Abstract:
:Radiocesium ((134)Cs and (137)Cs) originating from the Fukushima Dai-ichi Nuclear Power Plant (1FNPP) has contaminated coastal waters and been subsequently transferred to the marine biota along the Pacific coastal region of eastern Japan. To clarify the mechanism of radiocesium biokinetics in olive flounder, a commercially valuable and piscivorous predator, the biokinetics of (137)Cs was simulated using a dynamic biological compartment model and then validated with the measured concentrations in available monitoring data. The (137)Cs concentrations in seawater of the Pacific coastal sites of eastern Japan, from Kesen-numa (170 km north from the 1FNPP) to Choshi (190 km south from the 1FNPP), were reconstructed by fitting the simulated levels to the observed concentrations. Simulated values were verified by measured radiocesium levels in sedentary organism such as macro-algae and mussels inhabiting each study site which had accumulated radiocesium in their ambient environment from the beginning of the accident. Using reconstructed (137)Cs concentrations in seawater, the (137)Cs levels in olive flounder and its main planktivorous prey fish, e.g. anchovy, sand lance, whitebait, etc., were simulated and compared with observed concentrations to clarify the biokinetics of radiocesium in these organisms. This assessment showed that the determining factor for the maximum radiocesium concentrations in fish in the plankton food chain is likely to be the initial radiocesium concentration which they were exposed to during the contamination stage. Furthermore, the simulated (137)Cs concentrations in gut contents of olive flounder were verified by measured (137)Cs concentrations in the stomach contents of this fish collected within 30 km from the 1FNPP. These results indicated that the decrease of (137)Cs levels in their prey organisms was the primary determining factor of radiocesium depuration, and the resultant ecological half-lives were 140-160 d in the olive flounder, by the simulation.
journal_name
J Environ Radioactjournal_title
Journal of environmental radioactivityauthors
Tateda Y,Tsumune D,Tsubono T,Aono T,Kanda J,Ishimaru Tdoi
10.1016/j.jenvrad.2015.05.025subject
Has Abstractpub_date
2015-09-01 00:00:00pages
130-41eissn
0265-931Xissn
1879-1700pii
S0265-931X(15)30009-6journal_volume
147pub_type
杂志文章abstract::Trends of air dose rate decrease after decontamination works and factors which affect them constitute essential information for radiation protection, such as prediction of external exposure to the public and implementation of measures to reduce such exposure. This study investigated the decrease of air dose rate (ambi...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2019.106013
更新日期:2019-11-01 00:00:00
abstract::We examined the dissolution of Pu, U, and Am in contaminated soil from the Nevada Test Site (NTS) due to indigenous microbial activity. Scanning transmission x-ray microscopy (STXM) analysis of the soil showed that Pu was present in its polymeric form and associated with Fe- and Mn- oxides and aluminosilicates. Uraniu...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2015.08.019
更新日期:2015-12-01 00:00:00
abstract::The interactions of soil disaggregation with radionuclide erosion were studied under controlled conditions in the laboratory on samples from a loamy silty-sandy soil. The fate of 134Cs and 85Sr was monitored on soil aggregates and on small plots, with time resolution ranging from minutes to hours after contamination. ...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2004.02.004
更新日期:2004-01-01 00:00:00
abstract::For nearly 20 years the Department of Health has conducted programs to assist in the measurement and reduction of indoor radon concentrations in 186 schools located primarily in Zone 1 areas of New York State. Although many schools had few or no rooms containing radon above 148 Bq/m(3), some rooms had >740 Bq/m(3) and...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2014.07.020
更新日期:2014-11-01 00:00:00
abstract::Using a sector-field ICP-MS the vertical distributions of the (99)Tc concentration and (99)Tc/(137)Cs activity ratio were measured in the coastal waters off Aomori Prefecture, Japan, where a spent-nuclear-fuel reprocessing plant has begun test operation. The (99)Tc concentrations in surface water ranged from 1.8 to 2....
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2011.04.008
更新日期:2011-08-01 00:00:00
abstract::Large amounts of solid wastes (tailings) resulting from the exploitation and treatment of uranium ore at the Urgeiriça mine (north of Portugal) have been accumulated in dams (tailing ponds). To reduce the dispersion of natural radionuclides into the environment, some dams were revegetated with eucalyptus (Eucalyptus g...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/s0265-931x(00)00173-9
更新日期:2001-01-01 00:00:00
abstract::The role of building materials as a source of gamma radiation has been recognized in the new EU Basic Safety Standards Directive which introduces an index I to screen building materials of radiological concern. This index was developed to account for average concrete values of thickness and density, the main structura...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2015.02.011
更新日期:2015-05-01 00:00:00
abstract::Natural radioactivity was measured in groundwater samples collected from 37 wells scattered in an inhabited area of high natural background radiation, in a purpose of radiation protection. The study area is adjacent to Aja heights of granitic composition in Hail province, Saudi Arabia. Initial screening for gross α an...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2014.07.013
更新日期:2014-11-01 00:00:00
abstract::Ramsar, a northern coastal city of Iran, overlooking the Caspian Sea, has some high level natural radiation areas (HLNRAs) as well as over 50 hot springs with low and high radium contents used as spas by the public and vacationers. The average whole body dose received by population in these areas is about 5 times high...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2003.12.001
更新日期:2004-01-01 00:00:00
abstract::Earthworms are the most suitable biological indicators of radioactive pollution because they are the parts of nutritional webs, and are present in relatively high numbers. Four months old Eisenia fetida were exposed to different doses of gamma radiation, namely 1, 2, 3, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 & 60 G...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2014.10.010
更新日期:2015-02-01 00:00:00
abstract::Projectiles suspected to be composed of depleted uranium (DU) were found in Kosovo. Their properties were analysed using alpha and gamma ray spectrometry, mass spectrometry and electron microscopy. They were found to be composed of DU with small amounts of other elements such as Ti. 236U was detected in the penetrator...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/s0265-931x(02)00044-9
更新日期:2003-01-01 00:00:00
abstract::In this study the commonly used f-value for the 1001.03 keV (0.835 ± 0.004%) energy transition of the 234mPa was re-evaluated due to an obvious consistent overestimation of the 238U activity concentration. Different calibration protocols, samples' matrices and geometries, and gamma-ray spectrometers were exploited in ...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2017.01.018
更新日期:2017-04-01 00:00:00
abstract::The Sidi Moussa lagoon, located in western coastal Morocco and ranked as a wetland of biological and ecological importance (Ramsar site), is contaminated due to its proximity to the industrial phosphate plants and other anthropogenic activities around it. This study was carried out to assess the current environmental ...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2020.106464
更新日期:2021-02-01 00:00:00
abstract::In July 2015, the currently only active monitoring station for atmospheric 85Kr measurements in the southern hemisphere went operational at the Commonwealth Scientific and Industrial Research Organization (CSIRO) in Adelaide, Australia. Here, this new data is presented and combined with measurements from historic moni...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2020.106451
更新日期:2020-12-01 00:00:00
abstract::The development of instruments to measure gamma radiation in the marine environment, particularly on the sea floor, and the range of uses to which they have been put is reviewed. Since the first steps in the late 1950s, systems have been developed in at least 10 countries with the main thrust occurring in the 1970s. D...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章,评审
doi:10.1016/s0265-931x(00)00139-9
更新日期:2001-01-01 00:00:00
abstract::The transfer of 90Sr to rice plants following its acute ground deposition was examined experimentally in a greenhouse. Lysimeters were flooded after being filled with the soil monoliths from 12 paddy fields. A solution of 90Sr was applied to the standing water in the flooded lysimeters at the pre-transplanting stage o...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2006.12.008
更新日期:2007-01-01 00:00:00
abstract::Aerial gamma-ray surveying uses NaI(Tl) detectors mounted in small aircraft to measure gamma radiation, emitted from the earth's surface. The data are collected as gamma-ray spectra, typically with 1 s counting times, from which are derived K, U and Th concentrations in the ground. Applications of aerial surveying inc...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2004.03.028
更新日期:2004-01-01 00:00:00
