Contents and Daily Intakes of Gamma-Ray Emitting Nuclides, ^<90>Sr, and ^<238>U using Market-Basket Studies in Japan
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概要
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To investigate the contents of radionuclides in foods marketed in Japan and their daily intakes and exposure doses in adults, we performed market-basket studies concerning radionuclide intakes. The study period was 2003-2005, and the studies were performed in 13 cities in Japan. Foods including drinking water were divided into 14 food groups, and samples were prepared by common cooking procedures. γ-ray emitting nuclides (an artificial radionuclide, radioactive Cs, and natural radionuclides, ^<40>K and U series such as ^<214>Bi, and ^<212>Pb, and Th series) were measured in each food group, and artificial radionuclides, ^<90>Sr and ^<238>U, were measured in a mixed sample of 13 food groups excluding drinking water. The daily intakes in adults were calculated from the concentrations of the radionuclides and mean daily consumption of foods and drinking water. The daily ^<137>Cs and ^<40>K intakes (mBq/person・day) in the 13 cities were 12.5-<79.7 and 57309-95746, respectively. The ^<90>Sr intake from the food groups excluding drinking water was 20.8-53.6, with a mean of 39.2 (mBq/person・day) (deviation of the mean: 23%). Similarly, the daily ^<238>U intake was 5.9-31.1, with a mean of 12.6 (mBq/person・day) (deviation: 60%), showing a more than 5-fold difference between the minimum and maximum values, and there were regional differences. Since the contents of the U series, such as ^<214>Bi and ^<212>Pb, and Th series were lower than the lower detection limits in many samples, their daily intakes were not calculated. Regarding the daily intake of ^<137>Cs from each food group, the intakes from fish and shellfish, milk, meat/eggs, and mushrooms/seaweed tended to be higher. The daily ^<40>K intake from each food group varied among the areas, but the total intake from the 14 food groups was similar in all 13 cities. ^<40>K from these foods accounted for most of the annual effective dose (μSv/person・year) of γ-ray emitting nuclides, and the doses of ^<40>K, ^<90>Sr, and ^<238U were 130-217, 0.21-0.55, and 0.10-0.51, respectively.
- 公益社団法人日本薬学会の論文
- 2007-02-01
著者
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TERADA Hiroshi
Department of Applied Biological Sciences, Faculty of Agricultural Science, Nagoya University
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Takami H
Subaru Telescope Naoj
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杉山 英男
国立公衆衛生院
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Terada H
National Institute Of Public Health
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杉山 英男
Dep. Of Environmental Health National Inst. Of Public Health
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Sugiyama Hideo
Department Of Environmental Health National Institute Of Public Health
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Terada Hiroshi
Department Of Environmental Health National Institute Of Public Health
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Isomura Kimio
Atmospheric Environmental Division, Hyogo Prefectural Institute of Public Health and Environmental S
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Iijima Ikuyo
Chemistry Division, Kanagawa Prefectural Institute of Public Health
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Takahashi Mitsuko
Department of Environmental Health, National Institute of Public Health
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Sugiyama Hidetoshi
Kanagawa Environmental Research Center
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杉山 英男
公衆衛生院
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Iijima Ikuyo
Chemical Div. Kanagawa Prefectural Inst. Of Public Health
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Isomura Kimio
Atmospheric Environmental Division Hyogo Prefectural Institute Of Public Health And Environmental Sc
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Sugiyama Hideo
Dep. Of Environmental Health National Inst. Of Public Health
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Takahashi Mitsuko
Department Of Environmental Health National Institute Of Public Health
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Takahashi Mitsuko
Department Of Endocrinology Tokyo Metropolitan Geriatric Medical Center
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Terada Hiroshi
Department Of Applied Biological Sciences Faculty Of Agricultural Science Nagoya University
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