Development and deployment of an underway radioactive cesium monitor
A custom radiation monitoring system was developed by Oregon State University at the request of the Woods Hole Oceanographic Institute to measure radioactive cesium contaminants in the ocean waters near Fukushima Dai-ichi Nuclear Power Plant. The system was to be used on board the R/V Ka'imikai-O-Ka …
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How Radioactive is Our Ocean?
A typical seawater sample will contain just a few Bq/m 3 of the cesium isotopes and much higher levels of naturally occurring radionuclides. By comparison, the limit for cesium in drinking water in the U.S. is 7,400 Bq/m 3. Latest cesium levels will be updated and reported on the website beginning January 14, 2014.
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Oceanic dispersion of Fukushima‐derived radioactive cesium…
The radioactive cesium movement related to mode water is important in terms of the circulation of cesium into the ocean interior. Some new technologies and techniques concerning emergency monitoring of radioactivity in the ocean environment are also reported, the effectiveness of which has been demonstrated by use in relation to the …
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Radioactivity in the Ocean: Diluted, But Far from …
A 1999 study found that seals and porpoises in the Irish Sea concentrated radioactive cesium by a factor of 300 relative to its concentration in seawater, and a factor of 3 to 4 compared to the fish …
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Radioactive Material Monitoring in the Water Environment
Radioactive cesium concentrations in river sediments were measured in FY2020 as in the previous year. A total of 1,464 samples, including 572 samples collected in Fukushima Prefecture and others collected in Iwate, Miyagi, Ibaraki, Tochigi, Gunma, Chiba and Saitama Prefectures and the Tokyo Metropolis, were surveyed. The survey results …
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(PDF) Distribution of Dose-Rates and Deposition of Radioactive Cesium …
PDF | On Jan 1, 2021, Tatsuo Torii and others published Distribution of Dose-Rates and Deposition of Radioactive Cesium by the Airborne Monitoring Surveys | Find, read and cite all the research ...
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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 …
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POTENTIAL FOR HUMAN EXPOSURE
Since the production and use of cesium compounds are limited, and since the natural concentration of cesium in the earth's crust is low, stable 133 Cs is not often monitored or detected in the environment. Of much greater …
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Monitoring dissolved radioactive cesium in Abukuma River …
By monitoring the river waters since September 2012, it was estimated that the levels of dissolved radioactive Cs were less than 0.128 Bq/L and those of total radioactive Cs were less than 0.274 Bq/L in the main stream and branches of Abukuma River in the low suspended solid condition.
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Current Measures on Radioactive Contamination in Japan: …
Currently there is no major concern about radioactive cesium concentrations in retail foodstuffs in Japan, and very low levels of contamination at the production and wholesale stage. However, because the residue limits and food safety policies were revised on an ad hoc, emergency basis after the nuclear accident, the …
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Control of Radioactive Cesium [MOE]
Chapter 7 Environmental Radiation Monitoring 7.6 Radiation Monitoring of Clean Water Control of Radioactive Cesium As of April 2011, radioactive cesium concentrations in raw water, water after sedimentation, biological activated carbon treated water, and rapid filtered water were measured at water purification plants in Fukushima …
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Temporal variation of dose rate distribution around the …
An unmanned helicopter monitoring system (UHMS) was developed to survey the environmental effect of radioactive cesium scattered as a result of the FDNPS accident. The UHMS was used to monitor the area surrounding …
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Radioactive Cesium (Fukushima Prefecture) [MOE]
The above map shows radioactive material concentration distribution in farmland soil based on the results of the measurement conducted at 307 locations in Fukushima Prefecture in FY2019 (values are converted into those as of November 2, 2019). In this farmland soil survey, soil to a depth of approx. 15 cm from the ground surface or a depth …
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Evaluation of radioactive cesium impact from
Evaluation of radioactive cesium impact from atmospheric deposition and direct release fluxes into the North Pacific from the Fukushima Daiichi nuclear power plant. ... 2015), and airborne monitoring has indicated that the total deposition of 137 Cs on the land surface of Japan was about 2.4 ...
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Monitoring of radioactive cesium in wild boars …
Monitoring of radioactive cesium in wild boars captured inside the difficult-to-return zone in Fukushima Prefecture over a 5-year period Sci Rep . 2022 Apr 19;12(1):5667. doi: 10.1038/s41598-022-08444-1.
