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Вид документа : Статья из журнала
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Заглавие : Спектр хромосомных аберраций в корневой меристеме E. Canadensis из районов реки Енисей с разными типами техногенного загрязнения
Коллективы : Институт биофизики Сибирского отделения Российской Академии наук (Красноярск)
Место публикации : Экологическая генетика/ М. Ю. Медведева, А. Я. Болсуновский. - Санкт-етербург: ООО "Эко-Вектор" , 2016. - Том XIV, № 2. - С. 57-66. - DOI 10.17816/ecogen14257-66
ISSN: 1811-0932
УДК : 539.1.047:576.356
Предметные рубрики: Хромосомные аберрации
Ключевые слова (''Своб.индексиров.''): генотоксичность--аномалии митоза--элодея канадская--мосты--агглютинация--фрагментация хромосом
Аннотация: Показано изменение спектра хромосомных аномалий в корневой меристеме Elodea canadensis Michx. (элодея канадская), произрастающей в районах с разными типами техногенного загрязнения (радиационного и химического) донных отложений реки Енисей. В пробах элодеи, собранной в зоне радиоактивного загрязнения реки сбросами Горно-химического комбината Росатома (г. Железногорск), преобладающим типом аномалий были хромосомные аберрации (мосты, агглютинация, фрагментация хромосом), а также множественные аномалии в одной клетке. В пробах элодеи из районов реки Енисей с нерадиоактивным (химическим) загрязнением донных отложений предприятиями г. Красноярска преобладали аномалии, связанные с нарушением митотического веретена деления клетки. The spectrum of cytogenetic abnormalities in the apical root meristem of Elodea сanadensis Michx. (elodea) from the Yenisei River was studied depending on the type of anthropogenic pollution. We compared elodea samples from areas with radiation-contaminated sediments (area affected by Rosatom Mining and Chemical Combine, MCC, Zheleznogorsk) and areas with chemical pollution (Krasnoyarsk). Materials and methods. The apical root meristem of elodea was fixed in acetic alcohol (96 % ethanol and glacial acetic acid, 3 : 1) and stained with 1 % aceto-orcein. The cytogenetic analysis of metaphase and ana-telophase elodea cells was carried out with temporal squashed preparations using an Olympus CX31 microscope. Results. At metaphase stage, the predominant types of abnormalities in elodea cells were disoriented chromosomes (up to 9 % of total metaphase cells) and chromosome agglutination (6 %). In the area affected by the MCC an increased content of ring chromosomes in elodea cells was detected, but in terms of frequency of their occurrence no significant differences were revealed between samples from areas with different types of pollution. Among abnormalities at ana-telophase stage, bridges (to 20% of dividing cells) and disoriented chromosomes (up to 8%) dominated. The following abnormalities were also detected: multipolar and asymmetrical mitoses, agglutination and cells with multiple chromosome abnormalities. It was shown that in areas with the highest content of 137Cs in bottom sediments the frequency of cells with bridges and multiple chromosome abnormalities significantly increased as compared to samples from other areas. Conclusion. In the radioactive contamination area of the Yenisei River the spectrum of abnormalities was dominated by chromosome aberrations (bridges, agglutination, chromosome fragmentation) and multiple abnormalities in one and the same cell. In areas with non-radioactive (chemical) contamination of sediments, mitotic spindle irregularities prevailed
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Вид документа : Статья из журнала
Шифр издания : 577.34 /С 57
Автор(ы) : Зотина, Татьяна Анатольевна, Трофимова, Елена Александровна, Дементьев, Дмитрий Владимирович, Карпов, Антон Дмитриевич, Паньков, Егор Викторович, Болсуновский, Александр Яковлевич
Заглавие : Содержание техногенных радионуклидов в промысловых рыбах р. Енисей в период работы реакторного производства на Горно-химическом комбинате и после его остановки : статья
Место публикации : Вопросы радиационной безопасности. - Озерск: Федеральное государственное унитарное предприятие Производственное объединение Маяк, 2016. - № 2. - С. 28-35. - ISSN 1816-9643
УДК : 577.34 + 574.524 + 597.5
Ключевые слова (''Своб.индексиров.''): хариус--елец--щука--thymallus arcticus--leuciscus leuciscus baicalensis--esox lucius--grayling--dace--pike
Аннотация: Река Енисей загрязнена техногенными радионуклидами в результате производства оружейного плутония на Горно-химическом комбинате (ГХК) в г. Железногорске (Россия) в течение более 50 лет. Последнее реакторное производство на ГХК было остановлено в 2010 г. В данной работе представлены данные по накоплению техногенных радионуклидов промысловыми рыбами (щукой, Esox lucius; хариусом, Thymallus arcticus, и ельцом, Leuciscus leuciscus baicalensis), обитающими на радиоактивно загрязненном участке р.