2010年至2012年福岛第一核电站周边大气碳浓度的局部变化
Local variance of atmospheric C concentrations around Fukushima Dai-ichi Nuclear Power Plant from 2010 to 2012.
作者信息
Chen Biying, Xu Sheng, Cook Gordon T, Freeman Stewart P H T, Hou Xiaolin, Liu Cong-Qiang, Naysmith Philip, Yamaguchi Katsuhiko
机构信息
Scottish Universities Environmental Research Centre (SUERC), East Kilbride, G75 0QF UK.
Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072 China.
出版信息
J Radioanal Nucl Chem. 2017;314(2):1001-1007. doi: 10.1007/s10967-017-5459-8. Epub 2017 Sep 8.
Radiocarbon (C) has been measured in single tree ring samples collected from the southwest of the Fukushima Dai-ichi Nuclear Power Plant. Our data indicate south-westwards dispersion of radiocarbon and the highest C activity observed so far in the local environment during the 2011 accident. The abnormally high C activity in the late wood of 2011 ring may imply an unknown source of radiocarbon nearby after the accident. The influence of C shrank from 30 km during normal reactor operation to 14 km for the accident in the northwest of FDNPP, but remains unclear in the southwest.
已对从福岛第一核电站西南部采集的单棵树木年轮样本中的放射性碳（C）进行了测量。我们的数据表明，放射性碳向西南方向扩散，并且在2011年事故期间，当地环境中观测到了迄今为止最高的碳-14活度。2011年树轮晚材中异常高的碳-14活度可能意味着事故后附近存在未知的放射性碳源。在正常反应堆运行期间，碳-14的影响范围为30公里，而在福岛第一核电站西北部发生事故时，该范围缩小至14公里，但在西南部情况仍不明朗。
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