Radiation of Aqueous Solutions of Non-Electrolytes in the Millimeter Range of the Spectrum and Their Dielectric Properties
| Autor: | V. S. Dunyashev, A. K. Lyashchenko, A. Yu. Efimov |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Formamide
Brightness Aqueous solution Materials science Radiometer Analytical chemistry 02 engineering and technology Dielectric Radiation 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Dimethylacetamide 0104 chemical sciences chemistry.chemical_compound chemistry Millimeter Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Russian Journal of Physical Chemistry A. 95:713-716 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024421040154 |
| Popis: | A highly sensitive radiometer is used at a frequency of 61.2 GHz to study the brightness characteristics of aqueous solutions of non-electrolytes (formamide, dimethylformamide, acetamide, dimethylacetamide) in a wide range of concentrations at 298 K. They are compared to calculated data from dielectric spectra in the millimeter (mm) spectral region. Good agreement is shown between the experimental and calculated radio brightness parameters in the initial range of concentrations, where changes in water hydration in solutions predominate (except for dimethylacetamide). It is found that the characteristic radiation of solutions grows along with the concentration of the non-electrolyte. The effect the number of CH3-groups in molecules has on the radio brightness characteristics is non-additive, due to the different effects of polar and non-polar groups of molecules. The total effect can be established using measurements of the intrinsic radiation of solutions in the millimeter region of the spectrum. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink