Reproduction of sediment deposition and prediction …
The concentrations of 137 Cs adsorbed on fine sediment particles of each size fraction were determined. Removal of 137 Cs from the cardinal urban river channel had significant effects on both...
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FACT SHEET: EPA FACTS ABOUT CESIUM-137
environment and demonstrated that normal variations of soil concentrations (due to fallout deposition) of 137 Cs are likely to vary by orders of magnitude within a local residential area and peak concentrations
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Fact Sheet 0902
Cesium-137 presents both external and internal health hazards. Barium-137m, which is produced by Cesium-137 radioactive decay, emits strong gamma radiation. This strong gamma radiation makes external exposure a concern, and shielding is needed to handle materials containing large concentrations of Cs-137. While in the body, Cs-137 poses a ...
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Effects of species and geo-information on the 137Cs concentrations …
Since April 2012, the Japanese government set the criteria of radioactive cesium (sum of 134 Cs and 137 Cs) concentration in general foods as 100 Bq/kg to make annual internal exposure by food ...
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POTENTIAL FOR HUMAN EXPOSURE
The cesium concentration in fresh water systems of this region ranged from 0.58 to 3.69 µg/L (Fernandez-Turiel et al. 1995). The concentrations of 19 trace metals were studied in drinking water and groundwater supplies in southern Nigeria. ... The 137 Cs concentration incorporated into the Mediterranean Sea near the Spanish coast from the post ...
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Radioactivity in the Ocean: Diluted, But Far from Harmless
Concentrations of cesium-137 in seawater 10 to 30 kilometers off the Japanese coast from March 23 to March 30. ... such as iodine-131, and longer-lived elements — such as cesium-137, with a half-life of 30 years — can be absorbed by phytoplankton, zooplankton, kelp, and other marine life and then be transmitted up the …
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Road Dust as a Significant Radiocesium Transporter from …
Cesium-137 and Heavy Metal Distribution in Drainage Gutter Sediment Samples at Location 12. Concentrations of Cs-137 and heavy metals in road dust and drainage gutter sediments were significantly higher than those in riverbed sediments (Mann-Whitney U test, p < 0.05).Levels of Cs-137 in drainage gutter sediments and soils in the …
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Radiocesium concentrations in mushrooms collected in …
Following the Fukushima Daiichi Nuclear Power Plant accident in March 2011, radionuclides such as iodine-131, cesium-134 and cesium-137 were released into environment. In this study, we collected wild mushrooms from the Kawauchi Village of Fukushima Prefecture, located less than 30 km southwest of the Fukushima nuclear …
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Cesium-137 Half-Life Calculator
Yes, Cs-137 can be found in soil, primarily as a result of nuclear weapons testing and nuclear accidents. Is cesium-137 hard to detect? Cesium-137 can be detected using various methods, including radiation detectors and spectroscopy. It is relatively easier to detect due to its characteristic gamma radiation.
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Assessing the Topsoil Contamination of Cesium-137
Although more than 30 years have passed since the Chernobyl accident, artificial radionuclides are still present in the soil. Especially, 137Cs is harmful to human health and contamination due to 137Cs is high. The topsoil samples were collected from various locations in Konya, Turkey. 137Cs activity concentrations were measured using …
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Cesium | Public Health Statement | ATSDR
Cesium is a naturally occurring element found in rocks, soil, and dust at low concentrations. Granites contain an average cesium concentration of about 1 part of cesium in a million parts of granite (ppm) and sedimentary rocks contain about 4 ppm. Natural cesium is present in the environment in only one stable form (isotope), 133 Cs.
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Quantitative modeling of radioactive cesium concentrations …
The activity concentrations of radioactive cesium isotopes (134 Cs and 137 Cs) in wild boar and Asian black bears from the area affected by the Fukushima accident were studied by several authors ...
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Biological proliferation of cesium-137 through the detrital
The 137 Cs concentrations of each functional group are shown in Figure 3.The glm based on Akaike's Information Criterion (AIC) selected the model with the grouping of functional groups shown in ...
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Unexpected source of Fukushima-derived …
Cesium-137 is an abundant fission product of nuclear power generation and nuclear weapons testing, which when released to the environment persists for decades due to its long half-life (30.2 y). ...
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POTENTIAL FOR HUMAN EXPOSURE
Concentrations of 137 Cs around the perimeter of the site and background concentrations off the site were reported as 589 and 419 pCi/kg, respectively. The concentration of 137 Cs and 134 Cs in soils and sediments at 18 U.S. DOE facilities was reported to range from 20 to 4.69×10 7 pCi/kg ( DOE 1992 ).
