Effects of physical-chemical properties of soils on ^sup 60^Co and ^sup 65^Zn bioavailability

• Published in: Journal of soils and sediments Vol. 15; no. 11; p. 2232
• Main Authors: Anisimov, Vyacheslav Sergeevich, Kochetkov, Ilia Vladimirovich, Dikarev, Dmitry Vladimirovich, Anisimova, Lydia Nikolaevna, Korneev, Yuri Nikolaevich
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Nature B.V 01.11.2015
• Subjects: Barley; Bioavailability; Chemical properties; Decomposing organic matter; Discriminant analysis; Fulvic acids; Humus; Radioactivity; Radioisotopes; Soil properties; Soil sciences; Soil types; Statistical analysis; Trace elements; Zinc
• ISSN: 1439-0108; 1614-7480
• DOI: 10.1007/s11368-015-1153-z

Purpose The purposes of the paper are to estimate the inactivating power of soils in relation to radiologically important long-lived radionuclides ^sup 65^Zn and ^sup 60^Co and to develop methodological approaches for assessing effects of edaphic factors on the radionuclides mobility in the soil-plant system. Materials and methods For the experimental studies, different soil samples were collected (16 soil types, classes, and subclasses). A model experiment was carried out in a greenhouse where barley plants were grown under controlled conditions for 2 weeks on soils artificially contaminated by ^sup 65^ZnCl^sub 2^ and ^sup 60^CoCl^sub 2^. The biological availability of stable "natural" Zn, which is an aggregate of stable nuclides, radionuclides ^sup 65^Zn and ^sup 60^Co, was determined using the concentration ratio (CR). The physical and chemical parameters of soil (pH, the sum of silt, and clay particles (<0.01 mm) content, Fe mobile, P mobile, humus content, a ratio of humic and fulvic acid carbon (C^sub HA^/C^sub FA^), contents of mobile forms of elements (Co, Zn)) were determined. Experimental data were subjected to statistical analysis. Results and discussion An effort has been made to quantify the relationships between the parameters describing physical-chemical properties of soils and those that characterize ^sup 65^Zn and ^sup 60^Co bioavailability. A methodological approach has been used, which employs natural diversity of physical-chemical properties of different types and kinds of noncarbonate and carbonate soils in the European part of Russia, to find relevant relationships. The use of radioactive isotopes of trace elements provides an opportunity to predict the behavior of the technogenous origin metals in the soil-plant system. Conclusions Methodological approach for estimation of soil characteristic contribution to common inactivating capacity in relation to radionuclide migration in the soil-plant system was suggested. On its basis, a scale of soil inactivating capacity can be developed. The derived results allow ranking of the selected physical-chemical parameters of soils by their influence on CR (^sup 65^Zn or ^sup 60^Co) value in barley.