Estimation of dietary intake of 90Sr in Japan after the Fukushima Daiichi Nuclear Power Plant accident: market basket study, 2013–2018. Issue 12 (2nd December 2022)

• Record Type: Journal Article
• Authors: Nabeshi, Hiromi; Hachisuka, Akiko; Matsuda, Rieko; Teshima, Reiko; Akiyama, Hiroshi; Tsutsumi, Tomoaki
• Is Part Of: Food additives & contaminants. Volume 39:Issue 12(2022)
• Page Start: 1974
• Page End: 1986
• Publication Date: 2022-12-02
• Subjects: Fukushima Daiichi Nuclear Power Plant accident -- strontium-90 -- dietary intake -- annual committed effective dose -- Market basket study -- low background 2π gas-flow counter; Food additives -- Periodicals; Food contamination -- Periodicals; 664.06
• DOI: 10.1080/19440049.2022.2129099
• Languages: English
• ISSNs: 1944-0049

Abstract

Abstract: Radionuclide contamination in foods has been a public concern in Japan after the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident. To estimate time and regional trends of daily intake and annual committed effective dose of strontium-90 ( 90 Sr) after the accident, we analysed Market basket samples using a low background 2π gas-flow counter. Samples were collected from six regions, once a year from 2013 to 2018. There appeared to be little variation in estimated daily intake and annual committed effective dose of 90 Sr across the time periods and regions. The estimated maximum annual committed effective dose of 90 Sr was 0.00076 mSv/year, a value sufficiently lower than the intervention exemption level, 1 mSv/year, in foods in Japan. There was no noticeable difference between the range of estimated daily intake of 90 Sr in this study compared with daily intake measured before the FDNPP accident. These results suggested that no obvious increase in dietary intake of 90 Sr was observed after the FDNPP accident, and that the effects on commercial foods from 90 Sr due to the FDNPP accident were negligible.