Base de dados : MEDLINE
Pesquisa : E07.710.600.500 [Categoria DeCS]
Referências encontradas : 930 [refinar]
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[PMID]:29407640
[Au] Autor:Jeskovský M; Listjak M; Sýkora I; Slávik O; Povinec PP
[Ad] Endereço:Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia. Electronic address: jeskovsky@fmph.uniba.sk.
[Ti] Título:Anthropogenic Cs on atmospheric aerosols in Bratislava and around nuclear power plants in Slovakia.
[So] Source:J Environ Radioact;184-185:77-82, 2018 Apr.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Nuclear power plants (NPPs) have been one of the sources of anthropogenic radionuclides in the environment. This work combines the results from monitoring stations around NPPs in Slovakia (Mochovce and Jaslovské Bohunice) and academic measurements at the Comenius University campus in Bratislava. Most of the atmospheric Cs in this region come from the resuspension of the Chernobyl-derived Cs, as well as caesium produced during nuclear weapons testing. By comparison of the obtained results at NPPs with Bratislava data, radiation impacts of the NPPs on the local environments have been estimated to be negligible.
[Mh] Termos MeSH primário: Poluentes Radioativos do Ar/análise
Radioisótopos de Césio/análise
Monitoramento de Radiação
[Mh] Termos MeSH secundário: Aerossóis/análise
Atmosfera/química
Centrais Nucleares
Eslováquia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Aerosols); 0 (Air Pollutants, Radioactive); 0 (Cesium Radioisotopes)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180207
[St] Status:MEDLINE


  2 / 930 MEDLINE  
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[PMID]:29334619
[Au] Autor:Zhang X; Efthimiou G; Wang Y; Huang M
[Ad] Endereço:Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, PR China; Institute for Nuclear and Energy Technologies, Karlsruhe Institute of Technology, Karlsruhe, D-76021, Germany. Electronic address: zhangxiaole10@outlook.com.
[Ti] Título:Comparisons between a new point kernel-based scheme and the infinite plane source assumption method for radiation calculation of deposited airborne radionuclides from nuclear power plants.
[So] Source:J Environ Radioact;184-185:32-45, 2018 Apr.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Radiation from the deposited radionuclides is indispensable information for environmental impact assessment of nuclear power plants and emergency management during nuclear accidents. Ground shine estimation is related to multiple physical processes, including atmospheric dispersion, deposition, soil and air radiation shielding. It still remains unclear that whether the normally adopted "infinite plane" source assumption for the ground shine calculation is accurate enough, especially for the area with highly heterogeneous deposition distribution near the release point. In this study, a new ground shine calculation scheme, which accounts for both the spatial deposition distribution and the properties of air and soil layers, is developed based on point kernel method. Two sets of "detector-centered" grids are proposed and optimized for both the deposition and radiation calculations to better simulate the results measured by the detectors, which will be beneficial for the applications such as source term estimation. The evaluation against the available data of Monte Carlo methods in the literature indicates that the errors of the new scheme are within 5% for the key radionuclides in nuclear accidents. The comparisons between the new scheme and "infinite plane" assumption indicate that the assumption is tenable (relative errors within 20%) for the area located 1 km away from the release source. Within 1 km range, the assumption mainly causes errors for wet deposition and the errors are independent of rain intensities. The results suggest that the new scheme should be adopted if the detectors are within 1 km from the source under the stable atmosphere (classes E and F), or the detectors are within 500 m under slightly unstable (class C) or neutral (class D) atmosphere. Otherwise, the infinite plane assumption is reasonable since the relative errors induced by this assumption are within 20%. The results here are only based on theoretical investigations. They should be further thoroughly evaluated with real measurements in the future.
