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Каталог книг и продолжающихся изданий библиотеки Института биофизики СО РАН (1)

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovskii A.Ya., Zotina T.A., Bondareva L.G., Degermendzhi A.G.
Заглавие : Assessment of the rate of accumulation of the transuranium element americium-241 by the aquatic plant Elodea canadensis
Место публикации : Doklady Biological Sciences. - 2004. - Vol. 399, Is. 1-6. - С. 467-469. - ISSN 00124966 (ISSN) , DOI 10.1007/s10630-005-0014-0
Ключевые слова (''Своб.индексиров.''): americium--radioisotope--water--article--biomass--drug effect--environmental monitoring--hydrocharitaceae--methodology--ph--plant--plant root--radiation exposure--radiochemistry--time--toxicity testing--water pollutant--americium--biomass--environmental monitoring--hydrocharitaceae--hydrogen-ion concentration--plant roots--plant shoots--plants--radiochemistry--radioisotopes--time factors--toxicity tests--water--water pollutants, radioactive--elodea canadensis
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A., Zotina T., Bondareva L.
Заглавие : Accumulation and release of 241Am by a macrophyte of the Yenisei River (Elodea canadensis)
Место публикации : Journal of Environmental Radioactivity. - 2005. - Vol. 81, Is. 1. - С. 33-46. - ISSN 0265931X (ISSN) , DOI 10.1016/j.jenvrad.2004.10.012
Ключевые слова (''Своб.индексиров.''): 241am--accumulation--laboratory experiments--release--submerged plant elodea canadensis--yenisei river--activation analysis--biomass--concentration (process)--effluents--plutonium--rivers--aquatic plants--elodea plant--macrophytes--radioactive contamination--transuranium elements--americium 241--river water--americium--americium nitrate--bioaccumulation--biological uptake--macrophyte--pollutant source--radioactive pollution--river water--submerged vegetation--article--biomass--concentration (parameters)--environmental factor--fractionation--laboratory--macrophyte--radioactivity--river--sampling--adsorption--chemistry--hydrocharitaceae--methodology--physiology--plant--radiation exposure--radiation monitoring--russian federation--sediment--soil pollutant--time--tissue distribution--water pollutant--eastern hemisphere--eurasia--russian federation--world--yenisei river--elodea canadensis--adsorption--americium--biomass--chemical fractionation--geologic sediments--hydrocharitaceae--plant shoots--radiation monitoring--rivers--russia--soil pollutants, radioactive--time factors--tissue distribution--water pollutants, radioactive
Аннотация: The source of radioactive contamination of the Yenisei River floodplain, including contamination with transuranic elements, is the Mining-and-Chemical Combine of the Russian Ministry of Atomic Energy, which has for many years been producing weapons-grade plutonium. Transuranic elements have been detected not only in the soil and sediment of the river but also in the biomass of aquatic plants. This work is an investigation of accumulation and release of 241Am by a submerged macrophyte of the Yenisei River (Elodea canadensis) in laboratory experiments. In 2000-2003, laboratory experiments were carried out with biomass of E. canadensis Mich. and filtered river water. The samples were collected from the Yenisei River upstream of the discharge of the Combine's radioactive effluent. The experiments showed that 241Am is accumulated by Elodea biomass: the activity concentration of 241Am can reach 3280 В± 240 Bq/g, with the concentration factor for 241Am 16 600 В± 2200 l/kg. Results of chemical fractionation have proved that in the course of 241Am accumulation by Elodea biomass, 241Am tightly bound to biomass increases from 11% to 27% of the total 241Am in the biomass. Release of 241Am from the decaying Elodea biomass has been evaluated experimentally. By the end of the experiment (lasting up to 127 days), the Elodea plants had lost up to 65% of their initial 241Am activity and the rate of 241Am release into the water environment reached 23 Bq/day. В© 2004 Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T.A., Kalachova G.S., Bolsunovsky A.Ya., Degermendzhy A.G.
Заглавие : 241Am distribution in the biomass of freshwater macrophytes
Место публикации : Doklady Biological Sciences. - 2008. - Vol. 421, Is. 1. - С. 254-256. - ISSN 00124966 (ISSN) , DOI 10.1134/S0012496608040108
Ключевые слова (''Своб.индексиров.''): americium--carbohydrate--cellulose--lipid--nitrogen--polysaccharide--vegetable protein--article--biomass--bryopsida--cell membrane--cell wall--chemistry--cytoplasm--food chain--growth, development and aging--hydrocharitaceae--metabolism--americium--biomass--bryopsida--carbohydrates--cell membrane--cell wall--cellulose--cytoplasm--food chain--hydrocharitaceae--lipids--nitrogen--plant proteins--polysaccharides
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A., Bondareva L., Sukhorukov F., Melgunov M.
