Experimental investigation of improved tolerance for concentration mismatch in potassium isotope analysis on a hexapole collision cell MC-ICP-MS (Nu Sapphire)
文献类型：期刊论文
| 作者 | Li, Wenjun3; Zhao, Ye1; Su, Benxun2,3; Gao, Bingyu3; Wang, Jing3 ; Liu, Shanke3
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| 刊名 | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
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| 出版日期 | 2023-01-23 |
| 页码 | 6 |
| ISSN号 | 0267-9477 |
| DOI | 10.1039/d3ja00022b |
| 英文摘要 | Collision cell multi-collector inductively coupled plasma mass spectrometry (CC-MC-ICP-MS) has made routine high precision potassium (K) isotope analysis possible using sample-standard bracketing. However, as reported in previous studies, strict concentration match between a sample and bracketing standard (<2% tolerance reported from most labs worldwide) is often required to avoid analytical bias. This small tolerance for concentration mismatch would naturally lead to low analytical efficiency. To better characterize and potentially improve this, we conducted a series of experiments on the hexapole parameters of the Nu Sapphire CC-MC-ICP-MS. The results reveal that RF Ref. (the voltage of the RF alternating current applied to the hexapole rods) is the primary parameter that controls the concentration mismatch effect. For a set RF Bias Ref. value (the potential for the hexapole) of -0.8 V, the optimal RF Ref. value of 1.05 V identified by the flattest part in the K-41/K-39 ratio versus RF Ref. plot has increased the tolerance for K concentration mismatch to 30% from 4% at a RF Ref. of 1.5 V. The cell gas flow rate is another important parameter and optimal values of 2 sccm and 5 sccm are recommended for He and H-2, respectively. A much higher tolerance for concentration mismatch using optimized parameters has greatly improved the efficiency of high precision K isotope analyses using CC-MC-ICP-MS and will open the possibility for in situ K isotopic measurements. |
| WOS关键词 | PRECISE |
| 资助项目 | Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences[TEC 202103] ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| WOS研究方向 | Chemistry ; Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000922517500001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106824]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Li, Wenjun |
| 作者单位 | 1.Nu Instruments, Unit 74,Clywedog Rd South Wrexham Ind Estate, Wrexham LL13 9XS, Wales 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wenjun,Zhao, Ye,Su, Benxun,et al. Experimental investigation of improved tolerance for concentration mismatch in potassium isotope analysis on a hexapole collision cell MC-ICP-MS (Nu Sapphire)[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2023:6. |
| APA | Li, Wenjun,Zhao, Ye,Su, Benxun,Gao, Bingyu,Wang, Jing,&Liu, Shanke.(2023).Experimental investigation of improved tolerance for concentration mismatch in potassium isotope analysis on a hexapole collision cell MC-ICP-MS (Nu Sapphire).JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,6. |
| MLA | Li, Wenjun,et al."Experimental investigation of improved tolerance for concentration mismatch in potassium isotope analysis on a hexapole collision cell MC-ICP-MS (Nu Sapphire)".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY (2023):6. |
入库方式： OAI收割
来源：地质与地球物理研究所
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