Description:    Correlation between the yield of free radicals in radiolysis of organic substances and the physicochemical characteristics of these substances can be quantitatively formulated in the form of multiparameter equations based on the linear free energy relationship. The major effect is exerted by the parameters of the capability of liquids for specific interactions. Content Type Journal Article Pages 509-510 DOI 10.1134/S1066362212050177 Authors R. G. Makitra, Department of Physical Chemistry of Fossil Fuels, Litvinenko Institute of Physical Organic and Coal Chemistry, National Academy of Sciences of Ukraine, ul. Nauchnaya 3a, Lviv, 79060 Ukraine G. G. Midyana, Department of Physical Chemistry of Fossil Fuels, Litvinenko Institute of Physical Organic and Coal Chemistry, National Academy of Sciences of Ukraine, ul. Nauchnaya 3a, Lviv, 79060 Ukraine E. Ya. Pal’chikova, Institute of Geology and Geochemistry of Fossil Fuels, National Academy of Sciences of Ukraine, Lviv, Ukraine Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5

Description:    The compounds KNaCaTh(Si 8 O 20 ) and Ca 2 Th(Si 8 O 20 ) were prepared for the first time by solidphase synthesis. The temperature dependences of the unit cell parameters were studied by high-temperature X-ray diffraction, and the thermal expansion coefficients of the compounds were determined. The IR bands of the compounds were assigned. The incongruent melting point of KNaCaTh(Si 8 O 20 ) was determined by differential scanning calorimetry. Content Type Journal Article Pages 431-434 DOI 10.1134/S1066362212050025 Authors A. V. Knyazev, Lobachevsky Nizhni Novgorod State University, pr. Gagarina 23, Nizhni Novgorod, 603950 Russia N. G. Chernorukov, Lobachevsky Nizhni Novgorod State University, pr. Gagarina 23, Nizhni Novgorod, 603950 Russia M. E. Komshina, Lobachevsky Nizhni Novgorod State University, pr. Gagarina 23, Nizhni Novgorod, 603950 Russia Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5

Description:    The performance of certain rocks (shungite, vermiculite, montmorillonite) in chemical water treatment is evaluated. Vermiculite packing ensures high efficiency of water decontamination from 137 Cs. Content Type Journal Article Pages 489-491 DOI 10.1134/S10663622120500128 Authors G. A. Skorobogatov, Chemical Faculty, St. Petersburg State University, Universitetskii pr. 26, St. Petersburg, 198504 Russia V. V. Eremin, Chemical Faculty, St. Petersburg State University, Universitetskii pr. 26, St. Petersburg, 198504 Russia Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5

Description:    Analysis of published data shows that H 2 O 2 arising in radiolysis of acidic aqueous solutions is in the excited state and reacts with Pu(VI) and Am(V) faster than in the case when in it is introduced into the system with actinide ions from the outside. Content Type Journal Article Pages 455-458 DOI 10.1134/S1066362212050062 Authors V. P. Shilov, Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, block 4, Moscow, 119071 Russia A. M. Fedoseev, Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, block 4, Moscow, 119071 Russia A. V. Gogolev, Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, block 4, Moscow, 119071 Russia Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5

Description:    The radiation hazard of the Klivazh object (Yunkom mine, Enakievo, Donetsk oblast, Ukraine) was evaluated, alternative ways of the mine decommissioning were considered, and the radiation hazard of the mine flooding was assessed. Specimens simulating the virtified glass-ceramic melt formed by the nuclear explosion were fabricated, and their chemical resistance (solubility) was examined by leaching of U, Cs, and Sr. The U, Cs, and Sr concentrations in water flowing over the explosion cavity were determined. When the tunnels of only two lower horizons (936 and 826 m) will be flooded, the radionuclide concentrations in the mine water will not exceed 10 −4 PC C ingest (PC C ingest is the permissible concentration in potable water for population, established in the Ukraine). Content Type Journal Article Pages 516-520 DOI 10.1134/S1066362212050190 Authors V. N. Bondarenko, Kharkov Physicotechnical Institute, National Scientific Center, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine A. V. Goncharov, Kharkov Physicotechnical Institute, National Scientific Center, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine Yu. A. Gordienko, Kharkov Physicotechnical Institute, National Scientific Center, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine A. V. Mazilov, Kharkov Physicotechnical Institute, National Scientific Center, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine B. N. Razsukovannyi, Kharkov Physicotechnical Institute, National Scientific Center, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine S. Yu. Saenko, Kharkov Physicotechnical Institute, National Scientific Center, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine V. I. Sukhostavets, Kharkov Physicotechnical Institute, National Scientific Center, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine A. G. Tolstolutskii, Kharkov Physicotechnical Institute, National Scientific Center, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine V. N. Tkachenko, Kharkov Physicotechnical Institute, National Scientific Center, ul. Akademicheskaya 1, Kharkov, 61108 Ukraine Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5

