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Cesium radioactivity in peripheral blood is linearly correlated to that in skeletal muscle: Analyses of cattle within the evacuation zone of the F ukushima D aiichi Nuclear Power Plant
Author(s) -
Fukuda Tomokazu,
Kino Yasushi,
Abe Yasuyuki,
Yamashiro Hideaki,
Kobayashi Jin,
Shimizu Yoshinaka,
Takahashi Atsushi,
Suzuki Toshihiko,
Chiba Mirei,
Takahashi Shintaro,
Inoue Kazuya,
Kuwahara Yoshikazu,
Morimoto Motoko,
Shinoda Hisashi,
Hiji Masahiro,
Sekine Tsutomu,
Fukumoto Manabu,
Isogai Emiko
Publication year - 2015
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/asj.12301
Subject(s) - caesium , linear correlation , contamination , radiochemistry , chemistry , radioactive contamination , nuclear power plant , environmental science , fukushima nuclear accident , linear relationship , zoology , biology , physics , mathematics , nuclear physics , ecology , statistics , organic chemistry
The accident at the F ukushima D aiichi Nuclear Power Plant ( FNPP ) released a large amount of radioactive substances into the environment. Furthermore, beef contaminated with radioactive cesium above the 500 Bq/kg safety standard was circulated in the food chain in 2011. Japanese consumers remain concerned about the safety of radioactively contaminated food. In our previous study, we detected a linear correlation between radioactive cesium ( 137 C s) activity in blood and muscle around 500 to 2500 Bq/kg in cattle. However, it was unclear whether the correlation was maintained at a lower radioactivity close to the current safety standard of 100 Bq/kg. In this study, we evaluated 17 cattle in the FNPP evacuation zone that had a 137 C s blood level less than 10 Bq/kg. The results showed a linear correlation between blood 137 C s and muscle 137 C s ( Y = 28.0 X , R 2 = 0.590) at low radioactivity concentration, indicating that cesium radioactivity in the muscle can be estimated from blood radioactivity. This technique would be useful in detecting high‐risk cattle before they enter the market, and will contribute to food safety.