Енисей в 2005-2014 гг. Из числа техногенных радионуклидов, которые регистрировались в мышцах рыб во время работы последнего ядерного реактора (32P, 60Co, 65Zn, 137Cs), только 137Cs регистрировался в течение четырех лет после остановки реакторного производства на ГХК. Содержание 137Cs в мышцах рыб было значительно ниже установленных в Российской Федерации санитарных норм. Содержание 137Cs в мышцах хищных рыб было выше, чем в мышцах мирных. Содержание 137Cs в ихтиофауне р. Енисей не снизилось после остановки последнего реакторного производства на ГХК, в то время как содержание радионуклидов с наведенной активностью снизилось значительно. Это можно объяснить неизменным потоком 137Cs в р. Енисей со сбросами радиохимического производства ГХК и депозитами 137Cs в донных отложениях. Можно ожидать, что концентрация 137Cs в мышцах рыб не снизится в ближайшие десятилетия. The Yenisei River is contaminated with artificial radionuclides due to the weapons-grade plutonium production at the Mining-and-Chemical Combine (MCC) at Zheleznogorsk (Russia) for more than 50 years. The last reactor plant at the MCC was shut down in 2010. The research presents the data on accumulation of artificial radionuclides in wild fish (pike, Esox lucius; grayling, Thymallus arcticus; and dace, Leuciscus leuciscus baicalensis) inhabiting the radioactively contaminated part of the Yenisei River between 2005 and 2014. Among artificial radionuclides that were detected in fish muscles when the last nuclear reactor plant was operating (32P, 60Co, 65Zn, 137Cs), only 137Cs was recorded four years after the shutdown of the nuclear power plant at the MCC. The concentrations of 137Cs in fish muscles were considerably below the sanitary norms for this radionuclide in the Russian Federation. Piscivorous fish species accumulated higher concentration of 137Cs in their muscles than non-predatory species. Concentration of 137Cs in fish fauna of the Yenisei River did not decrease after the shutdown of the last nuclear power plant at the MCC, while the concentration of radionuclides with induced activity decreased considerably. This can be explained by the constant inflow of 137Cs into the Yenisei River due to discharges from the radiochemical plant at the MCC and the deposits of 137Cs in the bottom sediments. We can expect that the concentration of 137Cs in fish muscles will not decrease in the next few decades.
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Вид документа : Статья из журнала
Шифр издания : 577.34/И 73
Автор(ы) : Болсуновский, Александр Яковлевич, Трофимова, Елена Александровна, Дементьев, Дмитрий Владимирович, Карпов, Антон Дмитриевич
Заглавие : Интенсивность накопления урана-238 представителями разных экологических уровней экосистемы р. Енисей
Коллективы : Институт биофизики Сибирского отделения Российской Академии наук (Красноярск)
Место публикации : Вестник Томского государственного университета. Биология. - Томск: Национальный исследовательский Томский государственный университет, 2016. - № 2 (34) . - С. 161-171. - DOI 10.17223/19988591/34/11
ISSN: 1998-8591
УДК : 577.34 + 597.5
Ключевые слова (''Своб.индексиров.''): коэффициент накопления--трофический уровень--philolimnogammarus viridis--fointinalis antipyretica--thymallus arcticus--esox lucius)
Аннотация: В результате многолетних исследований (2010-2013) получены данные по накоплению урана-238 в гидробионтах разных трофических уровней экосистемы р. Енисей. Пробы водного мха (Fointinalis antipyretica), зообентоса (Philolimnogammarus viridis и Ph. Cyaneus), сибирского хариуса (Thymallus arcticus) и щуки (Esox lucius) отбирали в районе ранее зарегистрированного повышенного содержания урана в воде р. Енисей (вблизи радиоактивных сбросов Горно-химического комбината Росатома). Показано, что уран способен эффективно накапливаться из воды в биомассе всех исследованных гидробионтов. Максимальные коэффициенты накопления (КН) урана получены для водного мха, что многократно превышает КН урана для зообентоса и мышечной ткани рыб. Средние значения КН урана для зообентоса статистически значимо превышают КН в мышцах рыб за весь период наблюдения. Не выявлено статистически значимых отличий в накоплении урана рыбами разного трофического уровня (хариус и щука)The aim of the research was a comparative evaluation of the intensity of uranium-238 accumulation in the biomass of aquatic organisms, occupying different trophic levels in the ecosystem of the Yenisei river. Previously, uranium-238 at concentrations higher than the background ones was detected in water and sediment samples of the Yenisei River collected close to the discharge site of one of the Rosatom facilities (the Mining-and-Chemical Combine). However, radioecological studies of the Yenisei River ecosystem have not focused on uranium isotopes in aquatic organisms so far. The toxic effects of uranium on living organisms are known to be based on its both radioactive and chemical properties. We conducted a study on accumulation of uranium-238 in aquatic organisms at different trophic levels in the Yenisei River ecosystem between 2010 and 2013. We collected samples of aquatic moss (Fointinalis antipyretica), zoobenthos (Philolimnogammarus viridis and Ph. cyaneus), arctic grayling (Thymallus arcticus), and pike (Esox lucius) from the Yenisei region at a distance of 85-90 km downstream of Krasnoyarsk (5-10 km downstream of the radioactive discharge of the Mining-and-Chemical Combine). Data on samples are shown in Table 1. We determined uranium concentration in the samples of aquatic organisms by neutron activation analysis, in water - by ICP-MS (Table 2). The study shows that uranium can be effectively concentrated from water and accumulate in the biomass of all aquatic organisms used in experiments. The highest uranium concentration factors (CFs) were obtained for aquatic moss, and they were several times higher than the uranium CFs for zoobenthos and fish muscles. Based on the uranium concentration from water, all aquatic organisms of the Yenisei River used in this study can be ranked as follows: aquatic moss gammarids grayling = pike. No statistically significant difference has been found between uranium accumulation by fish of different trophic levels (Arctic grayling and pike). The uranium CFs obtained in this study is comparable with the literature data on the CFs of artificial radionuclides for aquatic moss and fish of the Yenisei River
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovskaya O. P., Yolgina O. E., Morozova I. I.
