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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
Source PublicationJOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
ISSN1044-0305
Volume26Issue:5Pages:725-733
SubtypeArticle
Abstract

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.

KeywordIodine-129 Accelerator Mass Spectrometry Carrier-free Agi-agcl Target Low Level Measurement
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences ; Technology
DOI10.1007/s13361-015-1086-1
WOS KeywordFree Iodine ; Ams ; Waters ; Gas ; Systems ; Samples ; Tracer ; Fluids ; Cl-36
Indexed BySCI
Language英语
WOS Research AreaBiochemistry & Molecular Biology ; Chemistry ; Spectroscopy
WOS SubjectBiochemical Research Methods ; Chemistry, Analytical ; Chemistry, Physical ; Spectroscopy
WOS IDWOS:000352876100005
PublisherSPRINGER
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9372
Collection加速器质谱中心
Corresponding AuthorHou, Xiaolin
Affiliation1.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
Recommended Citation
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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