Study on the Raman Spectra of Natural Fluid Inclusions Under Uniform State
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摘要: 以天然流体包裹体为研究对象，将激光拉曼光谱和冷热台这2种测试手段很好的结合起来，进行均一状态下流体包裹体的拉曼光谱研究，对了解捕获高温高压下古流体性质，认识地球内部物质的相平衡、矿物的溶解、沉淀和迁移以及深部岩石熔融作用等具有重要参考意义。采用激光拉曼光谱探针与显微热台相联用原位在线测试技术，对石英脉中不同期次和不同相态的流体包裹体成分定性定量测定，得到常温和均一状态下的拉曼图谱，结合特征峰面积、强度及半高宽计算并对比分析包裹体挥发组分的组成发生的变化，及H2O-CO2、H2O-CH4、H2O-CO2-CH4混合流体的特性，重点讨论了高温均一状态下2种流体相（气态、液态）中非极性分子（CO2、CH4）对水分子氢键的影响。Abstract: This paper studies the Raman spectra of the fluid inclusions under uniform state with natural fluid inclusions as the research object, combining the two testing methods of laser Raman spectra and the heating-and-freezing stage. It has important references for finding the ancient fluid properties under high temperature and pressure, knowing the phase equilibrium of the earth interior material, the mineral dissolution, precipitation, and migration, and the function of deep rock melting. The high temperature characteristics of H2O-CO2, H2O-CH4 and H2O-CO2-CH4 mixed fluids were analyzed in situ by using laser Raman spectroscopic probe combined with a micro-thermal platform. The influence of the non-polar molecules (CO2, CH4) on the hydrogen bond water molecules at high temperature uniform state was mainly discussed.
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Key words:
- Raman spectra /
- fluid inclusions /
- uniform state /
- hydrogen bond of fluid water molecules
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