[Mh] Termos MeSH primário: Poluentes Radioativos do Ar/análise
Contaminação Radioativa do Ar/estatística & dados numéricos
Centrais Nucleares
Monitoramento de Radiação/métodos
[Mh] Termos MeSH secundário: Atmosfera
Modelos Teóricos
Método de Monte Carlo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants, Radioactive)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180116
[St] Status:MEDLINE


  3 / 930 MEDLINE  
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[PMID]:29189819
[Au] Autor:Gies E
[Ad] Endereço:Erica Gies is a freelance science writer based in British Columbia, Canada, and San Francisco, California.
[Ti] Título:The real cost of energy.
[So] Source:Nature;551(7682), 2017 11 30.
[Is] ISSN:1476-4687
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Dióxido de Carbono/economia
Política Ambiental/economia
Política Ambiental/legislação & jurisprudência
Modelos Econômicos
Energia Renovável/economia
[Mh] Termos MeSH secundário: Dióxido de Carbono/análise
Carvão Mineral/efeitos adversos
Carvão Mineral/economia
Desenvolvimento Econômico
Eletricidade
Poluição Ambiental/efeitos adversos
Poluição Ambiental/economia
Poluição Ambiental/legislação & jurisprudência
Poluição Ambiental/prevenção & controle
Seres Humanos
Internacionalidade
Mineração
Centrais Nucleares
Energia Renovável/legislação & jurisprudência
Rios
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coal); 142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180216
[Lr] Data última revisão:
180216
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171201
[St] Status:MEDLINE
[do] DOI:10.1038/d41586-017-07510-3


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[PMID]:28749808
[Au] Autor:Ohba T; Hasegawa A; Kohayagawa Y; Kondo H; Suzuki G
[Ad] Endereço:*Department of Radiation Health Management, Fukushima Medical University, Fukushima, Japan; †ISGlobal (Institut de Salut Global de Barcelona), Barcelona, Spain; ‡Department of Radiation Disaster Mediceine, Fukushima Medical University, Fukushima, Japan; §National Hospital Organization Disaster Medical Center, Tokyo, Japan; **International University of Health and Welfare Clinic, Tochigi, Japan.
[Ti] Título:Body Surface Contamination Levels of Residents under Different Evacuation Scenarios after the Fukushima Daiichi Nuclear Power Plant Accident.
[So] Source:Health Phys;113(3):175-182, 2017 09.
[Is] ISSN:1538-5159
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Body surface contamination levels should be correlated with inhaled actual thyroid doses during evacuation following the Fukushima Daiichi nuclear power plant (FDNPP) accident. Evacuees and residents were screened for body surface contamination using a Geiger-Mueller survey meter. The authors obtained 7,539 individual screening data sheets as well as gamma-spectrometry data from measurements made on clothing of two subjects by using a germanium spectrometer. Body surface contamination levels were analyzed in four residential groups during two different periods: 12-14 and 15-17 March 2011. Contamination levels during 12-14 March in the Tomioka/Okuma/Futaba/Naraha group were very low, indicating that residents evacuated before the radioactive plume reached their towns on 12 March. In contrast, levels in the Namie and Minamisoma groups were higher than those in the other groups in both periods, indicating that these residents were exposed to plumes twice on 12 and 15-16 March. The plume on 12 March was enriched with short-lived radionuclides: averaged proportions of radioactivity (relative to I) from Te, I, and Cs measured in clothing from two subjects were 2.3, 1.1, and 0.1, respectively, after correction for physical decay by 12:00 on 12 March. These proportions are similar to those (relative to I) from Te and Cs in dust sampled by a high-volume air sampler in the zone 20 km from the FDNPP on 12 March: 1.9 and 0.1, respectively. These data indicate that the relative contribution to inhaled thyroid dose of short-lived radionuclides in radioactive plumes released on 12 March could be as much as 37.5% in 1-y-old children.