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Removing cesium: Solutions to a chemically complex problem
Cesium-137 is mostly human-made. It is found in large quantities in nuclear waste because it's a byproduct of making plutonium, a necessary step in nuclear weapons production.
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Difference of ecological half-life and transfer coefficient in …
The cesium-134 and cesium-137 concentrations of algae at site B tended to decrease with the increase in stream velocity, but it was not significant (cesium-134: τ = − 0.11, z ...
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Reproduction of sediment deposition and prediction of 137 …
Concentrations of 137 Cs were analysed on both an SS ... Evans, D. W., Alberts, J. J. & Clark, R. A. III Reversible ion-exchange fixation of cesium-137 leading to mobilization from reservoir ...
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In situ measurement of cesium-137 …
Cesium-137, present in the fallout, has a half-life of approximately 30 y and is readily absorbed by food crops, thus representing a health hazard for island inhabitants. ... Count time per sample was set at 60 min. Minimum …
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Cesium-137 deposition and contamination of Japanese soils …
The largest concern on the cesium-137 (137 Cs) deposition and its soil contamination due to the emission from the Fukushima Daiichi Nuclear Power Plant (NPP) showed up after a massive quake on March 11, 2011.Cesium-137 (137 Cs) with a half-life of 30.1 y causes the largest concerns because of its deleterious effect on agriculture and …
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137 Cs in the meat of wild boars: a comparison of the …
The impact of Chernobyl on the 137 Cs activities found in wild boars in Europe, even in remote locations from the NPP, has been much greater than the impact of Fukushima on boars in Japan. Although there is great variability within the 137 Cs concentrations throughout the wild boar populations, some boars in southern Germany …
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Seasonal variation of Cesium-137 concentration in Asian …
137 Cs activity concentration in wild animals. In this study, we obtained 279 muscle samples from carcasses of Asian black bear and 1,033 muscle samples from carcasses of wild boar that were killed by hunters or in animal control culls kills in Fukushima Prefecture from May 2011 to March 2016.
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Cesium Data Sheet
Cesium-137 may be used in industrial gauges, in mining and geophysical instruments, and for sterilization of food, sewage, and surgical equipment. ... Lower concentrations occur in brines in Chile and China and in geothermal systems in Germany, India, and Tibet. China was thought to have cesium-rich deposits of
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Caesium-137
For cesium 137, the fetal-to-maternal plasma ratio is 0 to 130. ... In the chronic study, the highest equilibrium cesium-137 concentrations, 10% of the average daily intake per gram, occurred in the muscle. The authors concluded that the muscle should be considered the formal critical organ for cesium-137. View chapter Explore book.
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Radionuclide Basics: Cesium-137 | US EPA
Radionuclide Basics: Cesium-137. Cesium (chemical symbol Cs) is a soft, flexible, silvery-white metal that becomes liquid near room temperature, but easily bonds with chlorides to create a crystalline powder. The most common radioactive form of cesium is Cs-137. Cesium-137 is produced by nuclear. for use in medical devices and gauges.
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In situ measurement of cesium-137 contamination in …
Cesium-137, present in the fallout, has a half-life of approximately 30 y and is readily absorbed by food crops, thus representing a health hazard for island inhabitants. In situ measurements of cesium-137 content were …
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Radioactive cesium accumulation in freshwater fishes after …
In the Iwaki region, a significant negative correlation was found for the total cesium concentration (r = -0.418, F = 32, and p < 0.05), while no significant correlations were found for the 134 Cs and 137 Cs concentrations (F = 3-5 and p > 0.1) due to the limited number of samples that were examined (Figure 3).
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Temporal variations of 90Sr and 137Cs in atmospheric
Activity of 90 Sr and 137 Cs in atmospheric depositions after the FDNPP accident from 2011 to 2018. (a) Cesium-137 in atmospheric depositions.(b) Strontium-90 in atmospheric depositions.The black ...
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Distribution of oceanic
The 137 Cs concentrations in near shore waters have remained approximately constant at 100 Bq L −1 since late April to the end of May 2011, which might be supported by continuous leak of smaller amount of radioactive waste water. Download : Download full-size image; Fig. 2. 137 Cs concentration at the 5–6 and south discharge …
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Bomb 137 Cs in modern honey reveals a regional soil control on
The highest honey 137 Cs concentration that we measured from Florida in 2018 exceeded ... J. C. & McHenry, J. R. Application of radioactive fallout cesium-137 for measuring soil-erosion and ...
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