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полный	информационный	краткий

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New process for transuranide preconcentration in water samples from the Yenisei River [Text] / L. G. Bondareva [et al.] // Dokl. Chem. - 2008. - Vol. 423. - P311-313, DOI 10.1134/S001250080812001X. - Cited References: 14 . - 3. - ISSN 0012-5008

РУБ Chemistry, Multidisciplinary
Рубрики:
ACTINIDES
ISOTOPES

Держатели документа:
[Bondareva, L. G.
Bolsunovskii, A. Ya.
Degermendzhi, A. G.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
[Trapeznikov, A. V.] Russian Acad Sci, Ural Div, Inst Plant & Anim Ecol, Ekaterinburg 690144, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bondareva, L.G.; Bolsunovskii, A.Y.; Trapeznikov, A.V.; Degermendzhi, A.G.

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Accumulation of Am-241 by suspended matter, diatoms and aquatic weeds of the Yenisei River [Text] / T. A. Zotina, A. Y. Bolsunovsky, L. G. Bondareva // J. Environ. Radioact. - 2010. - Vol. 101, Is. 2. - P148-152, DOI 10.1016/j.jenvrad.2009.09.009. - Cited References: 26 . - 5. - ISSN 0265-931X

РУБ Environmental Sciences
Рубрики:
RADIONUCLIDES
   PLUTONIUM
   ELEMENTS
   ACTINIDES
   PLANTS
Кл.слова (ненормированные):
Activity concentration -- Americium -- Aquatic plant -- Asterionella formosa -- Concentration factor -- Diatoma vulgare -- Diatoms -- Elodea canadensis -- Seston
Аннотация: In this work we experimentally estimated the capacities of the key components of the Yenisei River (Russia): particulate suspended matter (seston), diatom microalgae, and submerged macrophytes for accumulating Am-241 from water. In our experiments large particles of seston (>8 mu m), comparable in size with diatoms, took up most of americium from water. The accumulation of americium by isolated diatom algae (Asterionella formosa and Diatoma vulgare) was lower than by total seston. The concentration factors (CFs) of Am-241 for seston of the Yenisei River in our experiments were (2.8-6.9).10(5); for diatoms -(1.5-4.2)-10(4). The Us for aquatic plant Elodea canadensis were within the same order of magnitude as those for diatoms. Activity concentration and CFs of Am-241 were nearly the same in experiments under dark and light conditions. This is indicative of an energy independent mechanism of americium uptake from the water by diatoms and submerged macrophytes. (C) 2009 Elsevier Ltd. All rights reserved.

Держатели документа:
[Zotina, T. A.
Bolsunovsky, A. Ya.
Bondareva, L. G.] Inst Biophys SB RAS, Krasnoyarsk 660036, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zotina, T.A.; Bolsunovsky, A.Y.; Bondareva, L.G.

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Study of Hydration and Hydrolysis of Pu(IV) by the Density Functional Method / M. K. Ganusova [et al.] // Chem. Sustain. Dev. - 2017. - Vol. 25, Is. 3. - P239-246. - Cited References:36 . - ISSN 0869-8538

РУБ Chemistry, Multidisciplinary
Рубрики:
FREE-ENERGIES
   APPROXIMATION
   PLUTONIUM(IV)
   CHEMISTRY
   ACTINIDES
Кл.слова (ненормированные):
density functional method -- plutonium (IV) complexes -- the polarizable -- continuum model -- hydrolysis constants -- hydration free energy model -- hydrolysis constants -- hydration free energy
Аннотация: The structure and the first step of hydrolysis of hydrated Pu(IV) ion in aqueous medium were studied using relativistic density functional theory and the polarizable continuum model (PCM). According to calculations, the Pu(IV) ion was mainly coordinated with eight water molecules. The calculated distance Pu-O of 238-241 pm was in good agreement with the experimental value ((239 +/- 2) pm). It was demonstrated that for the correct replication of constants log K-1(0) of the first hydrolysis step, it was important to use scaling multipliers adequate to the charge of the hydrated complex when constructing the density that included the solvated complex in PCM model. The calculated values of log K-1(0) of -1.1...-0.2 were close to the experimentally defined range (-0.6-0.6). The correct replication of hydrolysis constants allowed considering the calculated range of the hydratation free energies of the Pu(IV) ion of 6070-6157 kJ/mol as a reasonable prediction of experimental values.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia.
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk, Russia.

Доп.точки доступа:
Ganusova, M. K.; Ivanova-Shor, E. A.; Shor, A. M.; Nasluzov, V. A.; Rubaylo, A. I.

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