abstract::A required parameter for the ERICA Tool is the concentration ratio (CR), which is used to describe the transfer from environmental media to a range of organisms. For the original parameterisation of the ERICA Tool, 60% of these values were derived using a variety of extrapolation approaches, including the application ...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2012.05.005
更新日期:2013-12-01 00:00:00
abstract::Dose assessments typically consider environmental systems as static through time, but environmental disturbances such as drought and fire are normal, albeit infrequent, events that can impact dose-influential attributes of many environmental systems. These phenomena occur over time frames of decades or longer, and are...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2013.01.011
更新日期:2013-06-01 00:00:00
abstract::Modelling the radionuclide cycle in forests is important in case of contamination due to acute or chronic releases to the atmosphere and from underground waste repositories. This article describes the most important aspects to consider in forest model development. It intends to give an overview of the modelling approa...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章,评审
doi:10.1016/j.jenvrad.2017.09.003
更新日期:2017-11-01 00:00:00
abstract::At present there is a need for the development of new radioisotopes for soil erosion and sediment tracing especially as fallout 137Cs levels become depleted. Recent studies have shown that 239Pu can be a useful new soil erosion and sediment radioisotope tracer. 239Pu was released in the major atmospheric nuclear weapo...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2017.08.009
更新日期:2017-11-01 00:00:00
abstract::In order to understand the influence of the Fukushima Daiichi nuclear power plant accident on the ecosystem in hilly and mountainous areas of Fukushima Prefecture, chronological changes in the levels of radiocesium in arthropod species were investigated. From 2012 to 2014, arthropods from different trophic levels were...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2016.07.017
更新日期:2016-11-01 00:00:00
abstract::Thorium levels and their association with Fe, Sc, Ca, and Particulate Organic Carbon (POC) were researched in sediments of the Vigo Ria in order to assess the influence of radioactive gneisses from the neighbouring continental Galiñeiro Complex. Sediment of 50 surface samples and 1 core was analysed by ICP-MS and the ...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2008.06.008
更新日期:2008-10-01 00:00:00
abstract::Ammonia gas injection is a promising technique for the remediation of uranium within the vadose zone. It can be used to manipulate the pH of a system and cause co-precipitation processes that are expected to remove uranium from the aqueous phase and decrease leaching from the solid phase. The work presented in this pa...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2016.11.029
更新日期:2017-02-01 00:00:00
abstract::The uranium (U) and plutonium (Pu) content with depth in a sediment core collected in the continental shelf off the mouth of the Santiago River in the Mexican Pacific was studied to evaluate the contamination effects of the effluent of the Santiago-Lerma River as it moves into the sea. The large mass of terrestrial de...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2016.08.007
更新日期:2016-11-01 00:00:00
abstract::The importance of major stakeholders participating in the formulation of strategies for maintaining food safety and agricultural production following a nuclear accident has been successfully demonstrated by the UK 'Agriculture and Food Countermeasures Working Group' (AFCWG). The organisation, membership and terms of r...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2004.04.011
更新日期:2005-01-01 00:00:00
abstract::The ability to predict the consequences of an accidental release of radionuclides relies mainly on the level of understanding of the mechanisms involved in radionuclide interactions with different components of agricultural and natural ecosystems and their formalisation into predictive models. Numerous studies and dat...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章,评审
doi:10.1016/j.jenvrad.2007.10.011
更新日期:2008-05-01 00:00:00
abstract::Since the Fukushima accident in March 2011 the concentration of radioactive cesium in Japanese rockfish (Sebastes cheni) has been decreasing slower than other fish species. The aim of this study was therefore to investigate the possibility of slow elimination rate (i.e., relatively longer Tb) as one of the reasons for...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2015.08.003
更新日期:2015-12-01 00:00:00
abstract::Extensive environmental survey and measurements of gamma radioactivity in the soil samples collected from Segamat District were conducted. Two gamma detectors were used for the measurements of background radiation in the area and the results were used in the computation of the mean external radiation dose rate and mea...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2013.04.013
更新日期:2013-10-01 00:00:00
abstract::An intercomparison of atmospheric dispersion models has been carried out for a hypothetical accident occurring in a nuclear power plant in the center of Spain. The accident consisted of a steam generator tube rupture, and two radionuclides have been considered for the exercise: 137-Cs and 131-I. Meteorological conditi...
journal_title:Journal of environmental radioactivity
pub_type: 杂志文章
doi:10.1016/j.jenvrad.2016.05.027
更新日期:2016-10-01 00:00:00