【摘要】 用金刚石压腔研究了Na2SO4溶液在温度30~400℃、压力90~2400 MPa条件下的拉曼光谱特征。结果表明:温度相同时,SO42-的对称伸缩振动随压力增大向高频方向偏移;而在压力基本相同时,随温度升高则向低频方向偏移。经过数据拟合得到了SO42-对称伸缩振动的拉曼位移与温度、压力的关系为:ρ=190.44Δυp+0.002 7t2+2.901 9t-111.68。该公式可以用来作为流体包裹体的压力计。更多还原

【Abstract】 The Raman spectroscopy of Na₂SO₄ solution was conducted in a diamond anvil cell at temperatures from 30 to（400 ℃） and pressures from 90 to 2400 MPa.The result showed that at the consistent temperature the SO^2-₄ symmetric stretching vibration shifted to higher wavenumbers with increasing pressure,and at the consistent pressure it shifted to lower wavenumbers with the rise of temperature.Moreover,we obtained an equation p=190.44 Δυ_p+0.002 7t²+ 2.901 9t-111.68 as the correlation between temperature and pressure and Raman shift of the SO^2-₄ symmetric stretching vibration by fitting the data,and the equation can be used as a pressure gauge of fluid inclusions.更多还原