福島県における環境及び人への健康への影響の指標となる人工放射性物質に関する研究

福岛县人工放射性物质作为其对环境和人类健康影响指标的研究

• 批准号: 15F14801
• 负责人: サフー・サラタ クマール
• 金额: $ 1.47万
• 依托单位: National Institutes for Quantum and Radiological Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2015
• 资助国家: 日本
• 起止时间: 2015-04-24 至 2017-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15F14801/
• 关键词: Plutonium; Fukushima; Soil; radiochemical methods; alpha spectrometry; mass spectrometry

The main goal of our study that was connected with detection of Pu and other actinides isotopes, all samples were subjected to gamma spectrometry measurements for radiocaesium activity. We could measure 134Cs as well as elevated level of 137Cs; the obvious signature of the FDDNP accident. The activity concentration of 137Cs ranged between 0.460 ± 0.029 kBq kg-1 and 113.2 ± 7.4 kBq kg-1 for the reference date 11 March 2011 whereas the activity ratio 134Cs/137Cs was close to 1.The activity concentration of 239+240Pu in samples ranged between <0.006 Bq kg-1 and 0.216 Bq kg-1 with an average value of 0.052 Bq kg-1. We could notice 238Pu only in three samples and the values were usually close to MDC (0.005 Bq kg-1). The activity ratios of 238Pu/239+240Pu in two samples coincided with global fallout and were comparable with reported value.

我们研究的主要目标是探测钚和其他锕系元素同位素，所有样品都进行了放射性铯活度的伽马光谱测量。我们可以测量134 Cs以及137 Cs的升高水平; FDDNP事故的明显标志。参考日期2011年3月11日，137 Cs的活度浓度范围为0.460 ± 0.029 kBq kg-1和113.2 ± 7.4 kBq kg-1，而134 Cs/137 Cs的活度比接近1。样品中239+ 240 Pu的活度浓度范围为<0.006 Bq kg-1和0.216 Bq kg-1。1，平均值为0.052 Bq kg-1。 仅在三个样品中观察到~（238）Pu，其值通常接近MDC（0.005 Bq kg ~（-1））。两个样品的238 Pu/239+ 240 Pu活度比与全球沉降相吻合，与文献报道值相当。

项目成果

Determination of Pu isotopes in soil samples affected by FDNPP accident

受 FDNPP 事故影响的土壤样品中 Pu 同位素的测定

• 发表时间: 2016
• 作者: R. Kierepko;H. Arae;A. Sorimachi; S.K. Sahoo
• 通讯作者: S.K. Sahoo

Transuranic elements in soil samples from Fukushima Prefecture collected in March 2011

2011 年 3 月采集的福岛县土壤样本中的超铀元素

• 发表时间: 2016
• 作者: R. Kierepko; S.K. Sahoo
• 通讯作者: S.K. Sahoo

Gamma emitters in atmospheric precipitation in Krakow (Southern Poland) during the years 2005-2015

• DOI: 10.1016/j.jenvrad.2016.02.010
• 发表时间: 2017-01-01
• 期刊: JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
• 影响因子: 2.3
• 作者: Mietelski, Jerzy W.;Nalichowska, Ewa;Kierepko, Renata
• 通讯作者: Kierepko, Renata

Natural radioactivity level and elemental composition of soil samples from a high background radiation area on Eastern Coast of India (Odisha)

印度东海岸（奥里萨邦）高本底辐射区土壤样品的自然放射性水平和元素组成

• DOI: 10.1093/rpd/ncw052
• 发表时间: 2016
• 期刊: Radiation Protection Dosimetry
• 影响因子: 1
• 作者: S.K. Sahoo;R. Kierepko;A. Sorimachi;Y. Omori;T. Ishikawa;S. Tokonami;G. S. Gusain and R.C. Ramola
• 通讯作者: G. S. Gusain and R.C. Ramola

Traces of Pu isotopes originated from burnt-up fuel in Fukushima exclusion zone

来自福岛禁区燃尽燃料的钚​​同位素痕迹

• 发表时间: 2016
• 作者: R. Kierepko;A. Sorimachi;S. Tokonami and S.K. Sahoo
• 通讯作者: S. Tokonami and S.K. Sahoo