[Mh] Termos MeSH primário: Acidente Nuclear de Fukushima
Habitação
Centrais Nucleares
Monitoramento de Radiação/métodos
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Idoso de 80 Anos ou mais
Criança
Pré-Escolar
Feminino
Meia-Vida
Seres Humanos
Lactente
Recém-Nascido
Japão
Masculino
Meia-Idade
Radioisótopos/análise
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Radioisotopes)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170728
[St] Status:MEDLINE
[do] DOI:10.1097/HP.0000000000000690


  5 / 930 MEDLINE  
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[PMID]:29274797
[Au] Autor:Geng X; Xie Z; Zhang L; Xu M; Jia B
[Ad] Endereço:Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China, P.O.Box 9804, Beijing 100029, China; Institute of NBC Defence, Beijing, China, P.O.Box 1048, Beijing 102205, China. Electronic address: gengxiaobing@mail.iap.ac.cn.
[Ti] Título:An inverse method to estimate emission rates based on nonlinear least-squares-based ensemble four-dimensional variational data assimilation with local air concentration measurements.
[So] Source:J Environ Radioact;183:17-26, 2018 Mar.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:An inverse source estimation method is proposed to reconstruct emission rates using local air concentration sampling data. It involves the nonlinear least squares-based ensemble four-dimensional variational data assimilation (NLS-4DVar) algorithm and a transfer coefficient matrix (TCM) created using FLEXPART, a Lagrangian atmospheric dispersion model. The method was tested by twin experiments and experiments with actual Cs-137 concentrations measured around the Fukushima Daiichi Nuclear Power Plant (FDNPP). Emission rates can be reconstructed sequentially with the progression of a nuclear accident, which is important in the response to a nuclear emergency. With pseudo observations generated continuously, most of the emission rates were estimated accurately, except under conditions when the wind blew off land toward the sea and at extremely slow wind speeds near the FDNPP. Because of the long duration of accidents and variability in meteorological fields, monitoring networks composed of land stations only in a local area are unable to provide enough information to support an emergency response. The errors in the estimation compared to the real observations from the FDNPP nuclear accident stemmed from a shortage of observations, lack of data control, and an inadequate atmospheric dispersion model without improvement and appropriate meteorological data. The proposed method should be developed further to meet the requirements of a nuclear emergency response.
[Mh] Termos MeSH primário: Modelos Químicos
Monitoramento de Radiação/métodos
[Mh] Termos MeSH secundário: Poluentes Radioativos do Ar/análise
Algoritmos
Radioisótopos de Césio/análise
Acidente Nuclear de Fukushima
Japão
Centrais Nucleares
Vento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants, Radioactive); 0 (Cesium Radioisotopes)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180130
[Lr] Data última revisão:
180130
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171225
[St] Status:MEDLINE


  6 / 930 MEDLINE  
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[PMID]:29248741
[Au] Autor:Takahashi J; Wakabayashi S; Tamura K; Onda Y
[Ad] Endereço:Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan. Electronic address: takahashi.junko.ka@u.tsukuba.ac.jp.
[Ti] Título:Downward migration of radiocesium in an abandoned paddy soil after the Fukushima Dai-ichi Nuclear Power Plant accident.
[So] Source:J Environ Radioact;182:157-164, 2018 Feb.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:After the Fukushima Dai-ichi Nuclear Power Plant accident on March 2011, continuous monitoring of the detailed vertical distribution of radiocesium in soil is required to evaluate the fate of radiocesium and establish strategies for remediation and management of the contaminated land. It is especially important to investigate paddy soil because little knowledge has been accumulated for paddy soil and wetland rice is a major staple in Japan. Therefore, we monitored the vertical distribution of Cs in abandoned paddy soil in a planned evacuation zone from June 2011 to March 2016. The decontamination works (i.e., 5 cm of surface soil removal and re-covering with uncontaminated soil) were conducted by the government in 2015. As a result of monitoring, the Cs gradually migrated downward with time and the Cs concentration in the 0-10 cm soil was almost homogenous in October 2014, although it was non-cultivated. The liner relationship was obtained between the median depth, which is the thickness of a soil layer containing half of the total Cs inventory, and the time after the accident, indicating the migration rate was constant (1.3 cm y ) before the decontamination works. After the decontamination works, the Cs concentration in the uppermost surface layer was reduced by 90%, however the total Cs inventory was reduced by only 50-70%. It was shown that the efficiency of Cs removal by the decontamination works decrease linearly over time in fields like the studied paddy, in which the homogenization of Cs concentration occurred. Conversely, the downward migration of Cs to subsurface layers deeper than 10 cm (i.e., plowpan layer) with low permeability rarely occurred. It is expected that these unique trends in distribution and migration of Cs would be found in abandoned paddy soils with properties similar to the studied soil, sandy loam but poorly drained because of the low permeable plowpan layer, although further validation is necessary.
