著者

SANADA Tetsuya

出版者

日本保健物理学会

雑誌

保健物理 : hoken buturi (ISSN:03676110)

巻号頁・発行日

vol.43, no.2, pp.144-145, 2008-06

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Knowledge of radioactivity levels and the behavior of radionuclides in the environment are important in terms of radiation protection. Artificial radionuclides are already distributed in the environment as products of atmospheric nuclear tests and nuclear power plants. However, naturally occurring radioactive material (NORM) and technologically enhanced NORM (TENORM) associated with consumer goods have also become of concern. Radon, for example, represents a large contribution to natural radiation. The Japan Chemical Analysis Center (JCAC) has carried out a series of nationwide surveys under the auspices of the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan. This communication presents an outline of the environmental radioactivity survey and its implementation by the JCAC.

著者

太田 智子 Sanada Tetsuya Kashiwara Yoko MORIMOTO Takao SATO Kaneaki

出版者

日本保健物理学会

雑誌

保健物理 : hoken buturi (ISSN:03676110)

巻号頁・発行日

vol.44, no.1, pp.80-88, 2009-03-01

参考文献数

18

被引用文献数

2 19

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Radioactivity levels in 137 foods commonly consumed daily in Japan were evaluated to determine the committed effective dose in the Japanese adults. The levels of radioactivity for ²³⁸U, ²³²Th, ²²⁶Ra, ²¹⁰Pb, ²¹⁰Po, ⁹⁰Sr, ¹³⁷Cs and ^239+240Pu were ND-5.2 Bq/kg fresh weight, ND-0.18 Bq/kg fresh weight, ND-3.9Bq/kg fresh weight, ND-45 Bq/kg fresh weight, ND-120 Bq/kg fresh weight, ND-9.9 Bq/kg fresh weight, ND-19 Bq/kg fresh weight and ND-0.010 Bq/kg fresh weight, respectively. The committed effective dose was estimated to be 0.80 mSv from the intake of the foods. The effective dose was greater than the world mean value for adults of 0.12 mSv by natural radioactive elements in the uranium and thorium series from the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) 2000 because of the large contribution from ²¹⁰Po in seafood.