Stable and radioactive cesium: A review about
Cesium (stable and radioactive) is taken up by plant roots, although less efficiently than its nutrient analog, potassium. The ratio of the Cs-137:K concentration of …
Simulation of Sediment and Cesium Transport in the Ukedo …
For the purpose of decontaminating radioactive cesium from a huge amount of soil, which has been estimated to be 1.2x10{sup 8} m{sup 3} by excavating to a 5-cm depth from the surface of Fukushima Prefecture where a severe nuclear accident occurred at TEPCO's power generating site and has emitted a significant amount of radioactive …
Stable and radioactive cesium: A review about
Cesium (stable and radioactive) is taken up by plant roots, although less efficiently than its nutrient analog, potassium. The ratio of the Cs-137:K concentration of each organ is expressed as Cs/K discrimination factor (DF); it describes the transport of Cs-137 and K from roots to shoots (Sanches et al., 2008, Nobori et al., 2014). It ...
Model depiction of the atmospheric flows of …
Published: 23 January 2017. Model depiction of the atmospheric flows of radioactive cesium emitted from the Fukushima Daiichi Nuclear Power Station accident. Teruyuki …
Scientists trace the path of radioactive cesium in the …
Scientists trace the path of radioactive cesium in the ecosystem of Fukushima. Interdisciplinary studies on radiocesium …
Assessing Fukushima-Derived Radiocesium in Migratory …
The 2011 release of Fukushima-derived radionuclides into the Pacific Ocean made migratory sharks, teleosts, and marine mammals a source of speculation and anxiety regarding radiocesium (134+137 Cs) contamination, despite a lack of actual radiocesium measurements for these taxa.We measured radiocesium in a diverse suite of large …
JMSE | Free Full-Text | Distributions of Radiocesium and
Previous studies have documented that this radionuclide transport in the North Pacific is a complex influence of the main ocean current and atmospheric input [50,51]. Although less radioactive cesium was observed in the North Pacific in 2014 compared to 2012, Smith et al. ...
Transport and Redistribution of Radiocesium in Fukushima
Fluvial transport of 137 Cs to the ocean from the Abukuma river totaled 12 TBq between June 2011 and August 2015 and almost all this radiocesium (96.5%) was transported in the particulate form. The primary sources of 137 Cs were paddy fields, farmland, and urban areas [plaque-forming unit (PFU)], discharging 85% of the exported …
A tiny radioactive capsule is lost on a highway in Western …
LinkedIn. On January 12 a truck pulled out of Rio Tinto's Gudai-Darri iron ore mine in the Pilbara region of Western Australia and drove 1,400km south to Perth, arriving on January 16. Nine days ...
Reproduction of sediment deposition and prediction …
Radioactive caesium- 137 (137 Cs) can be used as a tracer to infer sediment dynamics due not only to its long radioactive half-life but also its affinity for …
5 SELF-CONTAINED IRRADIATORS | Radiation Source Use …
These costs are primarily for transportation of sources. There is currently no disposal facility available for civilian high- activity cesium sources in the United States. ... Some alternatives to radioactive cesium chloride include radioactive cesium glass and a mineral form (pollucite) loaded with radioactive cesium (described in Chapter 2 ...
Rainfall-Runoff Simulation of Radioactive Cesium Transport …
The radioactivity of cesium in the discharged sediment was higher up to three times as compared with initial field soil in the lysimeter probably due to the transport of the organic matter and the fine soil particles which adsorb radioactive cesium. The losses of radioactive cesium varied from 11.46 to 14.38 MBq ha −1, which were in the range ...
Cesium return program lessons learned FY 1994
The purpose of this report is to compile all the documentation which defines the criteria for Waste Encapsulation and Storage Facility (WESF) cesium capsules at the IOTECH facility and Applied Radiant Energy Corporation (ARECO) to be shipped as special form radioactive material in the Beneficial Uses Shipping System (BUSS) Cask.
