caa a22 4500 465729452 CHVBK 20180323111737.0 cr unu---uuuuu 170327e19901001xx s 000 0 eng 10.1007/BF02040324 doi (NATIONALLICENCE)springer-10.1007/BF02040324 A study on radionuclide association with soil components using a sequential extraction procedure [Elektronische Daten] [G. Riise, H. Bjørnstad, H. Lien, D. Oughton, B. Salbu] Measurements performed in 1986-1988 demonstrate that most of the radiocesium isotopes (137Cs and134Cs) deposited after the Chernobyl accident are still located in the upper soil layers (0-2 cm). The vertical migration appears to be slow, and only a small fraction of the radiocesium has been transferred into the biological cycle. Sequential extraction techniques have been utilized in order to investigate the degree of binding or association between deposited radionuclides (137Cs,134Cs and90Sr) and components in soil. The results indicate that a major fraction of the radiocesium is associated strongly with organic and mineral materials in the litter or upper soil layers: less than 10% is easily leachable. The distribution of137Cs throughout the fractions was similar to that determined for naturally occurring stable cesium (133Cs), implying that isotopic exchange had been extensive. For90Sr, the results show a relatively high leachable fraction. Therefore, present results indicate that radiocesium should be less mobile, and less available for root uptake, than90Sr in soil. Akadémiai Kiadó, 1990 Riise G. Isotope and Electron Microscopy Laboratories, Agriculture University of Norway, P.O. Box 26, N-1432, Aas-NLH, (Norway) aut Bjørnstad H. Isotope and Electron Microscopy Laboratories, Agriculture University of Norway, P.O. Box 26, N-1432, Aas-NLH, (Norway) aut Lien H. Isotope and Electron Microscopy Laboratories, Agriculture University of Norway, P.O. Box 26, N-1432, Aas-NLH, (Norway) aut Oughton D. Department of Chemistry, University of Manchester, Manchester, (England) aut Salbu B. Isotope and Electron Microscopy Laboratories, Agriculture University of Norway, P.O. Box 26, N-1432, Aas-NLH, (Norway) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 142/2(1990-10-01), 531-538 0236-5731 142:2<531 1990 142 10967 https://doi.org/10.1007/BF02040324 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02040324 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Riise G. Isotope and Electron Microscopy Laboratories, Agriculture University of Norway, P.O. Box 26, N-1432, Aas-NLH, (Norway) aut NATIONALLICENCE 700 1- Bjørnstad H. Isotope and Electron Microscopy Laboratories, Agriculture University of Norway, P.O. Box 26, N-1432, Aas-NLH, (Norway) aut NATIONALLICENCE 700 1- Lien H. Isotope and Electron Microscopy Laboratories, Agriculture University of Norway, P.O. Box 26, N-1432, Aas-NLH, (Norway) aut NATIONALLICENCE 700 1- Oughton D. Department of Chemistry, University of Manchester, Manchester, (England) aut NATIONALLICENCE 700 1- Salbu B. Isotope and Electron Microscopy Laboratories, Agriculture University of Norway, P.O. Box 26, N-1432, Aas-NLH, (Norway) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 142/2(1990-10-01), 531-538 0236-5731 142:2<531 1990 142 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer