[en] In the first part, the progress of research works including spent fuel reprocessing of nuclear power reactor, process chemistry of uranium, plutonium, actinides, lanthanoids and fission products and radiation chemistry including photochemistry is reviewed. in the second part, works of the author in radiation processes and photochemical processes in extraction systems used in spent fuel reprocessing of nuclear power reactor, (namely) in tri-n-butylphosphate, di-n-butylphosphate, tritolylphosphate, di-n-butyl-butylphosphonate bis(2-ethylhexyl)phosphoric acid, cobalt(III) dicarbollide, nitrobenzene, carbon tetrachloride, chlorobenzene and its one-phase and liquid-liquid two-phase systems with water or nitric acid solutions, and crown-ethers (12-crown-4, 15-crown-5, dicyclohexano-24-crown-8 and their analogues tetrahydrofuran and 1,4-dioxane) which were studied with GC-MS, GC-FTIR, HPLC, capillary isotachophoresis, UV-VIS and EPR spectroscopy, preparative or laser flash photolysis, steady state and pulse radiolysis and other methods are reviewed.(author) The 24 papers is presented in the appendix. 469 refs., 17 tabs. 2 figs

[en] A review of using of high energy chemistry techniques (radiation chemical, photochemical, plasmachemical, and sonochemical methods) for the protection of environment is given. 43 refs

[en] The quantum yield of nitrobenzene disappearance has been determined. The mechanism of the photosubstitution of nitro group by the photolysis of nitrobenzene-tetrachloromethane mixture is discussed. (author)

[en] The main products of the photolysis of nitrobenzene-tetrachloromethane mixtures are chlorobenzene and hexachloroethane. Trichloromethane, phosgene and tetrachloroehtylene were found in smaller quantities. The chlorobenzene is formed by photosubstitution of nitro group in nitrobenzene. (author)

[en] Short communication

[en] Radicals of crown ethers, 12-crown-4 (1), 15-crown-5 (2), dicyclohexano-24-crown-8 (3) generated by gamma-radiolysis and the model compounds, tetrahydrofuran (4) and 1,4-dioxane (5) were studied by the spin-trapping method using C-phenyl-N-methylnitrone as a spin-trapping agent giving rise to the sufficiently stable nitroxyl radicals. The spin adducts of radicals 2 and 3 are relatively stable up to the temperature 253 K and 453 K, respectively. (author) 14 refs.; 2 figs.; 1 tab

[en] EPR spectra of paramagnetic centers originating from x-ray irradiation of aluminium hydroxide at room temperature were measured. The EPR spectrum represents a superposition of EPR spectra of ionic centers O^-, holes of type Al₂O^- and trapped electrons. Radiation chemical yield of paramagnetic centers is given. The decay of paramagnetic centers in irradiated Al(OH)₃ was observed also at 293 K, its rate constant was k₂ (0.0980±0.0019) kg·mol^-1·min^-1 and their decay half-life is 9.43±0.18 days. (author) 39 refs.; 4 figs

[en] The influence of nitrobenzene and chlorobenzene on the total radiation yield of chloride ions in the γ-irradiation of water-carbon tetrachloride two-phase systems has been determined. Nitrobenzene at small concentrations shows a pronounced protective influence on the radiation destruction of carbon tetrachloride. Similar protective effect on the destruction of carbon tetrachloride is shown by chlorobenzene, too, but the decrease of radiation yields of chloride ions is smoother, which is explained by radiation decomposition of chlorobenzene itself. Protective effect of nitrobenzene and chlorobenzene on the radiation destruction of carbon tetrachloride is explained by transfer of energy from carbon tetrachloride molecules to the aromatic molecules. (author) 10 refs.; 2 figs.; 2 tabs

No abstract available

[en] It was found that the main ionogenic radiolytical degradation products of tributylphosphate were monobutylphosphate, dibutylphosphate, phosphoric acid, formic, acetic, propionic and butyric acids as the result of gamma-irradiation of two-phase water-di(2-ethylhexyl)-phosphoric acid system, the main radiolytic degradation products are 2-ethylhexyl phosphoric acid and phosphoric acid. All products were determined using isotachophoresis. According two-phase theory the total and partial radiation yields of products were calculated from the results. (author). 10 refs., 15 figs., 2 tabs