göttingen: University, 1978).
Pottel, R. and U. Kaatze. Ber. Bunsenges. Phys. Chem. 73:437 (1969).
Kaatze, U. and W.-Y. Wen. J. Phys. Chem. 82:109 (1978).
Kaatze, U., H. Gerke and R. Pottel. J. Phys. Chem. 90: 5464 (1986).
Kaatze, U., R. Pottel and P. Schmidt. J. Phys. Chem. 92:3669 (1988).
Akerlöf, G. and A.O. Short. J. Am. Chem. Soc. 58:1241 (1936).
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© 1991 Springer-Verlag
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Gonzalez-Vila, F.J., Kaatze, U., Lentz, H., Martin, F., Pottel, R. (1991). Dielectric spectroscopy of aqueous solutions of fulvic acids. In: Allard, B., Borén, H., Grimvall, A. (eds) Humic Substances in the Aquatic and Terrestrial Environment. Lecture Notes in Earth Sciences, vol 33. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0010459
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DOI: https://doi.org/10.1007/BFb0010459
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