Заглавие : Zooplankton of Lake Pyasino and the Rivers Flowing into It after the Diesel Spill in 2020
Колич.характеристики :11 с
Коллективы : Siberian Branch of the Russian Academy of SciencesRussian Academy of Sciences [223-EP-2020/07]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 14, Is. 4. - С. 380-390. - ISSN 1995-4255, DOI 10.1134/S199542552104003X. - ISSN 1995-4263(eISSN)
Примечания : Cited References:35. - This work was supported by economic agreement no. 223-EP-2020/07 with the Siberian Branch of the Russian Academy of Sciences.
Предметные рубрики: NONPREDATORY MORTALITY
OIL-SPILLS
RECORDS
BASIN
STATE
Аннотация: At the beginning of August, 2 months after 20 000 t of diesel fuel spilled into the Bezymyanny Stream (which took it out to the Daldykan and Ambarnaya rivers), the large Norilsk expedition of the Siberian Branch, Russian Academy of Sciences, sampled net zooplankton at 13 stations located in both sections of these rivers and Lake Pyasino with the Pyasina River outflowing from it. A comparative analysis of the species composition, abundance, biomass, and saprobity index of zooplankton at these stations has been carried out. The productions of rotifer and crustacean zooplankton and potential production of planktivorous fish in Lake Pyasino have been calculated. Based on the state of zooplankton, a gradual improvement in water quality has been observed from river areas exposed to the oil products to the northern part of the lake and the River Pyasina outflow. The low abundance and biomass of zooplankton in the lake (43 800 +/- 17 550 ind./m(3), 112.8 +/- 26.2 mg/m(3), on average) due to the dominance of rotifers (Ploesoma truncatum (Levander), Bipalpus hudsoni (Imhof), and Conochilus unicornis Rousselet) resulted in low values of zooplankton production and the potential production of planktivorous fish (0.85 kg/ha per season).
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shulepina S. P., Dubovskaya O. P., Glushchenko L. A.
Заглавие : Zoobenthos of Lake Pyasino and the Rivers Flowing into It after the Diesel Spill of 2020
Колич.характеристики :8 с
Коллективы : Siberian Branch, Russian Academy of SciencesRussian Academy of Sciences [223-EP-2020/07]
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 14, Is. 4. - С. 391-398. - ISSN 1995-4255, DOI 10.1134/S1995425521040077. - ISSN 1995-4263(eISSN)
Примечания : Cited References:32. - This work was supported by the Siberian Branch, Russian Academy of Sciences, contract no. 223-EP-2020/07.
Предметные рубрики: CRUDE-OIL SPILL
Аннотация: The species composition and quantitative characteristics of the zoobenthos in Lake Pyasino and rivers flowing into it after a diesel spill have been analyzed. The production of zoobenthos and potential production of benthivorous fish in Lake Pyasino have been calculated. A small number of zoobenthos species and low values of abundance and biomass are revealed. In the Bezymyanny Stream, the mouth of the Daldykan River, and the Ambarnaya River, oligochaetes Limnodrilus hoffmeisteri Claparede and Tubifex tubifex (O. F. Muller) dominate in the zoobenthos abundance and biomass. In Lake Pyasino and the Pyasina River outflow, larvae of caddis flies, chironomids, stoneflies, and amphipods prevail. In the area of the deepwater silted station of Lake Pyasino, oligochaetes L.hoffmeisteri develop, the proportion of which in the benthic fauna at this station (40 and 79% of the total biomass and abundance, respectively) is maximal. The amphipod Monoporeia affinis (Lindstrom) dominates in terms of biomass at this station. A decrease in the chironomid diversity, an increase in the proportion of polysaprobic oligochaetes, and lower values of the Shannon index in Lake Pyasino in 2020 when compared to 1992 are found. The low abundance (2181 +/- 2048 ind./m(2)) and biomass (2.01 +/- 1.85 g/m(2)) of zoobenthos in the lake results in low values of zoobenthos production and the potential production of benthivorous fish (3 kg/ha per season). Based on the state of zoobenthos, an improvement in water quality has been observed from river sections exposed to the oil spill to the lake and the source of the River Pyasina.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kalachova G.S., Gladyshev M.I., Sushchik N.N., Makhutova O.N.
