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Distribution of radioactive cesium and its seasonal variations in cattle living in the 'difficult-to-return zone' of the Fukushima nuclear accident

机译:福岛核事故“难返地带”中牛的放射性铯分布及其季节性变化

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The amount of radioactive cesium in various tissues of cattle which lived in the highly contaminated area designated as the "difficult-to-return zone", was measured in May and December of 2014. The average concentration of radioactive cesium in the skeletal muscles ranged from 3900 to 5500Bq/kg, and there was no significant difference between May and December. The sirloin (in December), tenderloin and top round (in May and December) showed significantly higher concentrations of cesium than the neck muscle, which is generally used for the radioactivity inspection. The Longus colli muscle, which is also used for the inspection in some institutions, showed the same radioactivity as the neck muscle. Study results indicated that relative cesium concentrations in internal organs were higher in May compared to December. There were high correlations of cesium concentration between the blood and other tissues. However, regression coefficients between the blood and muscles were significantly higher in December than those in May. When radioactivity in the neck or Longus colli muscles between 50 to 100Bq/kg is detected, the slaughtered cattle should be re-inspected using another muscle, such as top round or sirloin, to prevent marketing of meat that violates the criteria of the Food Sanitation Act.
机译:2014年5月和2014年12月,对生活在高度污染区域(称为“难返回区”)的牛的各种组织中的放射性铯含量进行了测量。骨骼肌中放射性铯的平均浓度范围为3900至5500Bq / kg,5月和12月之间没有显着差异。牛lo(12月),里脊和上一轮(5月和12月)显示铯的浓度明显高于通常用于放射性检查的颈部肌肉。在某些机构中也使用了Longus colli肌肉进行检查,它显示出与颈部肌肉相同的放射性。研究结果表明,五月份内部器官中的相对铯浓度高于十二月份。血液与其他组织之间的铯浓度高度相关。但是,12月血液和肌肉之间的回归系数显着高于5月。当检测到颈部或Longus结肠肌肉的放射性介于50至100Bq / kg之间时,应使用另一只肌肉(例如上轮或牛or)对被屠宰的牛进行重新检查,以防止销售违反食品卫生标准的肉类法案。

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