IEECAS OpenIR  > 加速器质谱中心
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
ISSN0267-9477
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
DOI10.1039/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
被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
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
所有评论 (0)
暂无评论
 

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。