In situ redox control and Raman spectroscopic characterisation of solutions below 300 degrees C
文献类型：期刊论文
| 作者 | Chou, I. -M.1; Wang, R.1,2 ; Fang, J.1,3
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| 刊名 | GEOCHEMICAL PERSPECTIVES LETTERS
 |
| 出版日期 | 2021-12-02 |
| 卷号 | 20页码:19 |
| ISSN号 | 2410-339X |
| DOI | 10.7185/geochemlet.2135 |
| 通讯作者 | Chou, I. -M.(imchou@idsse.ac.cn) |
| 英文摘要 | Redox reactions often occur and significantly affect many geological processes. To simulate redox reactions in low temperature (T < 400 degrees C) hydrothermal experiments, fused silica was used as a hydrogen membrane to impose an externally fixed H-2 pressure (P-H2) on a fused silica capillary capsule (FSCC; 150 mu m inner diameter, 375 mu m outer diameter and similar to 6 mm long) to define the redox state of the sample in the FSCC. At 300 degrees C, it required less than 7 hours to reach osmotic equilibrium. In this study, a constant PH2 was imposed on an FSCC, which originally contained a 0.5 m (mole/kg H2O) SnCl4 + 0.5 m HCl aqueous solution, at 300 degrees C and vapour saturation pressure. In situ Raman spectra of the sample solution collected at 300 degrees C show that the reduction rate of Sn-IV to Sn-II species increased substantially with an increase of 1.1 bar of P-H2. We characterised precipitation and dissolution of cassiterite under various P-T-pH-P-H2 conditions and greatly increased our capabilities for performing rigorous hydrothermal experiments at temperatures below 400 degrees C, in which redox control is difficult to ensure without in situ approaches. |
| 资助项目 | Key Frontier Science Program of CAS[QYZDY-SSW-DQC008] ; National Natural Science Foundation of China[41973055] ; National Natural Science Foundation of China[4213000358] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | EUROPEAN ASSOC GEOCHEMISTRY |
| WOS记录号 | WOS:000727023200001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/177299]  |
| 专题 | 海洋研究所_深海极端环境与生命过程研究中心 |
| 通讯作者 | Chou, I. -M. |
| 作者单位 | 1.Chinese Acad Sci, Inst Deep sea Sci & Engn, CAS Key Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Hainan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chou, I. -M.,Wang, R.,Fang, J.. In situ redox control and Raman spectroscopic characterisation of solutions below 300 degrees C[J]. GEOCHEMICAL PERSPECTIVES LETTERS,2021,20:19. |
| APA | Chou, I. -M.,Wang, R.,&Fang, J..(2021).In situ redox control and Raman spectroscopic characterisation of solutions below 300 degrees C.GEOCHEMICAL PERSPECTIVES LETTERS,20,19. |
| MLA | Chou, I. -M.,et al."In situ redox control and Raman spectroscopic characterisation of solutions below 300 degrees C".GEOCHEMICAL PERSPECTIVES LETTERS 20(2021):19. |
入库方式： OAI收割
来源：海洋研究所
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