| 激光拉曼光谱技术在获取流体包裹体内压中的应用及讨论 |
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| 引用本文：陈勇,周瑶琪,颜世永,刘超英,王强.2006.激光拉曼光谱技术在获取流体包裹体内压中的应用及讨论[J].地球学报,27(1):69-73. |
| DOI：10.3975/cagsb.2006.01.10 |
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| 基金项目:石油大学研究生院创新基金项目(编号:B2004-05) |
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| 中文摘要:本文详细介绍了二氧化碳、甲烷、氮气及其混合物拉曼位移与压力的关系。对实验数据进行拟合发现,不管是纯组分还是混合体系中,气体的拉曼位移基本上是随压力增加呈一级指数递减。在混合体系中,压力对拉曼位移的影响最大,含量次之。氮气与甲烷混合由于分子相互作用发生变化,结果使得氮气拉曼位移随压力变化的灵敏度增加,而甲烷的灵敏度却是降低。随压力增加,峰面积、峰半高宽、峰高等参数也将随之变化。实际的应用结果表明,激光拉曼光谱技术是一种获取复杂体系流体包裹体内压的新方法。 |
| 中文关键词:拉曼光谱 流体包裹体 内压 |
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| The Application of Laser Raman Spectroscopy to Obtaining Internal Pressure of Fluid Inclusions |
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| Abstract:The relationship between the Raman shift and the pressure of CO_2, CH_4, N_2, and their mixtures is described in this paper. The fitting of the experimental data shows that all Raman shifts decrease by one order exponential with increasing pressure, no matter the material is pure gas or mixtures. The pressure exerts a much more effect on Raman shifts than the content. Raman shifts of N_2 become more sensitive to pressure because of mixing with methane. However, things are just opposite for methane. Such a phenomenon can be explained by molecular interaction. Peak area, peak width, and peak height all change with increasing pressure. The practical applications indicate that the laser Raman spectroscopy is a new means for obtaining the internal pressure of fluid inclusions with complex systems. |
| keywords:Raman spectroscopy fluid inclusion internal pressure |
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