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首页> 美国卫生研究院文献>other >Concentration of Radiocesium in the Wild Japanese Monkey (Macaca fuscata) over the First 15 Months after the Fukushima Daiichi Nuclear Disaster
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Concentration of Radiocesium in the Wild Japanese Monkey (Macaca fuscata) over the First 15 Months after the Fukushima Daiichi Nuclear Disaster

机译：福岛第一核灾难后头15个月野生日本猴（猕猴）中的放射性铯浓度

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摘要

Following the massive earthquake that struck eastern Japan on March 11, 2011, a nuclear reactor core meltdown occurred at the Fukushima Daiichi Nuclear Power Plant, operated by Tokyo Electric Power Company, and was followed by the release of large amounts of radioactive materials. The objective of this study was to measure the concentration of radiocesium 134Cs and 137Cs in the muscle of Japanese monkeys (Macaca fuscata) inhabiting the forest area of Fukushima City and to determine the change in concentration over time as well as the relationship with the level of soil contamination. Cesium concentrations in the muscle of monkeys captured at locations with 100,000–300,000 Bq/m2 were 6,000–25,000 Bq/kg in April 2011 and decreased over 3 months to around 1,000 Bq/kg. However, the concentration increased again to 2,000–3,000 Bq/kg in some animals during and after December 2011 before returning to 1,000 Bq/kg in April 2012, after which it remained relatively constant. This pattern of change in muscle radiocesium concentration was similar to that of the change in radiocesium concentration in atmospheric fallout. Moreover, the monkeys feed on winter buds and the cambium layer of tree bark potentially containing higher concentrations of radiocesium than that in the diet during the rest of the year. The muscle radiocesium concentration in the monkeys related significantly with the level of soil contamination at the capture locations.
机译：2011年3月11日，日本东部发生大地震后，东京电力公司运营的福岛第一核电站发生了核反应堆堆芯熔化，随后释放出大量放射性物质。这项研究的目的是测量居住在福岛市森林地区的日本猴（猕猴）肌肉中）铯 134 Cs和 137 Cs的浓度，并确定浓度随时间的变化以及与土壤污染水平的关系。 2011年4月，在100,000–300,000 Bq / m 2 位置捕获的猴子的肌肉中铯的浓度为6,000–25,000 Bq / kg，并在3个月内下降到1,000 Bq / kg左右。然而，在2011年12月期间和之后，某些动物体内的浓度再次升高至2,000–3,000 Bq / kg，然后在2012年4月恢复至1,000 Bq / kg，此后保持相对稳定。肌肉放射性铯浓度的这种变化模式与大气尘埃中放射性铯浓度的变化模式相似。此外，猴子以冬芽为食，树皮形成层的碳potentially含量可能高于一年中其余饮食中的ces含量。猴子的肌肉放射性铯浓度与捕获地点的土壤污染水平显着相关。

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