[Mh] Termos MeSH primário: Radioisótopos de Césio/análise
Acidente Nuclear de Fukushima
Monitoramento de Radiação
Poluentes Radioativos do Solo/análise
Poluentes Radioativos da Água/análise
[Mh] Termos MeSH secundário: Agricultura
Japão
Centrais Nucleares
Oryza
Solo
Zonas Úmidas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cesium Radioisotopes); 0 (Soil); 0 (Soil Pollutants, Radioactive); 0 (Water Pollutants, Radioactive)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171228
[Lr] Data última revisão:
171228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171218
[St] Status:MEDLINE


  7 / 930 MEDLINE  
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[PMID]:29202373
[Au] Autor:Abraham J; Meusburger K; Waldis JK; Ketterer ME; Zehringer M
[Ad] Endereço:State-Laboratory Basel-City, Kannenfeldstrasse 2, CH-4056 Basel, Switzerland.
[Ti] Título:Fate of Cs, Sr and Pu in soil profiles at a water recharge site in Basel, Switzerland.
[So] Source:J Environ Radioact;182:85-94, 2018 Feb.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:An important process in the production of drinking water is the recharge of the withdrawn ground water with river water at protected recharge fields. While it is well known that undisturbed soils are efficiently filtering and adsorbing radionuclides, the goal of this study was to investigate their behaviour in an artificial recharge site that may receive rapid and additional input of radionuclides by river water (particularly when draining a catchment including nuclear power plants (NPP)). Soil profiles of recharge sites were drilled and analysed for radionuclides, specifically radiocesium ( Cs), radiostrontium ( Sr) and plutonium ( Pu). The distribution of the analysed radionuclides were compared with an uncultivated reference soil outside the recharge site. The main activity of Cs was located in the top soil (4.5-7.5 cm) and reached down to a depth of 84 cm and 48 cm for the recharge and the reference site, respectively. The found activities of Pu originate from the global fallout after 1950. Pu appeared to be strongly adsorbed onto soil particles. The shape of the depth profile was similar to Cs, but also similar between the recharge and the reference site. In contrast, Sr showed a uniform distribution over the entire depth of the recharge and reference profiles indicating that Sr already entered the gravel zone and the ground water. Elevated inventories of the radionuclides were observed for the recharge site. The soil of the recharge field exhibited a threefold higher activity of Cs compared to the reference soil. Also for Pu higher inventories where observed for the recharge sites (40%). Sr behaved differently, showing similar inventories between reference and recharge site. We estimate that 75-89% of the total inventory of Cs in the soil at the recharge site (7.000 Bq/m ) originated from the fallout of the Chernobyl accident and from emissions of Swiss NPPs. This estimate is based on the actual activity ratio of Cs/ Pu of 22 for global fallout. The investigations identified radiostrontium as potential threat to the ground water.
[Mh] Termos MeSH primário: Radioisótopos de Césio/análise
Plutônio/análise
Monitoramento de Radiação
Poluentes Radioativos do Solo/análise
Radioisótopos de Estrôncio/análise
[Mh] Termos MeSH secundário: Centrais Nucleares
Suíça
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cesium Radioisotopes); 0 (Soil Pollutants, Radioactive); 0 (Strontium Radioisotopes); 53023GN24M (Plutonium)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171228
[Lr] Data última revisão:
171228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171205
[St] Status:MEDLINE


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[PMID]:29176852
[Au] Autor:Xiao Q; Liu H; Feldman MW
[Ad] Endereço:Department of Management Engineering, Engineering University of CAPF, Xi'an, China.
