caa a22 4500 469113820 CHVBK 20180323133118.0 cr unu---uuuuu 170328e19921101xx s 000 0 eng 10.1007/BF02163839 doi (NATIONALLICENCE)springer-10.1007/BF02163839 Activity concentration of226Ra and238U in various soils [Elektronische Daten] [E. Yunoki, T. Kataoka, K. Michihiro, H. Sugiyama, M. Shimizu, T. Mori] The distribution of226Ra and238U in various soils has been studied. Supposing that radioactive equilibrium were in existence, the average activities of226Ra and238U would show a nearly 1∶1 correlation. As weathering affects radioactive equilibrium in surface soil, radioactive equilibrium was not in existence. Therefore, four kinds of soil were selected from different weathering conditions, viz. river bed soil, paddy field soil, field soil and uncropped soil. The226Ra/238U ratio of various soils lies in the range of 1.63 to 2.41. The activity concentrations of226Ra were greater than238U in various soils. The ratio226Ra/238U can be shown to be a quantitative index of weathering. Phosphatic manure contains238U and its daughter isotopes in concentrations far exceeding the average abundance in the earth's crust. But the cultivated soils (paddy field soil, field soil) are not affected by fertilizers in Kamisaibara. Akadémiai Kiadó, 1992 Yunoki E. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut Kataoka T. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut Michihiro K. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut Sugiyama H. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut Shimizu M. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut Mori T. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 166/4(1992-11-01), 331-341 0236-5731 166:4<331 1992 166 10967 https://doi.org/10.1007/BF02163839 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02163839 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yunoki E. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut NATIONALLICENCE 700 1- Kataoka T. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut NATIONALLICENCE 700 1- Michihiro K. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut NATIONALLICENCE 700 1- Sugiyama H. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut NATIONALLICENCE 700 1- Shimizu M. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut NATIONALLICENCE 700 1- Mori T. Okayama Prefectural Institute for Environmental Science and Public Health, 739-1, Uchio, 701-02, Okayama, Japan aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 166/4(1992-11-01), 331-341 0236-5731 166:4<331 1992 166 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer