Total Diet Study to Assess Radioactive Cs and 40K Levels in the Japanese Population before and after the Fukushima Daiichi Nuclear Power Plant Accident
| Autor: | Kimio Isomura, Hideo Sugiyama, Hiroshi Terada, Ikuyo Iijima, Sadaaki Miyake |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Health
Toxicology and Mutagenesis lcsh:Medicine 01 natural sciences Effective dose (radiation) 030218 nuclear medicine & medical imaging law.invention Food group Toxicology potassium-40 03 medical and health sciences 0302 clinical medicine total diet study law Activity concentration Nuclear power plant dose assessment Diet study Dietary exposure 010401 analytical chemistry lcsh:R Public Health Environmental and Occupational Health Japanese population 0104 chemical sciences radioactive cesium Fukushima daiichi Fukushima accident Environmental science dietary intake |
| Zdroj: | Epub 2020 Nov 3 International Journal of Environmental Research and Public Health, Vol 17, Iss 8131, p 8131 (2020) International Journal of Environmental Research and Public Health Volume 17 Issue 21 |
| ISSN: | 1660-4601 |
| Popis: | We conducted a total diet study (TDS) of 137Cs, 134Cs, and 40K to assess their average dietary exposure levels in a Japanese adult population before and after the Fukushima Daiichi nuclear power plant (FDNPP) accident. Nineteen market baskets were evaluated in 2006&ndash 2011. In each basket, a TDS sample comprising tap water and 160&ndash 170 food items, which were combined into 13 groups, were collected for analysis by gamma-ray spectrometry. From 2006 to 2010, the 137Cs activity concentration in the &ldquo fish and shellfish&rdquo group was 0.099 Bq/kg, representing the highest value obtained, whereas the total committed effective dose (CED) of radiocesium isotopes (137Cs + 134Cs) was 0.69 &mu Sv. In 2011, &ldquo milk and dairy products&rdquo from Sendai City had a Cs activity concentration of 12 Bq/kg, representing the highest values among all food groups studied. However, the annual CED of radioactive Cs in Fukushima City was 17 &mu Sv after the FDNPP accident, which is 60-fold lower than the maximum permissible dose of 1 mSv/year. The mean CED obtained for 40K was 180 &mu Sv, which is comparable to the global average. Our results reveal the average dietary exposure of 137Cs, 134Cs, and 40K, which can aid in estimating the radiological safety of foods. |
| Databáze: | OpenAIRE |
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