要約

Each of the numerous dielectric methods has its own limitations on the use, namely, the aggregate state of substance, range of electromagnetic spectrum of used frequencies, values of dielectric permittivity and electromagnetic losses in the substance, etc. In particular, the possibilities of rapid methods by the high-loss liquid substance dielectrometry in the millimeter (mm) range of the electromagnetic spectrum are currently limited. New opportunities in this area are opened by advancing the capillary-waveguide method to shorter mm wavelengths and using a proposed vibrating string method. It is shown that by these methods it is possible to determine the real component of the permittivity in strongly absorbing liquids (weak water solutions). In the capillary-waveguide method the measured resonance signal amplitude is chosen as an identification parameter, and in the vibrating string method it is the wavelength in the test liquid (in this case the water samples are taken from the sources in the Kharkov region). A high value of the correlation between the identification parameters of these two methods is found. This confirms the effectiveness and the validity of rapid methods for identification of liquids with high electromagnetic losses over the mm wavelength range. It is shown that the methods proposed for rapid identification of weak water solutions, can be applied in the industry of pharmaceuticals, wine products, etc