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Aerial radiation monitoring around the Fukushima Dai …
Aerial radiation monitoring around the Fukushima Dai-ichi Nuclear Power Plant using an unmanned helicopter J Environ Radioact. 2015 Jan; 139:294-299 ... To provide further details regarding the distribution of air dose rate and the distribution of radioactive cesium ((134)Cs and (137)Cs) deposition on the ground within a radius of approximately ...
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Cesium Radioactivity in Marine and Freshwater …
This review describes cesium radioactivity in marine and freshwater products after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident and explains the relation of that radioactivity to the restoration of marine and freshwater fisheries in …
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Hideki Tsuji
Development of rapid monitoring for dissolved radioactive cesium with a cartridge type of Prussian blue-impregnated nonwoven fabric. T Yasutaka, H Tsuji, Y Kondo, Y Suzuki. Bunseki Kagaku (Japan Analyst) 62 (6), 499-506, 2013. 11: 2013: Radiocesium balance and its behavior in dam on Uda river and Ota river in Fukushima Prefecture.
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A Reliable Hybrid Adsorbent for Efficient Radioactive Cesium
Cesium (Cs) removal from nuclear liquid wastewater has become an emerging issue for safeguarding public health after the accident at the Fukushima Daiichi Nuclear Power Plant. A novel macrocyclic ...
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Radionuclide Basics: Cesium-137 | US EPA
Last updated on February 5, 2024. The most common radioactive form of cesium (chemical symbol Cs) is Cesium-137. Cesium-137 is produced by nuclear fission for use in medical devices and gauges and is one of the byproducts of nuclear fission in nuclear …
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Readings of the Monitoring of Radioactive Cesium in …
2. Samples wherein radioactive cesium was detected all contained suspended solids. As a result of the second measurement of those samples after filtering, radioactive cesium was not detected in any of them. 3. Concentration of radioactive cesium is the total of Cs-134 and Cs-137 concentrations. 4. Monitoring points were as …
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Radiocesium concentrations in wild boars captured within …
Monitoring of radioactive cesium in wild boars captured inside the difficult-to-return zone in Fukushima Prefecture over a 5-year period Article Open access 19 April 2022 Rie Saito, Reiko Kumada, …
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Direct comparison of bacterial communities in soils
We herein investigated bacterial communities in the radioactive cesium (Cs)-contaminated and non-contaminated soils by high-throughput sequencing. The uppermost and ectorhizosphere soil samples were collected from the base of mugwort grown in the same soil type with the same soil-use history in order to compare the …
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Determination, Separation and Application of 137Cs: A Review
With a chemical similarity to K +, extensive investigations revealed that cesium is prone to be transferred into the human body via the food chain and substitute for potassium during transport in the cell membrane []. 137 Cs has serious damaging effects on the human body due to the gamma radiation from its daughter 137m Ba. 137 Cs is …
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Radioactive material from Fukushima disaster turns up in …
October 2, 2017 at 3:30 pm. Six years after the Fukushima nuclear reactor disaster in Japan, radioactive material is leaching into the Pacific Ocean from an unexpected place. Some of the highest ...
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Radioactive Fallout From Nuclear Weapons Testing | US EPA
Background radiation is around us all the time, mostly from natural sources, like naturally occurring radon and uranium. For more information about the history of RadNet, please visit the Learn About RadNet webpage. Some of the fallout radionuclides the EPA's monitoring systems may detect include: Americium-241; Cesium-137; Iodine …
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Medical Therapy of Patients Contaminated with …
If radioactive cesium is a significant pollutant, Prussian blue is the approved antidote for internal detoxification. Upon risks of radioiodine exposure, prophylactic or immediate treatment with potassium iodide tablets is recommended.
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The aerial radiation monitoring in Japan after the …
The ambient dose-rate and the deposition of radioactive cesium was measured by using helicopters in the whole area of Japan to investigate the influence of the radioactivity that discharged into the atmosphere due to the disaster of the Fukushima Daiichi NPP (Nuclear Power Plant), Tokyo Electric Power Company (TEPCO), occurred …
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Radioactive cesium accumulation in seaweeds by the …
Radioactive cesium accumulation in seaweeds by the Fukushima 1 Nuclear Power Plant accident-two years' monitoring at Iwaki and its vicinity J Plant Res. 2014;127(1):23-42. doi: 10.1007/s10265-013-0603-1. ... Radiation Monitoring Seawater / …
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ANALYTICAL METHODS
The purpose of this chapter is to describe the analytical methods that are available for detecting, measuring, and/or monitoring cesium, its …
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