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In Situ Raman Spectral Characteristics of Carbon Dioxide in a Deep-Sea Simulator of Extreme Environments Reaching 300? and 30MPa
Li, Lianfu1,2,3,4; Du, Zengfeng1,3; Zhang, Xin1,2,3; Xi, Shichuan1,4; Wang, Bing1,4; Luan, Zhendong1,3; Lian, Chao3; Yan, Jun1
2018
发表期刊APPLIED SPECTROSCOPY
卷号72期号:1页码:48-59
文章类型Article
摘要Deep-sea carbon dioxide (CO2) plays a significant role in the global carbon cycle and directly affects the living environment of marine organisms. In situ Raman detection technology is an effective approach to study the behavior of deep-sea CO2. However, the Raman spectral characteristics of CO2 can be affected by the environment, thus restricting the phase identification and quantitative analysis of CO2. In order to study the Raman spectral characteristics of CO2 in extreme environments (up to 300? and 30MPa), which cover most regions of hydrothermal vents and cold seeps around the world, a deep-sea extreme environment simulator was developed. The Raman spectra of CO2 in different phases were obtained with Raman insertion probe (RiP) system, which was also used in in situ Raman detection in the deep sea carried by remotely operated vehicle (ROV) Faxian. The Raman frequency shifts and bandwidths of gaseous, liquid, solid, and supercritical CO2 and the CO2-H2O system were determined with the simulator. In our experiments (0-300? and 0-30MPa), the peak positions of the symmetric stretching modes of gaseous CO2, liquid CO2, and supercritical CO2 shift approximately 0.6cm(-1) (1387.8-1388.4cm(-1)), 0.7cm(-1) (1385.5-1386.2cm(-1)), and 2.5cm(-1) (1385.7-1388.2cm(-1)), and those of the bending modes shift about 1.0cm(-1) (1284.7-1285.7cm(-1)), 1.9cm(-1) (1280.1-1282.0cm(-1)), and 4.4cm(-1) (1281.0-1285.4cm(-1)), respectively. The Raman spectral characteristics of the CO2-H2O system were also studied under the same conditions. The peak positions of dissolved CO2 varied approximately 4.5cm(-1) (1282.5-1287.0cm(-1)) and 2.4cm(-1) (1274.4-1276.8cm(-1)) for each peak. In comparison with our experiment results, the phases of CO2 in extreme conditions (0-3000m and 0-300?) can be identified with the Raman spectra collected in situ. This qualitative research on CO2 can also support the further quantitative analysis of dissolved CO2 in extreme conditions.
关键词Carbon Dioxide Co2 Laser Raman In Situ Hydrothermal Vent Cold Seep
DOI10.1177/0003702817722820
收录类别SCI
语种英语
WOS记录号WOS:000418952400004
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/154307
专题海洋地质与环境重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Deep Sea Res Ctr, Qingdao, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
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Li, Lianfu,Du, Zengfeng,Zhang, Xin,et al. In Situ Raman Spectral Characteristics of Carbon Dioxide in a Deep-Sea Simulator of Extreme Environments Reaching 300? and 30MPa[J]. APPLIED SPECTROSCOPY,2018,72(1):48-59.
APA Li, Lianfu.,Du, Zengfeng.,Zhang, Xin.,Xi, Shichuan.,Wang, Bing.,...&Yan, Jun.(2018).In Situ Raman Spectral Characteristics of Carbon Dioxide in a Deep-Sea Simulator of Extreme Environments Reaching 300? and 30MPa.APPLIED SPECTROSCOPY,72(1),48-59.
MLA Li, Lianfu,et al."In Situ Raman Spectral Characteristics of Carbon Dioxide in a Deep-Sea Simulator of Extreme Environments Reaching 300? and 30MPa".APPLIED SPECTROSCOPY 72.1(2018):48-59.
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