Online ISSN: 1884-4111 Print ISSN: 0033-8303

## 原著Article

### 福島第一原子力発電所事故に係る食品中の放射性物質に関する現行の基準値の検証—海産物中の規制対象核種による線量への寄与割合に対する仮定の妥当性—Verification of the Assumption on Contribution Ratio to the Reference Level from Each Radionuclide in Seafood to Derive Criteria for Radionuclide Activity Concentrations for Food in the Existing Exposure Situation Regarding the Fukushima Dai-ichi Nuclear Power Plant Accident

3国立保健医療科学院生活環境研究部Department of Environmental Health, National Institute of Public Health

The current limits for radioactive materials (sum of 134Cs and 137Cs) in food were set taking into account the radiation dose from 134Cs, 137Cs, 90Sr, 106Ru and Pu. Although the limits were based on the concentration ratio of radionuclides in soil etc., it was assumed that radiation doses from radioactive caesium (134Cs+137Cs) were equal to that from other radionuclides in regard to sea foods. In this study, we evaluate the contribution to the radiation dose from 134Cs+137Cs and others. The contribution of radionuclides other than radioactive caesium was less than that assumed when the limits were set.