Measurements of lithium isotopic compositions in coal using MC-ICP-MS | |
Mao-Yong He; Chong-guang Luo; Hai Lu; Zhang dong Jin; Li Deng | |
2019 | |
Source Publication | Journal of Analytical Atomic Spectrometry
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Pages | 1-6 |
Abstract | Lithium is a very important metal for energy production. Lithium isotopes can be used to trace the source of fossil fuels that contribute to atmospheric haze and examine the occurrence and concentration of lithium in coal deposits. In this study, a microwave digestion method for coal decomposition using HNO3 + HF and H3BO3 acid systems was evaluated. The results demonstrated that coal was completely decomposed when these acids were used and the microwave program run in two steps. Three coal reference materials with different lithium concentrations (SARM18, SARM19 and SARM20) and four samples of Li-bearing coal from the Guanbanwusu Mine (China) were analyzed and the lithium isotopic composition was determined using MC-ICP-MS. Li isotope data were obtained with an intermediate precision better than ±0.30‰. The δ7Li values determined for SARM18, SARM19 and SARM20 were 1.35 ± 0.23‰, 2.16 ± 0.27‰ and 1.48 ± 0.17‰, respectively. The non-certified coal samples revealed a similar range in lithium isotopes (δ7Li = 6.02‰ to 6.77‰) suggesting limited lithium isotope fractionation in coal locally, which could be useful for tracing atmospheric haze and contaminated waters in the environment. The comprehensive data and procedures in this study can be considered as a reference for conducting Li isotope determination in coal. |
Indexed By | SCI |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/10519 |
Collection | 矿床地球化学国家重点实验室 |
Affiliation | 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China 2.CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, China 3.Isotope Laboratory, Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA 4.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 5.Division of Chemical Metrology & Analytical Science, National Institute of Metrology, Beijing 10013, China 6.Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi'an 710061, China |
Recommended Citation GB/T 7714 | Mao-Yong He;Chong-guang Luo;Hai Lu;Zhang dong Jin;Li Deng. Measurements of lithium isotopic compositions in coal using MC-ICP-MS[J]. Journal of Analytical Atomic Spectrometry,2019:1-6. |
APA | Mao-Yong He;Chong-guang Luo;Hai Lu;Zhang dong Jin;Li Deng.(2019).Measurements of lithium isotopic compositions in coal using MC-ICP-MS.Journal of Analytical Atomic Spectrometry,1-6. |
MLA | Mao-Yong He;Chong-guang Luo;Hai Lu;Zhang dong Jin;Li Deng."Measurements of lithium isotopic compositions in coal using MC-ICP-MS".Journal of Analytical Atomic Spectrometry (2019):1-6. |
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