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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
发表期刊SCIENCE BULLETIN
卷号62期号:4页码:277-289
文章类型Article
摘要Inductively 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.
关键词Inductively Coupled Plasma Mass Spectrometry High-pressure Digestion Oxide And hydrOxide Interferences Instrumental Drift Correction Methods Trace Elements
DOI10.1016/j.scib.2017.01.004
收录类别SCI
语种英语
WOS记录号WOS:000396758500010
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/136404
专题海洋地质与环境重点实验室
作者单位1.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
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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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