Заглавие : Water moss as a food item of the zoobenthos in the Yenisei River
Место публикации : Central European Journal of Biology. - 2011. - Vol. 6, Is. 2. - С. 236-245. - ISSN 1895104X (ISSN) , DOI 10.2478/s11535-010-0115-0
Ключевые слова (''Своб.индексиров.''): acetylenic fatty acids--bryophytes--fontinalis--gammarids--stable isotope analysis--trichopterans--animalia--bryophyta--bryophytes--chironomidae--ephemeroptera--eulimnogammarus viridis--fontinalis--fontinalis antipyretica--gammaridae--invertebrata--trichoptera
Аннотация: Bryophytes are abundant in streams and are a habitat for many invertebrates, but their contribution to the diet of fluvial zoobenthos is still debated. To estimate the amount of bryophyte-derived organic matter assimilated by benthic invertebrates, we used a combination of fatty acid and stable isotope analyses during a four-year monthly study of a littoral site in the Yenisei River (Siberia, Russia). Acetylenic acids, which are highly specific biomarkers of the water moss Fontinalis antipyretica, were found in lipids of all dominant benthic animals: gammarids, ephemeropterans, chironomids and trichopterans. The dominant zoobenthic species, Eulimnogammarus viridis, had maximum levels of the biomarkers in its biomass during winter, and minimum levels in summer. The zoobenthos in the studied site regularly consume and assimilate bryophyte-derived organic matter as a minor supplemental food. This consumption increases in winter, when the main food source of the zoobenthos, epilithic biofilms, are probably scarce. В© 2010 Versita Warsaw and Springer-Verlag Wien.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T. A., Trofimova E. A., Medvedeva M. Y., Dementyev D. V., Bolsunovsky A. Y.
Заглавие : Use of the aquatic plant Elodea canadensis to assess toxicity and genotoxicity of Yenisei River sediments
Место публикации : Environ. Toxicol. Chem. - 2015. - Vol. 34, Is. 10. - С. 2310-2321. - ISSN 07307268 (ISSN) , DOI 10.1002/etc.3057
Ключевые слова (''Своб.индексиров.''): aquatic plants--biomarkers--genotoxicity--sediment quality--sediment toxicity--biomarkers--chromosomes--cytotoxicity--pollution--pollution control--radioactive waste disposal--radioactivity--river pollution--sediments--toxicity--aquatic plants--genotoxicities--laboratory bioassay--radioactive contamination--radioactive pollution--sediment quality--sediment toxicity--toxicity endpoints--rivers--article--bioassay--controlled study--cytotoxicity--elodea canadensis--environmental exposure--genotoxicity--indicator organism--lake sediment--mitosis index--nonhuman--plant growth--plant root--priority journal--radioactive pollution--river--root length--russian federation--sensitivity analysis--shoot--toxicity testing--elodea--elodea canadensis
Аннотация: The toxicity, cytotoxicity, and genotoxicity of bulk sediments from the Yenisei River (Siberia, Russia) were estimated in laboratory bioassays based on several endpoints in the aquatic plant Elodea canadensis. The bottom sediment samples were collected in the Yenisei River upstream and downstream of the sources of chemical and radioactive contamination. The testing revealed different sensitivities of Elodea endpoints to the quality of the bottom sediment: weight of shootslength of shootsmitotic indexlength of rootspercentage of abnormal cells. The response of the genotoxicity endpoint (percentage of cells with chromosome abnormalities in roots of Elodea) was the highest in sediments with chemical pollution, whereas the highest inhibition of toxicity endpoints (shoot and root length) occurred in sediments with the highest level of radioactive pollution. The extreme response of Elodea endpoints to the quality of certain sediment samples may be regarded as related to the possible presence of unknown toxicants. The results show that E. canadensis can be used as an indicator species in laboratory contact testing of bottom sediment. The responses of shoot and root length growth endpoints of Elodea can be recommended as basic sensitivity indicators of bottom sediment toxicity. Analysis of cells carrying abnormal chromosomes in the apical root meristem of Elodea can be performed optionally in the same test to assess the genotoxicity of sediments. © 2015 SETAC.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky, Alexander, Melgunov, Mikhail, Chuguevskii, Alexey, Lind, Ole Christian, Salbu, Brit
Заглавие : Unique diversity of radioactive particles found in the Yenisei River floodplain
Колич.характеристики :10 с
Коллективы : Research Council of Norway through its Centres of Excellence funding scheme [223268/F50]; IAEA [17941]
Место публикации : Sci Rep: NATURE PUBLISHING GROUP, 2017. - Vol. 7. - Ст.11132. - ISSN 2045-2322, DOI 10.1038/s41598-017-11557-7
Примечания : Cited References:22. - The authors are grateful to researchers of the Institute of Biophysics FRC KSC SB RAS (Krasnoyarsk, Russia) and the Institute of Geology and Mineralogy SB RAS (Novosibirsk, Russia) for their assistance in isolation and analysis of radioactive particles. Part of the work is also supported by the Research Council of Norway through its Centres of Excellence funding scheme, project number 223268/F50. Investigations of the particles were partially supported by IAEA (Project 17941).
