Raman spectroscopic characterization of the CO2-N2 gaseous system at 24–300°C and 2–40 MPa and applications
Raman spectroscopic characterization of the CO2-N2 gaseous system at 24–300°C and 2–40 MPa and applications
复制标题
24–300°C、2–40 MPa 下 CO2-N2 气态体系的拉曼光谱表征及应用
DOI：
10.1080/08957959.2023.2281953
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发表时间：
2023
影响因子：
2
通讯作者：
I
中科院分区：
文献类型：
--
作者：
Haiyan Zhang;I
摘要CO2和N2是深源地质流体的重要气体组分。为了建立研究这些流体的定量方法，我们使用高压光学池、加热-冷却台和激光拉曼光谱仪在24-300°C和2-40 MPa下检测纯CO2和N2气体以及9种CO2-N2气体混合物。 结果表明，CO2费米二分体分裂和N2的ν1带与CO2的上带的峰面积比分别被认为是确定压力和组分的最佳方法。通过对N2-CO2-H2O流体包裹体中CN 2/CCO 2摩尔比的测定，验证了本研究建立的CN 2/CCO 2摩尔比的定量拉曼分析方法。该方法还用于东海石英中天然流体包裹体的分析，测定了CN2/CCO 2摩尔比和压力。
ABSTRACT CO2 and N2 are important gas components of deep-sourced geological fluids. To establish a quantitative method for the study of these fluids, we used a high-pressure optical cell, a heating–cooling stage, and a laser Raman spectrometer to examine pure CO2 and N2 gases and nine CO2-N2 gaseous mixtures at 24–300°C and 2–40 MPa. The results show that the CO2 Fermi diad split and the peak area ratios of the ν1 band of N2 to the upper band of CO2 are considered to be the best for determining pressure and composition, respectively. The quantitative Raman analysis method developed in this study for the determination of the CN2/CCO2 molar ratio was verified by measuring those in synthetic N2-CO2-H2O fluid inclusions. The developed method has also been applied to the analysis of natural fluid inclusions in quartz from Donghai for the determination of both the CN2/CCO2 molar ratio and pressure.
影响因子：
3.5
作者：
H. Ohyama;T. Tsunogae;M. Santosh
通讯作者：
H. Ohyama;T. Tsunogae;M. Santosh