cesium 137 migration

cesium 137 migration

Migration of Cesium‐137 in typical soils of North Germany ...

The Podzol presented a high migration with marked Cs-137 losses in the top soil. The Gleysol showed the lowest migration down to 10 cm depth. A nearly similar pattern at the top was found within the Histosol, however, a ratio of 10% Cs-137 in the 10–15 cm section indicated a deeper migration.

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Radioactivity of 137Cs in Papers and Migration of the ...

2010-10-13  Cesium-137 radioactivity removed during paper manufacturing in the year 2000 in Japan was estimated to be 15 GBq, and the influence of paper manufacturing on the migration of 137 Cs in the environment was discussed.

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Vertical migration studies of 137Cs from nuclear weapons ...

The vertical migration of (137)Cs originating from nuclear weapons fallout (NWF) and the Chernobyl accident has been studied at 33 sampling sites in western Sweden. An attempt to describe the present depth distribution with a solution to the convection-diffusion equation (CDE) with a pulse-like fall

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Radiocesium migration in the litter layer of different ...

2018-7-1  Cesium-137 (137 Cs) migration in the litter layer consists of various processes, such as input via throughfall, output via litter decomposition, and input from deeper layers via soil organism activity.We conducted litter bag experiments over 2 years (December 2014–November 2016) to quantify the inputs and outputs of 137 Cs in the litter layer in a Japanese cedar plantation (Cryptomeria ...

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Radiocesium migration in the litter layer of different ...

Cesium-137 (137Cs) migration in the litter layer consists of various processes, such as input via throughfall, output via litter decomposition, and input from deeper layers via soil organism activity. We conducted litter bag experiments over 2 years (December 2014-November 2016) to quantify the inputs and outputs of 137Cs in the litter layer in ...

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Mathematical simulation of vertical migration of137Cs ...

I. E. Konstantinov, "Prediction of cesium-137 migration in soil," Pochvovedenie, No. 5, 13. 15. V. G. Grakovskii, "Use of computers in compiling a prediction of the migration of radionuclides in soils," in: Soil Science and Agrochemical Research with Computers [in Russian], Gidrometeoizdat, Moscow (1981), pp. 80–84. Google Scholar

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Continuous nitrogen fertilization retards the vertical

2020-4-24  Continuous nitrogen fertilization retards the vertical migration of Fukushima nuclear accident-derived cesium-137 in apple orchard soil. Science of the Total Environment ( IF 7.963 ) Pub Date : 2020-04-24 , DOI: 10.1016/j.scitotenv.2020.138903

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Continuous nitrogen fertilization retards the vertical ...

2020-8-20  We monitored the levels of cesium-137 (137 Cs) in the soils of five orchards for six years following the Fukushima Daiichi Nuclear Power Plant accident on 11 March 2011 and found that the vertical distribution of accident-derived 137 Cs varied significantly among the orchards with varying land-use and fertilizer management.Based on these results, this study evaluated how nitrogen (N ...

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Continuous nitrogen fertilization retards the vertical ...

Application of a cesium bromide (133 CsBr) tracer suggested that the retarded vertical migration of 137 Cs in the N plot may be related to significantly lower amounts of exchangeable 133 Cs and significantly higher proportions of non-exchangeable 133 Cs in the upper 2 cm.

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Storage and Migration of Fallout Strontium‐90 and Cesium ...

1993-10-1  The vertical migration of 90 Sr and 117 Cs produced by the explosion of the atomic bomb in 1945 was investigated in an unsaturated soil layer in the Nishiyama area of Nagasaki. The in situ migration rates of 90 Sr and 137 Cs were estimated to be 4.2 mm yr −1 and 1.0 mm yr −1, respectively, when the rate of movement of soil water was 2500 mm yr −1.The in situ K d values of 90 Sr and 137 ...

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(PDF) A simulation model of 3D migration of Cs-137 in soils

The horizontal migration of cesium-137 washed out with soils from interfluves adjoining the balka and stored in accumulative facies are studied by example of the Chasovenkov Verkh balka, the town ...

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Characterizing vertical migration of 137 Cs in organic ...

2019-9-10  Cesium-137 migration from the organic layer to the underlying mineral soil was represented by a two-component exponential model. Cesium-137 migration from the organic layer was faster than that observed in European forests, suggesting that the mobility and bioavailability of 137 Cs could be suppressed rapidly in Japanese forests.

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Evaluation of Migration of Cesium-137 Adsorbed on Fine ...

2018-6-5  KEYWORDS: radionuclide migration, cesium 137, aerated soil layer, fine soil particl(!B, size distribution, size dependency, filtration, evaluation I. INTRODUCTION The soil layer around a facility for radio­ active waste disposal is called a "natural barrier" and should be selected to prevent the

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Radiocesium migration in the litter layer of different ...

Cesium-137 (137Cs) migration in the litter layer consists of various processes, such as input via throughfall, output via litter decomposition, and input from deeper layers via soil organism activity. We conducted litter bag experiments over 2 years (December 2014-November 2016) to quantify the inputs and outputs of 137Cs in the litter layer in ...

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Storage and migration of fallout strontium-90 and cesium ...

