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Issue 1, 2012
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Edaphic factors affecting the vertical distribution of radionuclides in the different soil types of Belgrade, Serbia

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Abstract

The specific activities of natural radionuclides (40K, 226Ra and 232Th) and Chernobyl-derived 137Cs were measured in soil profiles representing typical soil types of Belgrade (Serbia): chernozems, fluvisols, humic gleysols, eutric cambisols, vertisols and gleyic fluvisols. The influence of soil properties and content of stable elements on radionuclide distribution down the soil profiles (at 5 cm intervals up to 50 cm depth) was analysed. Correlation analysis identified associations of 40K, 226Ra and 137Cs with fine-grained soil fractions. Significant positive correlations were found between 137Cs specific activity and both organic matter content and cation exchange capacity. Saturated hydraulic conductivity and specific electrical conductivity were also positively correlated with the specific activity of 137Cs. The strong positive correlations between 226Ra and 232Th specific activities and Fe and Mn indicate an association with oxides of these elements in soil. The correlations observed between 40K and Cr, Ni, Pb and Zn and also between 137Cs and Cd, Cr, Pb and Zn could be attributed to their common affinity for clay minerals. These results provide insight into the main factors that affect radionuclide migration in the soil, which contributes to knowledge about radionuclide behaviour in the environment and factors governing their mobility within terrestrial ecosystems.

Graphical abstract: Edaphic factors affecting the vertical distribution of radionuclides in the different soil types of Belgrade, Serbia

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Publication details

The article was received on 09 Jun 2011, accepted on 13 Oct 2011 and first published on 10 Nov 2011


Article type: Paper
DOI: 10.1039/C1EM10457H
J. Environ. Monit., 2012,14, 127-137

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    Edaphic factors affecting the vertical distribution of radionuclides in the different soil types of Belgrade, Serbia

    S. Dragović, B. Gajić, R. Dragović, L. Janković-Mandić, L. Slavković-Beškoski, N. Mihailović, M. Momčilović and M. Ćujić, J. Environ. Monit., 2012, 14, 127
    DOI: 10.1039/C1EM10457H

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