Предметные рубрики: CONTAINING CONTROL RODS
TRANSURANIC ELEMENTS
BOTTOM SEDIMENTS
HOT
Аннотация: The long-term operation of three reactors and the radiochemical plant of the Mining-and-Chemical Combine (MCC), Russia's largest producer of weapons-grade plutonium, has resulted in radioactive contamination of the Yenisei River floodplain. From 1995 to 2016, we found more than 200 radioactive particles (RP) in the Yenisei floodplain, downstream of the MCC. Analytical characterization showed that most of the RP were fuel particles, which were carried into the river after incidents at the MCC reactors. Having compared the Cs-137/Cs-134 ratios in the particles, we determined three time intervals when the RP were formed. The plutonium isotope ratios (Pu-238/Pu-239,Pu-240) vary substantially between the particles and indicate several different source terms. In addition to fuel RP, we found particles that only contained activation products (Co-60 or europium isotopes). SEM and gamma-spectrometry showed that the cobalt particles could have originated from the corrosion of the reactor coolant system and the europium particles -from the damaged compensating rods. No europium particles have been found anywhere else in the world. The presence of RP from different sources (fuel, cobalt, and europium particles) in the Yenisei River floodplain makes this region a unique site for studying environmental effects of the particles. These RP represent point sources of radioecological significance.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Medvedeva M. Y., Bolsunovsky A. Y.
Заглавие : Types of Cytogenetic Abnormalities in the Apical Root Meristem of Elodea canadensis from the Yenisei River Areas with Different Types of Anthropogenic Pollution
Место публикации : Russ. J. Genet. Appl. Res.: Pleiades Publishing, 2018. - Vol. 8, Is. 2. - С. 115-123. - ISSN 20790597 (ISSN) , DOI 10.1134/S2079059718020089
Ключевые слова (''Своб.индексиров.''): anthropogenic contamination of bottom sediments--elodea canadensis--genotoxicity--mitotic abnormalities--yenisei river
Аннотация: The change in the spectrum of chromosomal abnormalities in the apical root meristem of Elodea canadensis Michx. (elodea) growing in areas with different types of anthropogenic (radioactive and chemical) pollution of the bottom sediments of the Yenisei River is shown. In the samples of elodea collected in the zone of radioactive contamination of the river by discharges of the Rosatom Mining and Chemical Combine (MCC, Zheleznogorsk), the predominant type of abnormalities consist of chromosomal aberrations (bridges, stickiness, chromosomal fragmentation), as well as multiple abnormalities in one cell. The elodea samples from the areas of the Yenisei River with nonradioactive (chemical) contamination of bottom sediments by the enterprises of the city of Krasnoyarsk are predominantly characterized by abnormalities associated with the disturbance of the mitotic spindle of cell division. © 2018, Pleiades Publishing, Ltd.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Sushchik N.N., Makhutova O.N., Kalachova G.S.
Заглавие : Trophic fractionation of isotope composition of polyunsaturated fatty acids in the trophic chain of a river ecosystem
Место публикации : Doklad. Biochem. Biophys. - 2014. - Vol. 454, Is. 1. - С. 4-5. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672914010025
Предметные рубрики: Biochemistry, general
Biophysics and Biological Physics
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A.Y., Bondareva L.G.
