Preparation and certification of certified reference materials of fish meat and ashed bone for determination of 90Sr and radiocesium after Fukushima Daiichi Nuclear Power Plant
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Certified reference materials (CRMs) of the fish meat powder and the fish bone ash for validation of measurement of anthropogenic nuclides (134Cs, 137Cs and 90Sr) related the Fukushima Daiichi nuclear power plant accident were developed using an inter-laboratory comparison. This paper discusses the strategy of development including selection of raw material, the preparation and certification procedures applied for CRM production. In particular, some detailed data are presented for the homogeneity study and inter-laboratory experiment for the certification. The results of inter-laboratory comparison not only to certify CRMs but also showed analytical performance of the anthropogenic nuclides in Japanese laboratories.
KeywordsCertified reference material 90Sr Fukushima Daiichi Nuclear Power Plant 134Cs 137Cs Fish bone ash Fish meat powder Inter-laboratory comparison
This work is partly supported by Japan Science and Technology Agency (JST) through “Development of Systems and Technology for advanced Measurement and Analysis” program. We are grateful to the laboratories participating in the inter-laboratory comparisons for reference material certification. The participant organizations are listed as follows: Tokyo City University, Atomic Energy Research Laboratory at Tokyo City University, Meiji University, Isotope Science Center at the University of Tokyo, Center for Water Environment Studies at Ibaraki University, Kanazawa University, National Institute of Health Science, Meteorological Research Institute, Environmental Radioactivity Monitoring Center of Fukushima, Environmental Radioactivity Monitoring Center of Ibaraki, Japan Chemical Analysis Center, Japan Radioisotope Association, Japan Food research Laboratories, Kyusho Environmental Evaluation Association, National Metrology Institute of Japan, National Institute of Radiological Sciences, Japan Atomic Energy Agency, National Institute for Agro-Environmental Sciences, National Research Institute of Fisheries Science, NS Environmental Science Consultant Corporation, KANSO Co.Ltd., R&D Center Nippon Meat Packers Inc. and KAKEN Co.Ltd.
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