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Actinides and other radionuclides in sediments and submerged plants of the Yenisei River / A. Bolsunovsky, L. Bondareva // Journal of Alloys and Compounds. - 2007. - Vol. 444-445, Is. SPEC. ISS. - P495-499, DOI 10.1016/j.jallcom.2007.01.146 . - ISSN 0925-8388
Кл.слова (ненормированные):
Accumulation -- Actinides in aquatic plants and sediments -- Radiochemical and ?-spectrometric investigations -- Sequential extraction technique -- Yenisei River -- Actinides -- Bioaccumulation -- Plants (botany) -- Radioisotopes -- Rivers -- Sampling -- Sediments -- Mining-and-Chemical combine (MCC) -- Radiochemical and spectrometric investigations -- Sediment samples -- Sequential extraction techniques -- Contamination
Аннотация: The source of radioactive contamination of the Yenisei River floodplain, including contamination with actinides, is the Mining-and-Chemical combine (MCC), which has for many years been producing weapons-grade plutonium. Actinides have been detected not only in the soil and sediment of the river but also in the biomass of aquatic plants. The aim of our investigation was to assess the levels of actinides and other radionuclides in sediments and aquatic plants both near the MCC and at a considerable distance from it, down the Yenisei River. Investigations of the Yenisei River sediment samples revealed high activity concentrations of actinides (Pu isotopes and 241Am), which were 100 times higher than their global fallout levels. Sequential extraction of radionuclides from samples of sediments collected near the MCC showed that the amounts of extracted 241Am were the largest (up to 98% of initial activity). It was found that aquatic plants of the Yenisei River collected both near the MCC discharge site and at a distance up to 200 km downstream contained several actinide isotopes. The aquatic moss, Fontinalis antipyretica, was found to contain higher levels of radionuclides than Potamogeton lucens. Leaves of P. lucens contained higher levels of radionuclides, including 239Np, than stems. Sequential extraction of radionuclides from samples of aquatic plants showed that 239Np levels in exchangeable and adsorption fractions of P. lucens biomass were higher than in the respective fractions of F. antipyretica biomass. В© 2007 Elsevier B.V. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, the Russian Academy of Sciences, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovsky, A.; Bondareva, L.

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First evidence for concentrations of transuranium curium in the Yenisei floodplain ecosystem / A. Ya. Bolsunovsky [et al.] // Doklady Earth Sciences. - 2006. - Vol. 409, Is. 5. - P810-813, DOI 10.1134/S1028334X06050308 . - ISSN 1028-334X
Кл.слова (ненормированные):
actinide -- background level -- floodplain -- fluvial deposit -- radionuclide migration -- river pollution -- soil pollution -- Eurasia -- Krasnoyarsk [Russian Federation] -- Russian Federation -- Yenisei River -- Zheleznogorsk

Scopus
Держатели документа:
RAS, Russian Federation
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
GUP MosNPO Radon, Sed'moi Rostovskii per. 2/14, Moscow, 119121, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovsky, A.Ya.; Ermakov, A.I.; Sobolev, A.I.; Degermendzhi, A.G.

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Bioaccumulation, inter-organ distribution, and retention of waterborne and dietary Am-241 in silver crucian carp [Text] / T. A. Zotina [et al.] // Toxicol Environ. Chem. - 2014. - Vol. 96, Is. 2. - P243-254, DOI 10.1080/02772248.2014.941368. - Cited References: 25 . - ISSN 0277-2248. - ISSN 1029-0486

РУБ Environmental Sciences + Toxicology
Рубрики:
YENISEI RIVER
   TELEOST FISH
   RADIONUCLIDES
   METALS
   AMERICIUM
   EXPOSURE
   ELEMENTS
   ASSIMILATION
   ELASMOBRANCH
   DEPURATION
Кл.слова (ненормированные):
Americium-241 -- assimilation -- Carassius auratus gibelio -- force-feeding
Аннотация: The bioaccumulation of actinide Am-241 from food and water in bodies of freshwater fish (Carassius auratus gibelio, silver crucian carp) has been investigated in laboratory experiments. Homogenized biomass of submerged macrophytes labeled with Am-241 was injected into the fish gullet. Internal organs and tissues of crucian carp could be ranked according to activity concentration of dietary Am-241 after depuration of the digestive tract as follows: liver > gonads > bones > muscles. Accumulation of waterborne Am-241 in internal organs and tissues of crucian carp mainly occurred via the digestive tract. While the concentration of Am-241 in liver of crucian carps decreased during depuration time, its concentration in bones increased indicating slower transfer of Am-241 to skeleton compared to muscles and liver. The retention of dietary Am-241 in the bodies of crucian carp reached 35%-46% of ingested Am-241: 20%-31% was retained in liver, 0.6%-0.8% in skeleton, and 1.4%-2.0% in muscles. The concentration factor of Am-241 from water was 0.4 for the whole body, 0.3 for liver, 0.01 for muscles, and 0.01 for skeleton. Trace amounts of Am-241 were recorded in viscera and muscles of a wild population of silver crucian carp inhabiting a radioactively contaminated part of the Yenisei River.

WOS,
Scopus
Держатели документа:
[Zotina, T. A.
Trofimova, E. A.
Dementyev, D. V.
Bolsunovsky, A. Y.] Inst Biophys SB RAS, Krasnoyarsk, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zotina, T.A.; Trofimova, E.A.; Dementyev, D.V.; Bolsunovsky, A.Y.

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