Estimation of Effect of Radiation Dose Reduction for Internal Exposure by Food Regulations under the Current Criteria for Radionuclides in Foodstuff in Japan Using Monitoring Results
This study examined the effect of food regulations under the current criteria (e.g., 100 Bq/kg for general foods) established approximately a year after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident. Foods are monitored to ensure that foods exceeding the standard limit are not distribu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/10/4/691 |
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| author | Minoru Osanai Daisuke Hirano Shiori Mitsuhashi Kohsei Kudo Shota Hosokawa Megumi Tsushima Kazuki Iwaoka Ichiro Yamaguchi Takakiyo Tsujiguchi Masahiro Hosoda Yoichiro Hosokawa Yoko Saito |
| author_facet | Minoru Osanai Daisuke Hirano Shiori Mitsuhashi Kohsei Kudo Shota Hosokawa Megumi Tsushima Kazuki Iwaoka Ichiro Yamaguchi Takakiyo Tsujiguchi Masahiro Hosoda Yoichiro Hosokawa Yoko Saito |
| author_sort | Minoru Osanai |
| collection | DOAJ |
| description | This study examined the effect of food regulations under the current criteria (e.g., 100 Bq/kg for general foods) established approximately a year after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident. Foods are monitored to ensure that foods exceeding the standard limit are not distributed; ~300,000 examinations per year have been performed especially since FY2014. This study comprehensively estimated the internal exposure dose resulting from the ingestion of foods containing radioactive cesium using the accumulated monitoring results. Committed effective dose was conservatively calculated as the product of the radioactive concentration randomly sampled from test results, food intake, and dose coefficient. The median, 95th, and 99th percentile of the dose were 0.0479, 0.207, and 10.6 mSv/y, respectively, in the estimation with all test results (without regulation), and 0.0430, 0.0790, and 0.233 mSv/y, respectively, in the estimation with results within the standard limits (with regulation) in FY2012. In FY2016, the dose with and without regulation were similar, except for high percentile, and those doses were significantly smaller than 1 mSv/y, which was adopted as the basis for the current criteria. The food regulation measures implemented in Japan after the FDNPP accident have been beneficial, and food safety against radionuclides has been ensured. |
| first_indexed | 2024-03-10T12:56:53Z |
| format | Article |
| id | doaj.art-3481811539d545c8a58723bb66626fd9 |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T12:56:53Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-3481811539d545c8a58723bb66626fd92023-11-21T11:50:46ZengMDPI AGFoods2304-81582021-03-0110469110.3390/foods10040691Estimation of Effect of Radiation Dose Reduction for Internal Exposure by Food Regulations under the Current Criteria for Radionuclides in Foodstuff in Japan Using Monitoring ResultsMinoru Osanai0Daisuke Hirano1Shiori Mitsuhashi2Kohsei Kudo3Shota Hosokawa4Megumi Tsushima5Kazuki Iwaoka6Ichiro Yamaguchi7Takakiyo Tsujiguchi8Masahiro Hosoda9Yoichiro Hosokawa10Yoko Saito11Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori 036-8564, JapanDepartment of Radiological Technology, Hirosaki University School of Health Sciences, Hirosaki, Aomori 036-8564, JapanDepartment of Radiological Technology, Hirosaki University School of Health Sciences, Hirosaki, Aomori 036-8564, JapanDepartment of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori 036-8564, JapanDepartment of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori 036-8564, JapanDepartment of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori 036-8564, JapanCenter for Radiation Protection Knowledge, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Sciences and Technology, Inage, Chiba 263-8555, JapanDepartment of Environmental Health, National Institute of Public Health, Wako, Saitama 351-0197, JapanDepartment of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori 036-8564, JapanDepartment of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori 036-8564, JapanDepartment of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori 036-8564, JapanDepartment of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki, Aomori 036-8564, JapanThis study examined the effect of food regulations under the current criteria (e.g., 100 Bq/kg for general foods) established approximately a year after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident. Foods are monitored to ensure that foods exceeding the standard limit are not distributed; ~300,000 examinations per year have been performed especially since FY2014. This study comprehensively estimated the internal exposure dose resulting from the ingestion of foods containing radioactive cesium using the accumulated monitoring results. Committed effective dose was conservatively calculated as the product of the radioactive concentration randomly sampled from test results, food intake, and dose coefficient. The median, 95th, and 99th percentile of the dose were 0.0479, 0.207, and 10.6 mSv/y, respectively, in the estimation with all test results (without regulation), and 0.0430, 0.0790, and 0.233 mSv/y, respectively, in the estimation with results within the standard limits (with regulation) in FY2012. In FY2016, the dose with and without regulation were similar, except for high percentile, and those doses were significantly smaller than 1 mSv/y, which was adopted as the basis for the current criteria. The food regulation measures implemented in Japan after the FDNPP accident have been beneficial, and food safety against radionuclides has been ensured.https://www.mdpi.com/2304-8158/10/4/691radionuclidesstandard limitsfood monitoring testFukushima Dai-ichi Nuclear Power Plant accidentfood regulationfood safety |
| spellingShingle | Minoru Osanai Daisuke Hirano Shiori Mitsuhashi Kohsei Kudo Shota Hosokawa Megumi Tsushima Kazuki Iwaoka Ichiro Yamaguchi Takakiyo Tsujiguchi Masahiro Hosoda Yoichiro Hosokawa Yoko Saito Estimation of Effect of Radiation Dose Reduction for Internal Exposure by Food Regulations under the Current Criteria for Radionuclides in Foodstuff in Japan Using Monitoring Results Foods radionuclides standard limits food monitoring test Fukushima Dai-ichi Nuclear Power Plant accident food regulation food safety |
| title | Estimation of Effect of Radiation Dose Reduction for Internal Exposure by Food Regulations under the Current Criteria for Radionuclides in Foodstuff in Japan Using Monitoring Results |
| title_full | Estimation of Effect of Radiation Dose Reduction for Internal Exposure by Food Regulations under the Current Criteria for Radionuclides in Foodstuff in Japan Using Monitoring Results |
| title_fullStr | Estimation of Effect of Radiation Dose Reduction for Internal Exposure by Food Regulations under the Current Criteria for Radionuclides in Foodstuff in Japan Using Monitoring Results |
| title_full_unstemmed | Estimation of Effect of Radiation Dose Reduction for Internal Exposure by Food Regulations under the Current Criteria for Radionuclides in Foodstuff in Japan Using Monitoring Results |
| title_short | Estimation of Effect of Radiation Dose Reduction for Internal Exposure by Food Regulations under the Current Criteria for Radionuclides in Foodstuff in Japan Using Monitoring Results |
| title_sort | estimation of effect of radiation dose reduction for internal exposure by food regulations under the current criteria for radionuclides in foodstuff in japan using monitoring results |
| topic | radionuclides standard limits food monitoring test Fukushima Dai-ichi Nuclear Power Plant accident food regulation food safety |
| url | https://www.mdpi.com/2304-8158/10/4/691 |
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