[Ti] Título:How does trust affect acceptance of a nuclear power plant (NPP): A survey among people living with Qinshan NPP in China.
[So] Source:PLoS One;12(11):e0187941, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:It is difficult to know whether different dimensions of trust have different effects on local residents' acceptance of nuclear power plants (NPPs). In previous research such trust has been considered as a single dimensional concept. This paper divides trust into goodwill trust and competence trust, and we explore the ways in which trust affects acceptance of NPPs through structural equation modeling. A survey of 491 people was conducted in Haiyan County, China, where the Qinshan nuclear power plant is located. We find that goodwill trust is significantly correlated with competence trust, and each can indirectly promote residents' acceptance of NPPs but by different paths. Goodwill trust improves acceptance of NPPs by decreasing risk perception, while competence trust improves acceptance of NPPs by increasing benefit perception. However, the associations between goodwill trust and benefit perception, competence trust and risk perception, are not significant.
[Mh] Termos MeSH primário: Centrais Nucleares
Inquéritos e Questionários
Confiança
[Mh] Termos MeSH secundário: Adulto
China
Feminino
Seres Humanos
Masculino
Meia-Idade
Modelos Teóricos
Energia Nuclear
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171219
[Lr] Data última revisão:
171219
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0187941


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[PMID]:28942373
[Au] Autor:Gueibe C; Kalinowski MB; Baré J; Gheddou A; Krysta M; Kusmierczyk-Michulec J
[Ad] Endereço:SCK•CEN, Studie Centrum voor Kernenergie•Centre d'Etude de l'énergie Nucléaire, Mol, Belgium. Electronic address: christophe.gueibe@sckcen.be.
[Ti] Título:Setting the baseline for estimated background observations at IMS systems of four radioxenon isotopes in 2014.
[So] Source:J Environ Radioact;178-179:297-314, 2017 Nov.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Worldwide monitoring of radionuclides is an essential part of the verification system of the Comprehensive Nuclear-Test-Ban Treaty (CTBT) as it can provide a direct evidence of the nuclear nature of an explosion. In the case of underground nuclear testing, the radioactive noble gases, specifically radioxenon, have the highest probability to escape to the atmosphere. The detection capability of the CTBT noble gas network, which is being built, is weakened due to the presence of a worldwide civilian radioxenon background. Improving the understanding and knowledge of civilian radioxenon sources and their impact on the noble gas systems background is crucial to strengthen their verification capabilities. Two major civilian radioxenon sources have been identified in past research, namely: Medical Isotope Production Facilities (MIPFs) and Nuclear Power Plants (NPPs). In this study, a 2014 baseline radioxenon emission inventory is proposed for all four CTBT relevant radioxenon isotopes (Xe-131m, Xe-133m, Xe-133 and Xe-135) on the basis of a literature review for both the Medical Isotopes Productions Facilities and Nuclear Power Plants. This 2014 baseline radioxenon emission inventory relies on peer-reviewed information on the facility location and corresponding radioxenon emission. The baseline radioxenon emission inventory is used along with Atmospheric Transport Modelling (ATM) to estimate the radioxenon activity concentrations at the noble gas systems. The results reveal the complexity and the geographical dependence of the civilian radioxenon background. The estimations are compared to the observations for CTBT noble gas systems that were operational in 2014. It is demonstrated that the estimated Xe-133 activity concentrations are, for most systems, in the same order of magnitude than observed detections. Non-detections of Xe-131m, Xe-133m, Xe-133 and Xe-135 are, for most samples, well reproduced by the estimation. To our best knowledge, this study is the first attempt to propose, a baseline emission inventory for all four CTBT relevant radioxenon isotopes and compare the estimated Xe-131m, Xe-133m, Xe-133 and Xe-135 activity concentrations with all observations at CTBT noble gas systems during the full 2014 calendar year.
