Modelling the vertical distribution of radionuclides in soil. Part 1: the convection–dispersion equation revisited

Bossew, Peter; Kirchner, Gerald

doi:10.1016/j.jenvrad.2003.08.006

Cited by 119 publications

(102 citation statements)

References 36 publications

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“…5, differences in the 137 Cs activity profiles have been detected. In general, the profiles of SP1, SP2 and SP3 seem to be typical of convectiveediffusive processes (Likar et al, 2001;Bossew and Kirchner, 2004). However, SP2 profile is slightly different.…”

Section: Vertical Migrationmentioning

confidence: 83%

“…Two approaches for modeling the migration of radionuclides in soils have been used, the convectionedispersion equation (ODCDE) with constant parameters, known as the FokkerePlanck equation (Likar et al, 2001;Bossew and Kirchner, 2004) and the serial compartmental model (Kirchner, 1998;Schuller et al, 1997). The ODCDE approach is the most used model to estimate the 137 Cs transport parameters.…”

Section: Introductionmentioning

confidence: 99%

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Inventories and concentration profiles of 137Cs in undisturbed soils in the northeast of Buenos Aires Province, Argentina

Montes

Silva²,

Sa³

et al. 2013

Journal of Environmental Radioactivity

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Cs concentration profiles were attributed to soil properties, especially the clay content and the pH values.A convectionedispersion model with irreversible retention was used to fit the activity concentration profiles. The obtained effective diffusion coefficient and effective convection velocity parameters values were in the range from 0.2 cm 2 /y to 0.4 cm 2 /y and from 0.23 cm/y to 0.43 cm/y, respectively. These data are in agreement with values reported in literature. In general, with the growth of clay content in the soil, there was an increase in the transfer rate from free to bound state. Finally, the highest transfer rate from free to bound state was obtained for soil pH value equal to 8.

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Section: Vertical Migrationmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Inventories and concentration profiles of 137Cs in undisturbed soils in the northeast of Buenos Aires Province, Argentina

Montes

Silva²,

Sa³

et al. 2013

Journal of Environmental Radioactivity

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show abstract

“…A great many studies have already been published on the behavior of this nuclide in various regions in the world. 12,13 In northern hemisphere, it is known that 137 Cs in the environment was derived predominantly from the accident at the Chernobyl nuclear power plant in 1986. There were intensive nuclear bomb tests in the atmosphere in the 1950s and early 1960s on the Pacific Ocean.…”

Section: Photo 1 View Of a Ceiba Tree (Ceiba Trichistandra)mentioning

confidence: 99%

Natural and anthropogenic consequences of tropical forest soils in Northern Peru using environmental radionuclides as radiotracers

Fujiyoshi

Satake

Satō

et al. 2009

J Radioanal Nucl Chem

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Environmental radionuclides ( 40 K, 137 Cs, 210 Pb, 226 Ra) were determined in soils under semi-arid stands, a transition area from thorn to deciduous forest in El Angolo, and heath stands in the Alto Mayo in Northern Peru in order to elucidate their activity level in soil, and to trace underground environment in remote areas of little anthropogenic intervention. Anthropogenic 137 Cs was only found in the uppermost portion of the soils in small amount, whereas the 210 Pb activity was exceptionally high at the soil surfaces in a tropical stand of Alto Mayo. The results suggest a fallout nuclide, 210 Pb, having been transported from local source(s) not to be specified yet.

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“…For constant values of D and V and local equilibrium conditions, total 137 Cs concentration (sorbed and mobile) could be derived from the solution of the following integral (Konshin, 1992;Schuller et al, 1997;Likar et al, 2001;Bossew and Kirchner, 2004):…”

Section: Transport Parametersmentioning

confidence: 99%

Vertical migration of¹³⁷Cs in the South Caspian soil

Vahabi-Moghaddam

Khoshbinfar

2012

Radioprotection

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In order to study the vertical migration of anthropogenic 137 Cs, soil inventories of this radionuclide were measured in two regions selected on the basis of a previous comprehensive survey in the northern Iranian province of Guilan located in the South Caspian region. Ten sampling stations were randomly chosen in these regions and split-level sampling was carried out to a depth of 30 cm. Sample analysis was performed using a HPGe detector system. In situ gamma measurements in both regions were also carried out with the aid of a portable germanium spectrometer. The experimental data were then compared with the solution of the convectiondispersion equation (

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Modelling the vertical distribution of radionuclides in soil. Part 1: the convection–dispersion equation revisited

Cited by 119 publications

References 36 publications

Inventories and concentration profiles of 137Cs in undisturbed soils in the northeast of Buenos Aires Province, Argentina

Inventories and concentration profiles of 137Cs in undisturbed soils in the northeast of Buenos Aires Province, Argentina

Natural and anthropogenic consequences of tropical forest soils in Northern Peru using environmental radionuclides as radiotracers

Vertical migration of¹³⁷Cs in the South Caspian soil

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Modelling the vertical distribution of radionuclides in soil. Part 1: the convection–dispersion equation revisited

Cited by 119 publications

References 36 publications

Inventories and concentration profiles of 137Cs in undisturbed soils in the northeast of Buenos Aires Province, Argentina

Inventories and concentration profiles of 137Cs in undisturbed soils in the northeast of Buenos Aires Province, Argentina

Natural and anthropogenic consequences of tropical forest soils in Northern Peru using environmental radionuclides as radiotracers

Vertical migration of137Cs in the South Caspian soil

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Vertical migration of¹³⁷Cs in the South Caspian soil