Deposition and Dispersion of Radio‐Cesium Released due to …
The dispersion and deposition of radio-cesium (137 Cs) carried by two types (type A and type B) of water-insoluble Cs-bearing solid microparticles (CsMPs) released due to the Fukushima nuclear accident were simulated for the first time.The presence of type B CsMPs (70–400 μm found in soil and 1–5 μm found in air), associated with the hydrogen …
Determination, Separation and Application of 137Cs: A Review
137 Cs (T½= 30.17 y) is among the most important hazardous radionuclides involved in radiological pollution to humans and the environment due to its long half-life and high fission yields [1,2]. 137 Cs, as one of more than 30 isotopes of cesium, is fission a product of 235 U, whose decay chain is shown in Figure 1 [3,4]. 137 Cs decays to short …
Removal of cesium ions from aqueous solutions using …
Radiocesium removal from aqueous solutions is vital yet challenging. As a major fission product of uranium, radiocesium widely exists in radioactive wastewater (Clearfield 2010).Among 30 isotopes of cesium, 133 Cs is the most stable one, whereas 134 Cs (2 year half-life; beta and gamma emission) and 137 Cs (30 year half-life; beta and …
Stable and radioactive cesium: A review about distribution …
In recent years, considerable interest has arisen with regard to the fate and transport of radionuclides such as iodine-131 (131I), cesium-134 (134Cs), and cesium-137 (137Cs) in aquatic environments. … Expand
Stable and radioactive cesium: A review about
In this review we summarize investigations about sources of stable and radioactive cesium in the environment and harmful effects caused by internal and external exposure of plants to radiocesium. Uptake of cesium into cells occurs through molecular mechanisms such as potassium and calcium transporters in the plasma membrane.
Daily variation of I-131, Cs-134 and Cs-137 activity
As this perspective indicates, we can presume that the low concentrations of radioactive cesium observed in Osaka were the radioactive cesium transported and spread to a large scale, spanning the northern hemisphere. In Europe, active concentrations of I-131 were of order 10 −1 –10 −2 and Cs-137 was almost of order 10 −2 mBq/m 3 [8, 9 ...
Transport of radioactive material in liquid sodium
@article{osti_10152798, title = {Transport of radioactive material in liquid sodium}, author = {Brehm, W F}, abstractNote = {This paper describes the development of measurement and control techniques for radioactive materials in liquid sodium systems, as applied to the Fast Flux Test Facility (FFTF). The FFTF is a three-loop, sodium cooled …
Distribution and transportation of Fukushima-derived …
1. Introduction. On March 11, the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident occurred and great amounts of radioactive pollutants were released into the environment, of which ∼80% entered into the Northwest Pacific (Christoudias and Lelieveld, 2013; Yoshida and Kanda, 2012; Lin et al., 2015).Over the past 12 years, the …
Scientists trace the path of radioactive cesium in the …
In 2011, the nuclear accident at Fukushima, Japan, resulted in the deposit of radioactive cesium (radiocesium) into habitats in the vicinity. ... This complicated web of radiocesium transport is ...
Migration behavior of radiostrontium and radiocesium in …
Depth profiles of radioactive cesium in soil using a scraper plate over a wide area surrounding the Fukushima Dai-ichi Nuclear Power Plant, Japan. J. Environ. ... Estimation of radioactive 137-cesium transportation by litterfall, stemflow and throughfall in the forests of Fukushima. Journal of Environmental Radioactivity, Volume 149, 2015, …
Decontamination of low-level contaminated water from radioactive cesium
This study selects microalgae suitable for the decontamination of radioactive cobalt (Co-60) in radioactive solutions based on the decontamination efficiency of Co-60 and Cs-137 by various microalgae. The biosorption rates of Co-60 in the low-level contaminated water have been measured using three different types of microalgae …
FACT SHEET: EPA FACTS ABOUT CESIUM-137
How does cesium change in the environment? Cesium-137 decays in the environment by emitting beta particles. As noted above, cesium-137 decays to a short lived decay product, barium-137m. The latter isotope emits gamma radiation of moderate energy, which further decays to a stable form of barium. Cesium-137 is significant because of its prevalence,
What is the radioactive capsule missing in WA used for and …
The small, round and silver capsule containing radioactive caesium-137 went missing in transportation through Western Australia. The source would continue to be radioactive and detectable above ...
Transportation Guide 32
Transportation Guide 5 CERTIFICATE OF COMPETENT AU THORITY The sealed sources in Troxler gauges meet the U.S. DOT requirements for classification as Special Form Radioactive Material. Special Form materials are designed and constructed to maintain their physical integrity and prevent radioactive contamination even under …
NNSA launches RadSecure 100 radiological security initiative …
Cesium Irradiator Replacement Project (CIRP), which provides incentives to businesses to replace cesium-137 irradiators with non-radioisotopic technologies such as X-ray devices. ... RadSecure 100 also focuses on transportation security so that high-risk radioactive sources - while in transport or being used in the field. ORS works with ...
Fukushima-derived radiocesium in the waters of the …
To understand the transport of Fukushima Dai-ichi Nuclear Power Plant Accident (FDNPPA)-derived nuclear contaminated water, which will be discharged into the Pacific Ocean in the future, the distributions of 134 Cs and 137 Cs in seawater in the public areas east of Japan in winter 2011 were reported in this study. The ranges of 134 Cs and …
Dataset on the 6-year radiocesium transport in rivers …
Radiocesium released from the Fukushima Daiichi nuclear power plant (FDNPP) and deposited in the terrestrial environment has been transported to the sea …