Description:    The possibility of preparing by self-propagating high-temperature synthesis (SHS) metal-ceramic (cermet) matrices with simulated wastes of REE-actinide fraction and Tc was examined. The specimens consist of oxide crystalline phases, glass, and melts. In the aluminate composite, the component (Sm) simulating the REE-actinide fraction is in the garnet and glass phases, and in the titanate composite, in the pyrochlore, titanosilicate of perrierite structure, and glass phases. Rhenium (Tc simulator) is incorporated in alloy phases. To evaluate the prospects for radioactive waste immobilization by SHS, it is necessary to synthesize matrices containing actinide isotopes (Am) and Tc and to study their structure and isolation properties. Content Type Journal Article Pages 511-515 DOI 10.1134/S1066362212050189 Authors N. P. Laverov, Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017 Russia S. V. Yudintsev, Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017 Russia E. E. Konovalov, Leipunskii Institute of Energy Physics, State Scientific Center of the Russian Federation, Federal State Unitary Enterprise, Obninsk, Kaluga oblast, Russia M. S. Nikol’skii, Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017 Russia T. O. Mishevets, Leipunskii Institute of Energy Physics, State Scientific Center of the Russian Federation, Federal State Unitary Enterprise, Obninsk, Kaluga oblast, Russia B. S. Nikonov, Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017 Russia B. I. Omel’yanenko, Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetnyi per. 35, Moscow, 119017 Russia Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5

Description:    Crystalline uranyl compounds with furan-2-carboxylic (F2C) and thiophene-2-carboxylic (T2C) acids containing the complex anions [UO 2 (OOCC 4 H 3 O) 3 ] − and [UO 2 (OOCC 4 H 3 S) 3 ] − were synthesized and studied by single crystal X-ray diffraction. A previously unknown compound of a transuranium element, Pu(VI), with T2C, also containing the complex anions [PuO 2 (OOCC 4 H 3 S) 3 ] − , was synthesized. With Pu(VI) taken as example, the complexation of hexavalent actinides with F2C and T2C in aqueous solutions was studied, and the stability of the complexes PuO 2 L + (L is F2C or T2C anion) was determined. The Pu(VI) complexes with F2C are slightly more stable than those with T2C but less stable than Pu(VI) monoacetate complexes. The spectral characteristics of the complexes are discussed. Content Type Journal Article Pages 435-442 DOI 10.1134/S1066362212050037 Authors A. M. Fedoseev, Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, block 4, Moscow, 119071 Russia M. S. Grigor’ev, Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, block 4, Moscow, 119071 Russia A. B. Yusov, Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, block 4, Moscow, 119071 Russia Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5

Description:    A procedure based on nuclear-chemical generation of free nucleogenic reactive species was developed for the synthesis of difluorobenzene double-labeled with tritium as a precursor for the generation of previously unknown difluorophenyl cations. Content Type Journal Article Pages 506-508 DOI 10.1134/S1066362212050165 Authors V. V. Avrorin, St. Petersburg State University, St. Petersburg, Russia N. E. Shchepina, Natural Science Institute, Perm State National Research University, ul. Genkelya 4, Perm, 614990 Russia Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5

Description:    1-Naphthylcarbamoylmethyliminodiacetic acid (NIDA) and diphenylmethylcarbamoylmethyliminodiacetic acid (DMIDA) were synthesized, characterized, and labeled with 99 m Tc using SnCl 2 as reducing agent. The parameters affecting the yield of 99 m Tc-NIDA and 99 m Tc-DMIDA were studied in detail. The optimum conditions ensuring high yield of 99 m Tc-NIDA (94.2 ± 2%) and 99 m Tc-DMIDA (93.1 ± 2%) are as follows: 30 mg of NIDA or DMIDA, 0.3 mg of SnCl 2 ·H 2 O, pH 6, 15 min. The biodistribution in mice injected with 99 m Tc-NIDA and 99 m Tc-DMIDA showed high liver uptake at 10 min post injection, with fast biliary excretion. Accumulation of the activity in kidneys was negligible, especially after a long time post injection. Both 99 m Tc-NIDA and 99 m Tc-DMIDA can be applied as hepatobiliary imaging agents for the evaluation of the functional status of the hepatocytes and the patency of the biliary duct. Content Type Journal Article Pages 501-505 DOI 10.1134/S1066362212050153 Authors M. A. Motaleb, Labeled Compounds Department, Hot Laboratories Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt H. El-Said, Radioactive Isotopes and Generator Department, Hot Laboratories Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt M. Abdallah, Faculty of Science, Zagazig University, Cairo, Egypt M. Atef, Radioactive Isotopes and Generator Department, Hot Laboratories Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5

Description:    Addition of small (1–5 vol %) amounts of ionic liquids (ILs) increases the Am(III) distribution ratio in the system with diphenyl(dibutylcarbamoylmethyl)phosphine oxide (Ph 2 Bu 2 ) by more than 2 orders of magnitude. With 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C 4 mim] + Tf 2 N − ) used as IL, the Am(III) extraction is possible even from 8 M HNO 3 , which is important in radiochemical analysis of process and environmental samples, because many procedures are based on the transfer of solid samples into 8 M HNO 3 . The extraction data show that the extractable Am(III) complex contains three Ph 2 Bu 2 ligands, an IL anion, and two NO 3 − anions. Content Type Journal Article Pages 473-476 DOI 10.1134/S1066362212050098 Authors G. A. Pribylova, Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 119991 Russia I. V. Smirnov, Khlopin Radium Institute, Research and Production Association, Federal State Unitary Enterprise, St. Petersburg, Russia A. P. Novikov, Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 119991 Russia Journal Radiochemistry Online ISSN 1608-3288 Print ISSN 1066-3622 Journal Volume Volume 54 Journal Issue Volume 54, Number 5