High intermediate precision Sm isotope measurements in geological samples by MC-ICP-MS
文献类型：期刊论文
| 作者 | Bai, Jiang-Hao1,3,4; Lin, Mang4; Zhong, Song-Xiong2; Deng, Yi-Nan3; Zhang, Le4; Luo, Kai1,4; Wu, Hao1,4; Ma, Jin-Long4; Wei, Gang-Jian4 |
| 刊名 | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
 |
| 出版日期 | 2023 |
| 卷号 | 38期号:3页码:629-637 |
| 关键词 | RARE-EARTH-ELEMENTS TODGA RESIN COLUMN HALF-LIFE SEPARATION NEODYMIUM ND FRACTIONATION EXTRACTION RATIO EVOLUTION |
| ISSN号 | 0267-9477 |
| DOI | 10.1039/d2ja00412g |
| 英文摘要 | The measurement of Sm isotopes in geological materials is challenging, thus limiting their extensive applications in geoscience and environmental science. Herein, we developed a technique for the high intermediate precision analysis of Sm isotopes via multi-collector-inductively coupled plasma-mass spectrometry (MC-ICP-MS). Interference impurities, particularly Nd, Eu, and Gd, were completely removed from Sm using a new two-column [AG50W-X12 (200-400 mesh) and TODGA (50-100 μm)] procedure, which quantitatively (99.4 ± 0.3%) extracted Sm. The complete purification of Sm allowed the development of a high intermediate precision calibration method combined with standard-sample bracketing and Eu internal normalization to correct the instrumental mass bias. A long-term intermediate precision better than 0.04‰ (2SD) for δ152/149Sm was obtained. This intermediate precision is significantly better than those of the existing MC-ICP-MS methods (0.15‰-0.30‰) and double spike-thermal ionization mass spectrometry methods (0.15‰-0.20‰), as confirmed by multiple purifications and measurements of 11 geological reference materials (GRMs) with different rock types (e.g., basalt, andesite, granodiorite, granite, nepheline, syenite, manganese nodule, and marine sediment). In addition, we observed a detectable variation in δ152/149Sm (0.22‰) among these 11 GRMs, which could not be identified at the previous intermediate precision. This finding highlights that the high intermediate precision δ152/149Sm measurements in natural samples established herein have the potential to provide new constraints on diverse natural processes, ranging from planetary formation to chemical weathering and ocean circulation and create new opportunities for stable Sm isotope studies. ? 2023 The Royal Society of Chemistry. |
| WOS研究方向 | Chemistry, Analytical ; Spectroscopy |
| 语种 | 英语 |
| WOS记录号 | WOS:000929896200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80282]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing; 100049, China 2.National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangdong, Guangzhou; 510650, China 3.Key Laboratory of Marine Mineral Resources, Ministry of Natural and Resources, Guangzhou; 511458, China 4.State Key Laboratory of Isotope Geochemistry, CAS Center for Excellence in Deep Earth Science, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China |
| 推荐引用方式 GB/T 7714 | Bai, Jiang-Hao,Lin, Mang,Zhong, Song-Xiong,et al. High intermediate precision Sm isotope measurements in geological samples by MC-ICP-MS[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2023,38(3):629-637. |
| APA | Bai, Jiang-Hao.,Lin, Mang.,Zhong, Song-Xiong.,Deng, Yi-Nan.,Zhang, Le.,...&Wei, Gang-Jian.(2023).High intermediate precision Sm isotope measurements in geological samples by MC-ICP-MS.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,38(3),629-637. |
| MLA | Bai, Jiang-Hao,et al."High intermediate precision Sm isotope measurements in geological samples by MC-ICP-MS".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 38.3(2023):629-637. |
入库方式： OAI收割
来源：广州地球化学研究所
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