Заглавие : Accumulation of 242Pu by a macrophyte of the Yenisei River (Elodea canadensis) in laboratory experiments
Место публикации : Chemosphere. - 2009. - Vol. 75, Is. 3. - С. 284-288. - ISSN 00456535 (ISSN) , DOI 10.1016/j.chemosphere.2008.12.036
Ключевые слова (''Своб.индексиров.''): 242pu--accumulation--laboratory experiments--sequential extraction technique--submerged plant elodea canadensis--yenisei river--sup242/suppu--accumulation--laboratory experiments--sequential extraction technique--submerged plant elodea canadensis--yenisei river--biological materials--biomass--chemical plants--experiments--positive ions--rivers--plutonium--concentration (composition)--experimental study--laboratory method--macrophyte--plutonium isotope--river water--submerged vegetation--eurasia--russian federation--yenisei river--plutonium--article--biomass--chemistry--hydrocharitaceae--physiology--plant--radiation monitoring--river--time--water pollutant--biomass--hydrocharitaceae--plant shoots--plutonium--radiation monitoring--rivers--time factors--water pollutants, radioactive
Аннотация: The study addresses 242Pu accumulation by Elodea canadensis, one of the abundant species of submerged plants in the Yenisei River. 242Pu in water samples of the "Elodea - Yenisei River water" model system and in the biomass fractions was determined ?-spectrometrically, following radiochemical recovery of 242Pu using 236Pu - a chemical yield tracer. The experiments on accumulation of 242Pu by Elodea biomass showed that the activity concentration of 242Pu can reach 21 В± 2 Bq/g dry wt, with the concentration factor for 242Pu 13100 В± 2100 L/kg dry wt. Results of chemical fractionation proved that during the first few hours of the experiment 242Pu contained in Elodea was mainly concentrated in the exchangeable and the adsorbed fractions of biomass (about 100%). As Elodea biomass accumulated 242Pu, the absolute amount of 242Pu in the exchangeable and the adsorbed fractions remained almost unchanged, although the portion of 242Pu tightly bound to biomass increased. At the end of the experiment, on day 7, 242Pu tightly bound to biomass (fractions of organics and mineral residue) constituted 43-63% (in different experiments) of the total 242Pu in the biomass. В© 2008 Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bondareva L., Vlasova I., Mogilnaya O., Bolsunovsky A., Kalmykov S.
Заглавие : Microdistribution of 241Am in structures of submerged macrophyte Elodea canadensis growing in the Yenisei River
Место публикации : Journal of Environmental Radioactivity. - 2010. - Vol. 101, Is. 1. - С. 16-21. - ISSN 0265931X (ISSN) , DOI 10.1016/j.jenvrad.2009.08.003
Ключевые слова (''Своб.индексиров.''): alpha-track analysis--americium--elodea canadensis--liquid-scintillation spectrometry--microdistribution--alpha-track analysis--elodea canadensis--microdistribution--scintillation spectrometry--track analysis--liquids--luminescence--radioisotopes--scintillation--spectrometry--spectroscopy--americium--americium 241--americium--americium--bioaccumulation--experimental study--leaf--macrophyte--mass spectrometry--morphology--radionuclide--spatial distribution--stem--submerged vegetation--tracking--aquatic flora--article--bioaccumulation--concentration (parameters)--elodea canadensis--environmental radioactivity--isotope analysis--isotope tracing--leaf lamina--leaf surface--macrophyte--nonhuman--plant cell--plant morphology--plant stem--radioisotope distribution--river--chemistry--hydrocharitaceae--metabolism--plant--plant leaf--radiation monitoring--river--water pollutant--eurasia--russian federation--yenisei river--elodea canadensis--americium--hydrocharitaceae--plant leaves--plant shoots--plant stems--radiation monitoring--rivers--water pollutants, radioactive
Аннотация: A submerged macrophyte of the Yenisei River, Elodea canadensis, was used to study the microdistribution of the artificial radionuclide 241Am among different components of the plant. The total amount of 241Am added to the experimental system was 1850 В± 31 Bq/L. The total amount of 241Am accumulated by the plants was 182 Bq per sample, or 758,333 В± 385 Bq/kg dry mass. It has been found that the major portion of 241Am accumulated by E. canadensis, up to 85%, was bound to solid components of the cells. It is observed that the microdistribution of 241Am within different components of the submerged plant E. canadensis was not uniform. 241Am distribution vary depending on the age of the leaf blades, the state of the cells and morphological features of the plant stem. В© 2009 Elsevier Ltd. All rights reserved.
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