Заглавие : Tritium in surface waters of the Yenisei River basin
Место публикации : Journal of Environmental Radioactivity. - 2003. - Vol. 66, Is. 3. - С. 285-294. - ISSN 0265931X (ISSN) , DOI 10.1016/S0265-931X(02)00132-7
Ключевые слова (''Своб.индексиров.''): deep-well injection of radionuclides--nuclear reactor--surface and ground waters--tritium--yenisei river basin--cooling water--nuclear reactors--sediments--surface waters--river basins--tritium--carbon 14--surface water--tritium--groundwater--nuclear power plant--radioactive pollution--surface water--tritium--article--catchment--measurement--radioactive contamination--river--sediment--environmental monitoring--geologic sediments--mining--power plants--reference values--russia--tritium--water pollutants, radioactive--russian federation--tritium
Аннотация: This paper reports an investigation of the tritium content in the surface waters of the Yenisei River basin near the Mining and Chemical Combine (MCC). In 2001 the maximum tritium concentration in the Yenisei River did not exceed 4 В± 1 Bq l-1, which is consistent with the data of 1998-99. However, it has been found that there are surface waters containing enhanced tritium as compared with the background values for the Yenisei River. For instance, in the Ploskii Stream and the Shumikha River the maximum tritium concentrations amount to 168 and 81 Bq l-1, respectively. The source of tritium in these surface waters is the last operating reactor at the MCC, which still uses the Yenisei water as coolant. In water and sediment samples of the Bolshaya Tel River (a tributary of the Yenisei River) the tritium content turned out to be at least 10 times higher than the background values for the Yenisei River. The measurements conducted at the RPA RADON (Moscow) revealed not only tritium but also the artificial radionuclide 14C in the Bolshaya Tel samples. The data obtained suggest that the Bolshaya Tel River receives the major part of tritium from sediments rather than from the water catchment area. This allows the conclusion that there is water exchange between the surface waters and the radioactively contaminated underground horizons of the "Severny" testing site. В© 2002 Elsevier Science Ltd. All rights reserved.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A.Y., Bondareva L.G.
Заглавие : Tritium in surface waters of the Yenisei River basin
Колич.характеристики :10 с
Место публикации : J. Environ. Radioact.: ELSEVIER SCI LTD, 2003. - Vol. 66, Is. 3. - P285-294. - ISSN 0265-931X, DOI 10.1016/S0265-931X(02)00132-7
Примечания : Cited References: 11
Ключевые слова (''Своб.индексиров.''): tritium--yenisei river basin--surface and ground waters--nuclear reactor--deep-well injection of radionuclides
Аннотация: This paper reports an investigation of the tritium content in the surface waters of the Yenisei River basin near the Mining and Chemical Combine (MCC). In 2001 the maximum tritium concentration in the Yenisei River did not exceed 4 +/- 1 Bq l(-1), which is consistent with the data of 1998-99. However, it has been found that there are surface waters containing enhanced tritium as compared with the background values for the Yenisei River. For instance, in the Ploskii Stream and the Shumikha River the maximum tritium concentrations amount to 168 and 81 Bq l(-1), respectively. The source of tritium in these surface waters is the last operating reactor at the MCC, which still uses the Yenisei water as coolant. In water and sediment samples of the Bolshaya Tel River (a tributary of the Yenisei River) the tritium content turned out to be at least 10 times higher than the background values for the Yenisei River. The measurements conducted at the RPA RADON (Moscow) revealed not only tritium but also the artificial radionuclide C-14 in the Bolshaya Tel samples. The data obtained suggest that the Bolshaya Tel River receives the major part of tritium from sediments rather than from the water catchment area. This allows the conclusion that there is water exchange between the surface waters and the radioactively contaminated underground horizons of the "Severny" testing site. (C) 2002 Elsevier Science Ltd. All rights reserved.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky, A. Ya., Dementyev D. V., Vakhrushev V. I.
Заглавие : Transport of Artificial Radionuclides over Long Distances Downstream along the Yenisei River during the 1966 Extreme Flood Event
Колич.характеристики :5 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-44-240001]
Место публикации : Dokl. Earth Sci.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 498, Is. 2. - С. 514-518. - ISSN 1028-334X, DOI 10.1134/S1028334X21060052. - ISSN 1531-8354(eISSN)
Примечания : Cited References:12. - This study was supported in part by the Russian Foundation for Basic Research, project no. 18-44-240001.
Предметные рубрики: SEDIMENTS
ELEMENTS
Аннотация: Long-term research has revealed layers with abnormally high concentrations of Cs-137 in bottom sediments and alluvial soils in the floodplain of the Yenisei River at various distances (as far as 820 km) downstream from the radioactive discharge point of the Mining-and-Chemical Combine (MCC) of Rosatom. The highest activity concentration of Cs-137 in these layers reached 26 000 Bq/kg, which was higher than the Cs-137 maximum at the well-known radioactive anomaly in the Yeniseisk riparian zone (330 km downstream from the MCC), which was formed during the 1966 extreme flood event. The radionuclide composition and the Cs-137/Eu-152 and Cs-137/Co-60 ratios in the anomalous layers studied were the same as those at the Yeniseisk anomalous site, suggesting that they had the same origin by the transport of sediments from the MCC area during the 1966 extreme flood event. The transport of radioactive bottom sediments over long distances from the MCC discharge point downstream along the Yenisei River during the 1966 extreme flood event may continue to pose a possible radiation hazard to the river ecosystem and residents of riverside villages.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T. A., Trofimova E. A., Dementyev D. V.
