Accurate lithium isotopic analysis of twenty geological reference materials by multi-collector inductively coupled plasma mass spectrometry
文献类型：期刊论文
| 作者 | Li, Xiaoqiang1; Han, Guilin1; Zhang, Qian2; Qu, Rui1; Miao, Zhuang3 |
| 刊名 | SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 188页码:8 |
| 关键词 | Li isotopes K isotopes Dual-column Reference materials MC-ICP-MS |
| ISSN号 | 0584-8547 |
| DOI | 10.1016/j.sab.2021.106348 |
| 通讯作者 | Han, Guilin(hanguilin@cugb.edu.cn) |
| 英文摘要 | The lithium (Li) isotopes can be used to track the evolution of continental silicate weathering, which has an important role in maintaining Earth's long-term climate stability. At present, complex separation procedures and analytical mass bias restrict the accurate determination of Li isotopic compositions in various geological samples with different Li concentrations and matrix/Li ratios. Here, an optimization of dual-column chromatography achieves high Li recovery, low procedural blank, and low Na/Li ratio (< 1) after purification, allowing the acquisition of high precision Li isotope ratios by a Nu Plasma 3 multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). In order to evaluate the accuracy of new method, the 87Li values of BHVO-2, BCR-2, AGV-2, JG-2, RGM-2, SGR-1b, GSR-6, GSR-12, and seawater, are repeatedly analyzed more than 3 times each and are consistent with the published data within the uncertainty. The long-term external reproducibility of 87Li based on L-SVEC and IRMM-016 pure solutions is about +/- 0.2%0 (2SD), and is suitable for analysis of geological samples. These results suggest that new dual-column method is reproducible and reliable. We also report ten new reference materials including two USGS rocks (SDC-1: 1.8 +/- 0.4%0; W-2a: 2.9 +/- 0.3%0), four soils (GSS-3: 1.3 +/- 0.2%0; GSS-4: -5.1 +/- 0.4%0; GSS-6: -1.9 +/- 0.3%0; GSS-8: 0.4 +/- 0.3%0), and four stream sediments (GSD-6: -1.0 +/- 0.4%0; GSD-11: 1.1 +/- 0.3%0; GSD-12: 1.8 +/- 0.2%0; GSD-14: 1.6 +/- 0.4%0), all previously analyzed for K isotopes. There is significantly fractionation of Li and K isotopes during silicate weathering. Compared to the K isotopes, Li isotopes have more promising as an isotope tool for weathering due to its larger fractionation and its abiotic property. |
| WOS关键词 | MC-ICP-MS ; LI ISOTOPES ; WEATHERING PROCESSES ; CONTINENTAL-CRUST ; FRACTIONATION ; PRECISE ; SEPARATION ; BEHAVIOR ; SAMPLES ; ROCK |
| 资助项目 | National Natural Science Foundation of China[41661144029] ; National Natural Science Foundation of China[41325010] |
| WOS研究方向 | Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000792034900002 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/176636]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Han, Guilin |
| 作者单位 | 1.China Univ Geosci Beijing, Inst Earth Sci, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiaoqiang,Han, Guilin,Zhang, Qian,et al. Accurate lithium isotopic analysis of twenty geological reference materials by multi-collector inductively coupled plasma mass spectrometry[J]. SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY,2022,188:8. |
| APA | Li, Xiaoqiang,Han, Guilin,Zhang, Qian,Qu, Rui,&Miao, Zhuang.(2022).Accurate lithium isotopic analysis of twenty geological reference materials by multi-collector inductively coupled plasma mass spectrometry.SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY,188,8. |
| MLA | Li, Xiaoqiang,et al."Accurate lithium isotopic analysis of twenty geological reference materials by multi-collector inductively coupled plasma mass spectrometry".SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY 188(2022):8. |
入库方式： OAI收割
来源：地理科学与资源研究所
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