原子能科学技术Issue(10)：1899-1908,10.DOI:10.7538/yzk.2015.49.10.1899
福岛核事故向环境释放的 Pu研究进展
Plutonium Isotopes Released f rom Fukushima Daiichi Nuclear Power Plant Accident into Environment
摘要
Abstract
On March 11 , 2011 , a catastrophic tsunami induced by a magnitude 9.0 earthquake caused the terrible Fukushima Daiichi Nuclear Power Plant (FDNPP) acci‐dent ,leading to the release of a large amount of radionuclides into the environment .T he published studies on plutonium isotopes in the environment after the FDNPP accident were reviewed in this paper .The total atmospheric released amounts of Pu from the FDNPP accident were estimated to be 109 Bq ,that is only 1/10 000 of that released from the Chernobyl accident .The Pu isotopes were released from the damaged reactors ,not from the spent fuel pools in the FDNPP .The Pu isotopic ratios (240 Pu/239 Pu ,241 Pu/239 Pu) and activity ratios of A(238 Pu)/A(239+ 240 Pu) were significantly different from that of global fallout ,serving as powerful fingerprints for Pu source identification .To date , the plutonium isotopes from the accident in the terrestrial environment within the 30 km zone around the FDNPP site have been widely observed and there are no strong positive correlations between the Pu isotopes contamination levels and the distances from the FDNPP site .The influence of the FDNPP accident on Pu distributions in the marine environment is limited .No detectable Pu contamination from the accident is observed even in the near coastal (5 km off the FDNPP site) marine sediments .关键词
福岛核事故/Pu/同位素原子比Key words
FDNPP accident/plutonium/isotopic ratio分类
能源科技引用本文复制引用
倪有意,卜文庭,郭秋菊,胡丹,许宏..福岛核事故向环境释放的 Pu研究进展[J].原子能科学技术,2015,(10):1899-1908,10.基金项目
国家自然科学基金资助项目（11275015）；北京大学本科生科研项目资助 （）