Заглавие : Time-dependent trends of artificial radionuclides in biota of the Yenisei River (Siberia, Russia)
Место публикации : J. Environ. Radioact.: Elsevier Ltd, 2019. - Vol. 208-209. - Ст.106028. - ISSN 0265931X (ISSN) , DOI 10.1016/j.jenvrad.2019.106028
Аннотация: We investigated time-dependent trends of artificial radionuclides in aquatic moss, zoobenthos (amphipods and caddisfly larvae), and three abundant wild fish species (Northern pike, Arctic grayling, and Siberian dace) inhabiting the Yenisei River in the vicinity of the radioactive discharge site in 2007–2015, in a period before and after the shutdown of the last nuclear reactor plant at the Mining-and-Chemical Combine (MCC), which occurred in 2010. From our research, we learned that concentrations of short-lived radionuclides, whose discharges to the Yenisei either stopped or declined after the shutdown of the reactor plant at the MCC (24Na, 46Sc,51Cr, 54Mn, 58Co, 59Fe, 60Co, 65Zn, 103Ru, 141,144Ce, 152,154Eu, 239Np), decreased in biota samples as well. The ecological half-life (EHL) of 65Zn (0.4–0.7 y) was similar to the physical half-life of this isotope, the EHLs of 60Co (1.2–2.1 y) and 152Eu (1.8 y) were shorter than the physical half-lives of these isotopes. Concentration of 137Cs did not decrease significantly in biota of the Yenisei after the shutdown of the last reactor plant because the discharges of this radionuclide to the Yenisei continued at the same level. On a longer-term scale (since 1973 and since 1991), concentration of 137Cs in fish muscle had significantly decreased, following the decrease in annual discharges of this radionuclide to the Yenisei, and the EHL of 137Cs was estimated as 6.5–12.8 y. Statistically significant correlation with annual discharges of 137Cs was revealed for the concentration of this radionuclide in grayling (whole bodies and muscle); dace (muscle), and amphipods. Despite their ability to accumulate high concentrations of 137Cs, aquatic moss and caddisfly larvae (analyzed together with their stony casings) were not sensitive to interannual fluctuations in the releases of this radionuclide to the Yenisei. Among the analyzed fish species of the Yenisei, the highest activity concentration of 137Cs was revealed in pike (body and muscle), indicating biomagnification of this radionuclide in the top level of the trophic chain. © 2019 Elsevier Ltd
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15.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Degermendzhy A.G., Kosolapova L.G., Vlasik P.V.
Заглавие : Theory, computational method and software for prognosis of migration and distribution of radioactive matters in river ecosystem
Место публикации : COMPUTATIONAL METHODS IN WATER RESOURCES XI, VOL 2: COMPUTATIONAL METHODS IN SURFACE FLOW AND TRANSPORT PROBLEMS: COMPUTATIONAL MECHANICS PUBLICATIONS LTD, 1996. - 11th International Conference on Computational Methods in Water Resources (CMWR 96) (JUL, 1996, CANCUN, MEXICO). - С. 277-284. - 8. - ISBN 1-85312-487-7
Примечания : Cited References: 0
Ключевые слова (''Своб.индексиров.''): mathematical modelling--migration of radionuclides--river ecosystem
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16.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Degermendzhy N.N., Kosolapova L.G.
Заглавие : Theory and software of ecological-economical optimization of river water use
Колич.характеристики :8 с
Место публикации : COMPUTATIONAL METHODS IN WATER RESOURCES XI, VOL 2: COMPUTATIONAL METHODS IN SURFACE FLOW AND TRANSPORT PROBLEMS: COMPUTATIONAL MECHANICS PUBLICATIONS LTD, 1996. - 11th International Conference on Computational Methods in Water Resources (CMWR 96) (JUL, 1996, CANCUN, MEXICO). - P453-460. - ISBN 1-85312-487-7
Примечания : Cited References: 0
Ключевые слова (''Своб.индексиров.''): mathematical model--preparation of water--self-purification--optimization
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : DEGERMENDZHI A.G., KOSOLAPOVA L.G.
Заглавие : THE THEORY OF EFFECT OF POLLUTANT AUTOSTABILIZATION AT RIVER ECOSYSTEM
Место публикации : Dokl. Akad. Nauk: MEZHDUNARODNAYA KNIGA, 1993. - Vol. 329, Is. 5. - С. 674-676. - 3. - ISSN 0869-5652
Примечания : Cited References: 9
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A. Y., Trofimova E. A., Zueva A. V., Dementiev D. V.
