Accelerator Mass Spectrometry Analysis of Ultra-Low-Level I-129 in Carrier-Free AgI-AgCl Sputter Targets | |
Liu, Qi1,2; Hou, Xiaolin1,3; Zhou, Weijian1; Fu, Yunchong1 | |
2015-05-01 | |
发表期刊 | JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY |
ISSN | 1044-0305 |
卷号 | 26期号:5页码:725-733 |
文章类型 | Article |
摘要 | Separation of carrier-free iodine from low-level iodine samples and accurate measurement of ultra-low-level I-129 in microgram iodine target are essential but a bottleneck in geology and environment research using naturally produced I-129. This article presents a detection technique of accelerator mass spectrometry (AMS) for accurate determination of ultra-low-level I-129 in carrier-free AgI-AgCl sputter targets. Copper instead of aluminum was selected as the suitable sample holder material to avoid the reaction of AgI-AgCl powder with aluminum. Niobium powder was selected as thermally and electrically conductive matrix to be mixed with AgI-AgCl powder, in order to obtain and maintain a stable and high iodine ion current intensity, as well as less memory effect and low background level of I-129. The most optimal ratio of the Nb matrix to the AgI-AgCl powder was found to be 5:1 by mass. The typical current of I-127(5+) using AgI-AgCl targets with iodine content from 5 to 80 mu g was measured to be 5 to 100 nA. Four-year AMS measurements of the I-129/I-127 ratios in standards of low iodine content and the machine blanks showed a good repeatability and stability. |
关键词 | Iodine-129 Accelerator Mass Spectrometry Carrier-free Agi-agcl Target Low Level Measurement |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences ; Technology |
DOI | 10.1007/s13361-015-1086-1 |
关键词[WOS] | Free Iodine ; Ams ; Waters ; Gas ; Systems ; Samples ; Tracer ; Fluids ; Cl-36 |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry ; Spectroscopy |
WOS类目 | Biochemical Research Methods ; Chemistry, Analytical ; Chemistry, Physical ; Spectroscopy |
WOS记录号 | WOS:000352876100005 |
出版者 | SPRINGER |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9372 |
专题 | 加速器质谱中心 |
通讯作者 | Hou, Xiaolin |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian AMS Ctr, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Tech Univ Denmark, Ctr Nucl Technol, DK-4000 Roskilde, Denmark |
推荐引用方式 GB/T 7714 | Liu, Qi,Hou, Xiaolin,Zhou, Weijian,et al. Accelerator Mass Spectrometry Analysis of Ultra-Low-Level I-129 in Carrier-Free AgI-AgCl Sputter Targets[J]. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY,2015,26(5):725-733. |
APA | Liu, Qi,Hou, Xiaolin,Zhou, Weijian,&Fu, Yunchong.(2015).Accelerator Mass Spectrometry Analysis of Ultra-Low-Level I-129 in Carrier-Free AgI-AgCl Sputter Targets.JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY,26(5),725-733. |
MLA | Liu, Qi,et al."Accelerator Mass Spectrometry Analysis of Ultra-Low-Level I-129 in Carrier-Free AgI-AgCl Sputter Targets".JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 26.5(2015):725-733. |
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