[Mh] Termos MeSH primário: Poluentes Radioativos do Ar/análise
Centrais Nucleares
Monitoramento de Radiação/métodos
Radioisótopos de Xenônio/análise
[Mh] Termos MeSH secundário: Atmosfera/química
Cooperação Internacional
Isótopos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants, Radioactive); 0 (Isotopes); 0 (Xenon Radioisotopes)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171110
[Lr] Data última revisão:
171110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170925
[St] Status:MEDLINE


  10 / 930 MEDLINE  
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[PMID]:28917181
[Au] Autor:Marciulioniene D; Luksiene B; Montvydiene D; Jefanova O; Mazeika J; Taraskevicius R; Stakeniene R; Petrosius R; Maceika E; Tarasiuk N; Zukauskaite Z; Kazakeviciute L; Volkova M
[Ad] Endereço:State Research Institute Nature Research Centre, Akademijos 2, Vilnius, LT 08412, Lithuania. Electronic address: danute.marciulioniene@gamtostyrimai.lt.
[Ti] Título:Cs and plutonium isotopes accumulation/retention in bottom sediments and soil in Lithuania: A case study of the activity concentration of anthropogenic radionuclides and their provenance before the start of operation of the Belarusian Nuclear Power Plant (NPP).
[So] Source:J Environ Radioact;178-179:253-264, 2017 Nov.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Knowledge of the background activity concentrations of anthropogenic radionuclides before the start of operations of the new nuclear facilities in Belarus is of great value worldwide. Inland water bodies in Lithuania (specifically the Neris River, the Nemunas River and the Curonian Lagoon) are near the site of the Belarusian NPP under construction and, for this reason, sediments and flooded soils from these sensitive areas were analysed for radiocesium and plutonium isotopes (macrophytes were analysed only for Cs) in 2011-2012. The Cs and Pu activity concentrations in bottom sediments from the Nemunas River, sampled in 1995-1996 and re-calculated to the year 2016, were compared with those of 2011-2012. The obtained activity of Cs in bottom sediments of the Nemunas River and Curonian Lagoon varied from 1 Bq/kg to 47.0 Bq/kg. The activity of Cs in the tested soils ranged from 5.3 B g/kg to 32.9 Bq/kg. The Pu activity in bottom sediments of the studied sampling sites varied between 0.016 and 0.34 Bq/kg and in flooded soils from 0.064 to 0.55 Bq/kg. The Pu activity values were very low or lower than the detection limit. The activity of Cs in macrophytes varied from values lower than the detection limit to 6 Bq/kg. A strong positive linear correlation for bottom sediments was calculated between: Pu and total organic carbon (TOC), r = 0.86, p-value 0.01; Pu and silt, r = 0.80, p-value 0.029; Cs and silt, r = 0.78, p-value 0.04; and Cs and TOC, r = 0.85, p-value 0.015. The similar peculiarities of Cs and Pu accumulation in bottom sediments and flooded soil allow us to assume that Cs can be used as a tracer for Pu in the initial stage of searching for radionuclide accumulation zones. A remaining impact of the Chernobyl fallout in average comprised: in the Lower Nemunas River and Curonian Lagoon sediments - 51%, in the Middle Nemunas River -90% and in the floodplains of the Nemunas River - 59%, while the provenance of plutonium in studied bottom sediments and flooded soil was the global fallout.
[Mh] Termos MeSH primário: Radioisótopos de Césio/análise
Poluentes Radioativos da Água/análise
[Mh] Termos MeSH secundário: Sedimentos Geológicos/química
Lituânia
Centrais Nucleares
Monitoramento de Radiação
Cinza Radioativa/análise
República da Bielorrússia
Rios
Poluentes Radioativos do Solo/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cesium Radioisotopes); 0 (Radioactive Fallout); 0 (Soil Pollutants, Radioactive); 0 (Water Pollutants, Radioactive)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171110
[Lr] Data última revisão:
171110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170917
[St] Status:MEDLINE



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