[Study of organo-mineral gels using viscosimetry and electron spin exchange]

Water systems with different content of soil organo-mineral complex (OMC) were studied by viscosimetry in a capillary and by the spin probe. The viscosimetric data suggest the existence of structural reconstructions in the range of 32 degrees C. The ESR data are analysed assuming simultaneous existence of two mechanisms of relaxation of spin exchange and dipole-dipole interaction. Localization of the hydrophile probe (tanole) in the aqueous region of the spectra was stated. The facts that the rotationary diffusion of the probe is independent of viscosity and that translation diffusion of the probe strongly depends on viscosity are in agreement with the assumption concerning the formation of trimeric net of couplings in the systems with OMC content above 4%.