Determination of I-129 in aerosols using pyrolysis and AgI-AgCl coprecipitation separation and accelerator mass spectrometry measurements
文献类型：期刊论文
| 作者 | Zhang, Luyuan1,2,4; Hou, Xiaolin1,2,3,4; Fu, Yunchong1,4 ; Fang, Miao1,4; Chen, Ning1,4
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| 刊名 | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
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| 出版日期 | 2018-10-01 |
| 卷号 | 33期号:10页码:1729-1736 |
| ISSN号 | 0267-9477 |
| DOI | 10.1039/c8ja00248g |
| 通讯作者 | Zhang, Luyuan(zhangly@ieecas.cn) |
| 英文摘要 | Airborne radioactive iodine is a key concern for the transport and dispersion of radioactive contamination and radiation exposure evaluation during nuclear accidents and nuclear emergency preparedness. Information about long-lived I-129 in aerosols is vital for the reconstruction of the level and distribution of short-lived and highly radiotoxic I-131, as well as for understanding the atmospheric cycling of iodine. However, aerosol I-129 concentration is difficult to measure due to its low concentration in remote areas, away from nuclear pollution sources. In this study, a novel method for the determination of I-129 in aerosols collected on a glass fiber filter was developed using high-temperature pyrolysis and AgI-AgCl coprecipitation for separation coupled with highly sensitive accelerator mass spectrometry (AMS) measurements. It is worth noting that even though the pyrolysis behaviors of various iodine species were investigated and found to be different, all of the iodine can be quantitatively recovered. Iodate was released from the aerosols through its decomposition to iodine at temperatures over 500 degrees C. The chemical yield of iodine during pyrolysis was 81.5 +/- 5.8%. The detection limit for I-129 in the aerosol samples was 1.3 x 10(4) atoms per m(3), at least reducing the required aerosol sample size by a factor of three, in contrast to the method using alkaline-ashing separation coupled to solvent extraction. For aerosol samples collected in Asia with I-129/I-127 ratios of (0.1-10) x 10(-9), a volume of 1000 m(3) air is sufficient for the determination of I-129. The developed method was used to analyse aerosol samples collected in Xi'an, an inland Chinese city. It is observed that I-129 concentrations ranged within (0.38-5.19) x 10(5) atoms per m(3), with I-129/I-127 ratios of (21.7-252) x 10(-10), which are comparable to those collected in Japan before the Fukushima nuclear accident and Spain, while much lower than those observed in Northern Europe. |
| WOS关键词 | FUKUSHIMA NUCLEAR ACCIDENT ; CARRIER-FREE IODINE ; POWER-PLANT ; SAMPLES ; SPECIATION ; ISOTOPES ; SOIL ; I-129/I-127 ; TSUKUBA ; RATIOS |
| 资助项目 | National Natural Science Foundation of China[11605207] ; National Natural Science Foundation of China[91643206] ; Technology Foundation for Selected Overseas Chinese Scholars ; Department of Human Resources and Social Security of Shaanxi Province, China ; Ministry of Science and Technology of China[2015FY110800] |
| WOS研究方向 | Chemistry ; Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000448340200014 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Natural Science Foundation of China ; Technology Foundation for Selected Overseas Chinese Scholars ; Department of Human Resources and Social Security of Shaanxi Province, China ; Ministry of Science and Technology of China |
| 源URL | [http://ir.ieecas.cn/handle/361006/14639]  |
| 专题 | 地球环境研究所_加速器质谱中心 |
| 通讯作者 | Zhang, Luyuan |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Xian AMS Ctr, Shaanxi Key Lab Accelerator Mass Spectrometry & A, Xian 710061, Shaanxi, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Peoples R China 3.Tech Univ Denmark, Ctr Nucl Technol, Riso Campus, DK-4000 Roskilde, Denmark 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Luyuan,Hou, Xiaolin,Fu, Yunchong,et al. Determination of I-129 in aerosols using pyrolysis and AgI-AgCl coprecipitation separation and accelerator mass spectrometry measurements[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2018,33(10):1729-1736. |
| APA | Zhang, Luyuan,Hou, Xiaolin,Fu, Yunchong,Fang, Miao,&Chen, Ning.(2018).Determination of I-129 in aerosols using pyrolysis and AgI-AgCl coprecipitation separation and accelerator mass spectrometry measurements.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,33(10),1729-1736. |
| MLA | Zhang, Luyuan,et al."Determination of I-129 in aerosols using pyrolysis and AgI-AgCl coprecipitation separation and accelerator mass spectrometry measurements".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 33.10(2018):1729-1736. |
入库方式： OAI收割
来源：地球环境研究所
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