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In situ determination of 137Cs inventory in soil using a field-portable scintillation gamma spectrometer-dosimeter

Ramzaev, V. ; Bernhardsson, C. LU orcid ; Dvornik, A. ; Barkovsky, A. ; Vodovatov, A. LU and Jönsson, M. LU (2021) In Journal of Environmental Radioactivity 231.
Abstract

A new empirical method for in situ determination of the inventory of 137Cs in soil (ACs, kBq m−2) at grasslands and forests using a field-portable NaI(Tl) scintillation spectrometer-dosimeter was developed. The method is based on evaluation of the ambient dose equivalent build-up factor. The practical implementation of the new method with the spectrometer-dosimeter does not require a priori knowledge of the vertical distribution of 137Cs in soil. Moreover, the method allows assessing a value of the mean migration depth of 137Cs in soil (Z) in terms of g cm−2. The 95% confidence interval for the mean value of the conversion coefficients from the ambient dose equivalent... (More)

A new empirical method for in situ determination of the inventory of 137Cs in soil (ACs, kBq m−2) at grasslands and forests using a field-portable NaI(Tl) scintillation spectrometer-dosimeter was developed. The method is based on evaluation of the ambient dose equivalent build-up factor. The practical implementation of the new method with the spectrometer-dosimeter does not require a priori knowledge of the vertical distribution of 137Cs in soil. Moreover, the method allows assessing a value of the mean migration depth of 137Cs in soil (Z) in terms of g cm−2. The 95% confidence interval for the mean value of the conversion coefficients from the ambient dose equivalent build-up factor to ACs and to Z is less than 10%. The new method has been developed and verified using published data that where obtained at territories in Russia and Belarus heavily contaminated with 137Cs (ACs > 37 kBq m−2) due to the Chernobyl accident. Therefore, the survey of less contaminated areas requires additional validation of this method.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cs, Dose build-up factor, In situ, Inventory, Soil, Spectrometer-dosimeter
in
Journal of Environmental Radioactivity
volume
231
article number
106562
publisher
Elsevier
external identifiers
  • pmid:33667829
  • scopus:85101765808
ISSN
0265-931X
DOI
10.1016/j.jenvrad.2021.106562
project
Radiation protection in Eastern Europe
language
English
LU publication?
yes
id
4a01482a-4fe0-49e1-b0d5-16a23fefc7e0
date added to LUP
2021-12-23 10:42:39
date last changed
2025-03-24 02:42:04
@article{4a01482a-4fe0-49e1-b0d5-16a23fefc7e0,
  abstract     = {{<p>A new empirical method for in situ determination of the inventory of <sup>137</sup>Cs in soil (A<sub>Cs</sub>, kBq m<sup>−2</sup>) at grasslands and forests using a field-portable NaI(Tl) scintillation spectrometer-dosimeter was developed. The method is based on evaluation of the ambient dose equivalent build-up factor. The practical implementation of the new method with the spectrometer-dosimeter does not require a priori knowledge of the vertical distribution of <sup>137</sup>Cs in soil. Moreover, the method allows assessing a value of the mean migration depth of <sup>137</sup>Cs in soil (Z) in terms of g cm<sup>−2</sup>. The 95% confidence interval for the mean value of the conversion coefficients from the ambient dose equivalent build-up factor to A<sub>Cs</sub> and to Z is less than 10%. The new method has been developed and verified using published data that where obtained at territories in Russia and Belarus heavily contaminated with <sup>137</sup>Cs (A<sub>Cs</sub> &gt; 37 kBq m<sup>−2</sup>) due to the Chernobyl accident. Therefore, the survey of less contaminated areas requires additional validation of this method.</p>}},
  author       = {{Ramzaev, V. and Bernhardsson, C. and Dvornik, A. and Barkovsky, A. and Vodovatov, A. and Jönsson, M.}},
  issn         = {{0265-931X}},
  keywords     = {{Cs; Dose build-up factor; In situ; Inventory; Soil; Spectrometer-dosimeter}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Environmental Radioactivity}},
  title        = {{In situ determination of <sup>137</sup>Cs inventory in soil using a field-portable scintillation gamma spectrometer-dosimeter}},
  url          = {{http://dx.doi.org/10.1016/j.jenvrad.2021.106562}},
  doi          = {{10.1016/j.jenvrad.2021.106562}},
  volume       = {{231}},
  year         = {{2021}},
}