Заглавие : The first results of using the Allium test in estimating the chemical and radiation toxicity of bottom sediments in the Yenisei River
Место публикации : Dokl. Biol. Sci.: Maik Nauka Publishing / Springer SBM, 2016. - Vol. 469, Is. 1. - С. 192-195. - ISSN 00124966 (ISSN) , DOI 10.1134/S0012496616040128
Аннотация: The first results of the use of the Allium test for estimation of toxicity of bottom sediments in the Yenisei River and the effect of external ?-radiation under laboratory conditions are presented. The effect of stimulation of the onion root growth, i.e., the absence of toxicity was discovered in toxicological experiments using bottom sediments and under external ?-radiation. The stimulating effect of radiation on the growth of onion roots limits the use of the Allium test for testing samples from the Yenisei River ecosystem in the zone subjected to the impact of radioactive discharges from the Mining and Chemical Combine. © 2016, Pleiades Publishing, Ltd.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dubovskaya O. P., Glushchenko L. A.
Заглавие : THE FIRST RECORDS OF SENECELLA SIBERICA VYSHKVARTZEVA 1994 (COPEPODA, CALANOIDA) IN LARGE NORILSK LAKES, PYASINA RIVER BASIN, CENTRAL SIBERIA
Колич.характеристики :8 с
Место публикации : Zool. Zhurnal: MAIK NAUKA-INTERPERIODICA PUBL, 2018. - Vol. 97, Is. 10. - С. 1264-1271. - ISSN 0044-5134, DOI 10.1134/S0044513418100057
Примечания : Cited References:26
Предметные рубрики: LIMNOCALANUS-MACRURUS
FRESH-WATER
MICHIGAN
ESTUARY
Аннотация: The large, deep, freshwater Norilsk lakes (Lake Lama, Lake Sobachye, Lake Glubokoe and Lake Keta) are located beyond the Arctic Circle, at the northwestern edge of the Putorana Plateau. They underwent a Pleistocene boreal marine transgression. A relict of that transgression, Limnocalanus macrurus Sars 1863 (Copepoda, Calanoida), presently dominates the crustacean zooplankton of these lakes. Sympatric with the native relict species L. macrurus, Senecella siberica Vyshkvartzeva 1994, was found in our zooplankton samples taken from the deep parts of lakes Lama and Sobachye in the summer-autumn of 2014-2016. Sampling was performed using a Juday net hauled vertically from a depth of 15, 20(25/30) and/or 50 m to the surface. All Senecella specimens were older copepodites, mainly CIV stage in Lama and Sobachye lakes in August and CV in Sobachye Lake in September; their abundance was low (25-2000 ind. m(-2)). They inhabited the central deeper regions of the lakes, contributing up to 7-14% to the total wet biomass of net zooplankton in 0-20 and 0-50 m strata. Previous sporadic and rather superficial samplings in these lakes missed Senecella due to its deep locations, low abundance levels and the absence of both the oldest copepodites and adults in summer.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A., Muratova E., Sukovaty A., Kornilova M.
Заглавие : The effect of radionuclide and heavy metal contamination of the Yenisei River on cytogenetics of aquatic plant Elodea canadensis
Место публикации : Radioprotection. - 2009. - Vol. 44, Is. 5. - С. 83-88. - ISSN 00338451 (ISSN) , DOI 10.1051/radiopro/20095021
Аннотация: The study was done to determine concentrations of radionuclides and heavy metals and to evaluate the frequency of chromosomal aberrations in samples of Elodea canadensis, a submerged plant, collected in different parts of the Yenisei River. Samples were collected in the area subjected to radioactive impact of theMining-and-Chemical Combine (MCC) at Zheleznogorsk and in the control areas, upstream of the MCC. The investigations showed that Elodea biomass in the area affected by MCC operation contained a long inventory of artificial radionuclides typical of the MCC discharges. Upstream of the MCC, in the control sampling areas, the sediments and the Elodea biomass contained only one artificial radionuclide - 137Cs. Thus, the exposure doses to Elodea shoots and roots upstream of the MCC are small (not more than 8 ?Gy/d) and the main contribution to them is made by natural radionuclides. At the MCC discharge site (the village of Atamanovo) and downstream of it, the total dose rate increases almost an order of magnitude, reaching its maximal values - 72 ?Gy/d for Elodea shoots and 58 ? Gy/d for roots. Cytogenetic investigations of Elodea roots showed that at the MCC discharge site (the village of Atamanovo) and downstream of it the occurrence of chromosomal aberrations in ana-telophase and metaphase cells of Elodea was considerably higher than in the control area. It is highly probable that this simultaneous dramatic increase in the total exposure rate and the occurrence of chromosomal aberrations in Elodea is associated with the radiation factor. It is suggested that Elodea is affected not only by the radiation factor but also by the chemical factor - toxicity of heavy metals. В© 2009 EDP Sciences.
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