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Simple and cost-effective methods for precise analysis of trace element abundances in geological materials with ICP-MS
Chen, Shuo1,2,3; Wang, Xiaohong1,2; Niu, Yaoling1,2,4; Sun, Pu1,2,3; Duan, Meng; Xiao, Yuanyuan1,2; Guo, Pengyuan1,2; Gong, Hongmei1,2; Wang, Guodong1,2; Xue, Qiqi5
2017-02-28
Source PublicationSCIENCE BULLETIN
Volume62Issue:4Pages:277-289
SubtypeArticle
AbstractInductively coupled plasma mass spectrometry (ICP-MS) is the most commonly used technique to determine the abundances of trace elements in a wide range of geological materials. However, incomplete sample digestion, isobaric interferences and instrumental drift remain obvious problems that must be overcome in order to obtain precise and accurate results. For this reason, we have done many experiments and developed a set of simple, cost-effective and practical methods widely applicable for precise and rapid determination of trace element abundances in geological materials using ICP-MS. Commonly used high-pressure digestion technique is indeed effective in decomposing refractory phases, but this inevitably produces fluoride complexes that create new problems. We demonstrate that the fluoride complexes formed during high-pressure digestion can be readily re-dissolved using high-pressure vessel at 190 degrees C for only 2 h for 50 mg sample. In the case of isobaric interferences, although oxide (e.g., MO+/M+) and hydroxide (e.g., MOH+/M+) productivity is variable between runs, the (MO+/M+)/(CeO+/Ce+) and (MOH+/M+)/(CeO+/Ce+) ratios remain constant, making isobaric interference correction for all other elements of interest straightforward, for which we provide an easy-to-use off-line procedure. We also show that mass-time-intensity drift curve is smooth as recognized previously, for which the correction can be readily done by analyzing a quality-control (QC) solution and using off-line Excel VBA procedure without internal standards. With these methods, we can produce data in reasonable agreement with recommended values of international rock reference standards with a relative error of <8% and precision generally better than 5%. Importantly, compared to the widely used analytical practice, we can effectively save >60% of time (e.g., < 24 h vs. > 60 h). (C) 2017 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
KeywordInductively Coupled Plasma Mass Spectrometry High-pressure Digestion Oxide And hydrOxide Interferences Instrumental Drift Correction Methods Trace Elements
DOI10.1016/j.scib.2017.01.004
Indexed BySCI
Language英语
WOS IDWOS:000396758500010
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136404
Collection海洋地质与环境重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England
5.China Univ Geosci, Sch Earth Sci & Mineral Resources, Beijing 100083, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Chen, Shuo,Wang, Xiaohong,Niu, Yaoling,et al. Simple and cost-effective methods for precise analysis of trace element abundances in geological materials with ICP-MS[J]. SCIENCE BULLETIN,2017,62(4):277-289.
APA Chen, Shuo.,Wang, Xiaohong.,Niu, Yaoling.,Sun, Pu.,Duan, Meng.,...&Xue, Qiqi.(2017).Simple and cost-effective methods for precise analysis of trace element abundances in geological materials with ICP-MS.SCIENCE BULLETIN,62(4),277-289.
MLA Chen, Shuo,et al."Simple and cost-effective methods for precise analysis of trace element abundances in geological materials with ICP-MS".SCIENCE BULLETIN 62.4(2017):277-289.
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