高温下合成包裹体中流体水分子氢键的拉曼光谱分析

Raman Spectroscopic Study on Hydrogen Bond of Water Molecules in Synthetic Inclusions Under High Temperature

在合成包裹体腔中 ,用显微激光拉曼探针原位分析了高温下纯水和含气体CO2 的流体中水分子的氢键作用。研究结果表明 ,随着温度升高 ,流体中水分子的氢键作用不断减弱 ,但纯水在最高的测量温度 40 0℃ ,含CO2 的流体在 5 2 0℃都还存在着比较强的氢键作用。含CO2的流体比相同温度下纯水的氢键作用弱 ,并且当气相与液相混溶成为纯液相后 ,它的氢键与温度的关系明显出现了转折 。

The hydrogen bonding of pure water and CO 2 containing water in synthetic fluid inclusions under high temperature was studied by in sute analysis with a laser Raman microprobe. The results show that the hydrogen bonding of water becomes weaker and weaker with the increase of temperature. The hydrogen bonding of water in pure water at 400℃ and the fluid with 4.04 wt% CO 2 at 520℃ still remain relatively strong, and the hydrogen bonding of water in fluid with CO 2 is weaker than that in pure water at same temperature. Furthermore, when it becomes a homogeneous liquid fluid, the hydrogen bonding is less sensitive to temperature than that in two phase fluid.