Isotopic evidence of plutonium release into the environment from the Fukushima DNPP accident

被引：250

作者：

Zheng, Jian ^{[1
]}

Tagami, Keiko ^{[1
]}

Watanabe, Yoshito ^{[1
]}

Uchida, Shigeo ^{[1
]}

Aono, Tatsuo ^{[1
]}

Ishii, Nobuyoshi ^{[1
]}

Yoshida, Satoshi ^{[1
]}

Kubota, Yoshihisa ^{[1
]}

Fuma, Shoichi ^{[1
]}

Ihara, Sadao ^{[2
]}

机构：

[1] Natl Inst Radiol Sci, Res Ctr Radiat Protect, Inage Ku, Chiba 2638555, Japan

[2] Ohu Univ, Dept Biol, Fukushima, Japan

来源：

SCIENTIFIC REPORTS | 2012年 / 2卷

关键词：

NUCLEAR-POWER-PLANT; GLOBAL FALLOUT; PU ISOTOPES; RATIOS; SOILS;

D O I：

10.1038/srep00304

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The Fukushima Daiichi nuclear power plant (DNPP) accident caused massive releases of radioactivity into the environment. The released highly volatile fission products, such as Te-129m, I-131, Cs-134, Cs-136 and Cs-137 were found to be widely distributed in Fukushima and its adjacent prefectures in eastern Japan. However, the release of non-volatile actinides, in particular, Pu isotopes remains uncertain almost one year after the accident. Here we report the isotopic evidence for the release of Pu into the atmosphere and deposition on the ground in northwest and south of the Fukushima DNPP in the 20-30 km zones. The high activity ratio of Pu-241/Pu239+240 (> 100) from the Fukushima DNPP accident highlights the need for long-term Pu-241 dose assessment, and the ingrowth of Am-241. The results are important for the estimation of reactor damage and have significant implication in the strategy of decontamination.

引用

页数：8

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