References
- Yunoki , E. , Kataoka , T. , Michiro , K. , Sugiyama , H. , Shimizu , M. and Mori , T. 1993 . “Activity concentrations of 238U and 226Ra in agricultural samples” . J. Radioanal. Nucl. Chem. , 174 : 223 – 228 .
- Narayana , Y. , Radhakrishna , A. P. , Somashekarappa , H. M. , Karunakara , N. , Balakrishna , K. M. and Siddappa , K. 1995 . “Distribution of some natural and artificial radionuclides in the environment of coastal Karnataka of south India” . J. Environ. Radioact. , 28 : 113 – 139 .
- Radhakrishna , A. P. , Somashekarappa , H. M. , Narayana , Y. and Siddappa , K. 1996 . “Distribution of some natural and artificial radionuclides in Mangalore environment of India” . J. Environ. Radioact. , 30 : 31 – 54 .
- Sasaki , T. , Tashiro , Y. , Fujinaga , H. , Ishii , T. and Gunji , Y. 2002 . “Determination of transfer factors of uranium, thorium, radium and lead from soil to agricultural product in Japan for estimating internal radiation dose through ingestion” . Hokenbutsuri (Jpn. J. Health Phys.) , 37 : 208 – 221 . [in Japanese]
- International Atomic Energy Agency . 1994 . Handbook of Parameter Values for the Prediction of Radionuclide Transfer in Temperate Environments, Technical Report Series 364 , IAEA, Vienna
- Uchida , S. and Tagami , K. 2007 . “Estimation of the amount of anthropogenic uranium in 112 Japanese agricultural soil samples due to application of phosphatic fertilizers” . In Proc. NORM V Seville , , Spain Mar. 19–22, 2007
- Food and Agriculture Organization of the United Nations . 2005 . Soil Map of the World. Revised Legend. World Soil Resources Report 60 , FAO, Rome
- Cultivated Soil Classification Committee . 2005 . Classification of Cultivated Soils in Japan—Third Approximation—, Miscellaneous Publication of National Institute for Agro-Environmental Sciences No. 17 , NIAES, Tsukuba [in Japanese]
- Ministry of Education, Culture, Sports, Science and Technology, Japan . 1990 . Analytical Methods for the Determination of Radium. Standard Radioactivity Analysis and Measurement Methods Manuals Series No. 19. , MEXT, Tokyo [in Japanese]
- Uchida , S. , Tagami , K. and Hirai , I. 2007 . “Soil-to-plant transfer factors of stable elements and naturally occurring radionuclides: (2) Rice collected in Japan” . J. Nucl. Sci. Technol. , 44 : 779 – 790 .
- Uchida , S. and Tagami , K. 2007 . “Soil-to-crop transfer factors of radium in Japanese agricultural fields” . J. Nucl. Radiochem. Sci. , 8 : 137 – 142 .
- Bettencourt , A. O. , Teixeira , M. M. G. R. , Elias , M. D. T. and Faisca , M. C. 1988 . “Soil to plant transfer of radium-226” . J. Environ. Radioact. , 6 : 49 – 60 .
- Sheppard , S. C. , Sheppard , M. I. , Tait , J. C. and Sanipelli , B. L. 2006 . “Revision and meta-analysis of selected biosphere parameter values for chlorine, iodine, neptunium radium, radon and uranium” . J. Environ. Radioact. , 89 : 115 – 137 .
- Research and investigation committee of food composition . 2001 . Standard Tables of Food Composition in Japan. Fifth Revised and Enlarged Edition. Tokyo : Ishiyaku Publishers . [in Japanese]