Determination of ultra-low level I-129 in vegetation using pyrolysis for iodine separation and accelerator mass spectrometry measurements | |
Hou, Xiaolin1,2; Wang, Yanyun1,3 | |
2016-06-01 | |
发表期刊 | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY |
ISSN | 0267-9477 |
卷号 | 31期号:6页码:1298-1310 |
文章类型 | Article |
摘要 | Radioactive isotopes of iodine are the most common radiological toxins from nuclear accidents due to their high release and high enrichment in human thyroid. Among the radioactive isotopes, long-lived 1291 can not only be used for the estimation of the radioactive risk of short-lived radioactive isotopes of iodine to humans and ecosystems, but also for the investigation of the biogeochemical cycle and environmental behavior of iodine. Accurate determination of I-129 in various environmental and biological samples is the key issue for these purposes. Due to its beta decay, low specific activity and ultra-low concentration in normal environmental and biological samples, it is important to efficiently separate iodine from the sample matrix and sensitively measure I-129. However, the complicated chemical properties of iodine and high organic content in biological samples make efficient separation of iodine very difficult using conventional acid digestion and alkaline ashing methods. By optimizing the key parameters related to the separation of iodine by pyrolysis using a tube furnace, including carbonization temperature, heating protocol, combustion assisting gas, iodine volatilization process and iodine trapping, a safe, robust and reliable pyrolysis method was established for the separation of trace amounts of iodine from biological samples with a recovery of more than 80%. By further separation of iodine, preparation of sample targets, and measurement of I-129 using AMS, a highly efficient and sensitive method for the determination of ultra low level I-129 in biological samples was developed. With this method, a detection limit of 6 x 10(-17) g g(-1) (or 0.4 nBq g(-1)) for I-129 was obtained. Compared with conventional methods, this method is easy to operate, provides highly efficient recovery of iodine, and has simple processing and less cross contamination. 5 different species of vegetation were analyzed using both the developed method and the conventional alkaline ashing method for sample decomposition, and the results agree very well with each other. The method has been successfully used for the determination of I-129 in a large number of vegetation samples. |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
DOI | 10.1039/c6ja00029k |
关键词[WOS] | NEUTRON-ACTIVATION ANALYSIS ; ENVIRONMENTAL MATERIALS ; TIME-SERIES ; SAMPLES ; SEAWATER ; SPECIATION ; TRACER ; I-129/I-127 ; CHINA ; SEA |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Chemistry ; Spectroscopy |
WOS类目 | Chemistry, Analytical ; Spectroscopy |
WOS记录号 | WOS:000378582900017 |
出版者 | ROYAL SOC CHEMISTRY |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/15653 |
专题 | 加速器质谱中心 |
通讯作者 | Hou, Xiaolin |
作者单位 | 1.Chinese Acad Sci, Xian AMS Ctr, Shaanxi Key Lab Accelerator Mass Spectrometry Tec, SKLLQG,Inst Earth Environm, Xian 710061, Peoples R China 2.Tech Univ Denmark, Ctr Nucl Technol, DK-4000 Roskilde, Denmark 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Hou, Xiaolin,Wang, Yanyun. Determination of ultra-low level I-129 in vegetation using pyrolysis for iodine separation and accelerator mass spectrometry measurements[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2016,31(6):1298-1310. |
APA | Hou, Xiaolin,&Wang, Yanyun.(2016).Determination of ultra-low level I-129 in vegetation using pyrolysis for iodine separation and accelerator mass spectrometry measurements.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,31(6),1298-1310. |
MLA | Hou, Xiaolin,et al."Determination of ultra-low level I-129 in vegetation using pyrolysis for iodine separation and accelerator mass spectrometry measurements".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 31.6(2016):1298-1310. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Hou, Xiaolin]的文章 |
[Wang, Yanyun]的文章 |
百度学术 |
百度学术中相似的文章 |
[Hou, Xiaolin]的文章 |
[Wang, Yanyun]的文章 |
必应学术 |
必应学术中相似的文章 |
[Hou, Xiaolin]的文章 |
[Wang, Yanyun]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论