1993-10-1  @article{osti_223873, title = {Storage and migration of fallout strontium-90 and cesium-137 for over 40 years in the surface soil of Nagasaki}, author = {Mahara, Yasunori}, abstractNote = {The vertical migration of {sup 90}Sr and {sup 137}Cs produced by the explosion of the atomic bomb in 1945 was investigated in an unsaturated soil layer in the Nishlyama am of Nagasaki.

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Movements and Storages of Radiocesium in a Forest ...

2021-7-29  Migration of Radioactive Cesium from Tree Crowns to the Forest Floor Among the three plots, the greatest migration of 137 Cs from tree crowns to the forest floor via litterfall was observed in the artificial cedar forest ( Table 1 ) 14) .

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Continuous nitrogen fertilization retards the vertical ...

2020-8-20  We monitored the levels of cesium-137 (137 Cs) in the soils of five orchards for six years following the Fukushima Daiichi Nuclear Power Plant accident on 11 March 2011 and found that the vertical distribution of accident-derived 137 Cs varied significantly among the orchards with varying land-use and fertilizer management.Based on these results, this study evaluated how nitrogen (N ...

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Role of filamentous fungi in migration of radioactive ...

Role of filamentous fungi in migration of radioactive cesium in the Fukushima forest soil ... the TFs of wild mushroom and those of fungal hyphae of 704 stock strains grown on agar medium containing nutrients and 137 Cs showed that the TFs of wild mushroom were lower. The TF was less than 0.1 after the addition of the minerals zeolite ...

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Quantitative modeling of radioactive cesium

2021-5-11  Here we modeled the time course of radioactive cesium (134 Cs + 137 Cs) concentrations in boar and black bears from Fukushima Prefecture over ~ 7

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Environmental Remediation Examples and Remediation ...

2021-1-3  Cesium-137 Concentration on the Land Surface (in 80-km) 17. Construction of Web-Based Five Detailed Environmental Remediation Distribution Maps ... for134 Cs and 137 Cs Land Surface: Radionuclide migration amount Radionuclide adsorption

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Characterizing vertical migration of 137 Cs in organic ...

2019-9-10  Cesium-137 migration from the organic layer to the underlying mineral soil was represented by a two-component exponential model. Cesium-137 migration from the organic layer was faster than that observed in European forests, suggesting that the mobility and bioavailability of 137 Cs could be suppressed rapidly in Japanese forests.

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(PDF) A simulation model of 3D migration of Cs-137 in soils

The horizontal migration of cesium-137 washed out with soils from interfluves adjoining the balka and stored in accumulative facies are studied by example of the Chasovenkov Verkh balka, the town ...

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Evaluation of Migration of Cesium-137 Adsorbed on Fine ...

2018-6-5  KEYWORDS: radionuclide migration, cesium 137, aerated soil layer, fine soil particl(!B, size distribution, size dependency, filtration, evaluation I. INTRODUCTION The soil layer around a facility for radio­ active waste disposal is called a "natural barrier" and should be selected to prevent the

Read More
Radiocesium migration in the litter layer of different ...

Cesium-137 (137Cs) migration in the litter layer consists of various processes, such as input via throughfall, output via litter decomposition, and input from deeper layers via soil organism activity. We conducted litter bag experiments over 2 years (December 2014-November 2016) to quantify the inputs and outputs of 137Cs in the litter layer in ...

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Estimation of cesium-137 migration intensity in typical ...

The research results of vertical "1"3"7Cs migration in four types of soils specific to the Republic of Belarus are presented. It is shown that after 20 years of the Chernobyl accident diffusion is still the dominating mechanism of vertical migration as it was in th

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Cesium Traces To Identify Fish Migration Patterns

2014-2-25  Cesium-137 is present in seawater anyway as a result of the fallout from atomic weapons testing, but the two year half-life of caesium-134 means the contamination can be tied directly to Fukushima. According to the scientists there is no

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Movements and Storages of Radiocesium in a Forest ...

2021-7-29  Migration of Radioactive Cesium from Tree Crowns to the Forest Floor Among the three plots, the greatest migration of 137 Cs from tree crowns to the forest floor via litterfall was observed in the artificial cedar forest ( Table 1 ) 14) .

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Successful Migration from Radioactive Irradiators to X-ray ...

2019-6-20  The results from comparison studies were promising, which led to the decision of permanent migration of all cesium irradiators to x-ray irradiators. As of January 2018, Mount Sinai successfully disposed all its 137 Cs irradiators. At this time, Mount Sinai, as one of the largest health care institutions in NY with about 50,000 employees, has ...

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Role of filamentous fungi in migration of radioactive ...

Role of filamentous fungi in migration of radioactive cesium in the Fukushima forest soil ... the TFs of wild mushroom and those of fungal hyphae of 704 stock strains grown on agar medium containing nutrients and 137 Cs showed that the TFs of wild mushroom were lower. The TF was less than 0.1 after the addition of the minerals zeolite ...

Read More
Quantitative modeling of radioactive cesium

2021-5-11  Here we modeled the time course of radioactive cesium (134 Cs + 137 Cs) concentrations in boar and black bears from Fukushima Prefecture over ~ 7

Read More