【摘要】 气体的红外吸收特性是红外光学方法分析气体的依据。基于HITRAN2004数据库用逐线积分法对变压器油中溶解气体CH₄、C₂H₆、C₂H₄、C₂H₂、CO、CO₂及H₂O的红外吸收特性进行分析,给出各气体在波段500⁴000cm^-1内的吸收系数、主要吸收谱带位置、最强吸收谱线的中心波数及其峰值吸收系数;以各气体特征频谱处的吸收谱线为研究对象,分析峰值吸收系数随压强、温度的变化规律。计算和分析结果是用傅里叶变换红外光谱、光声光谱等红外光学方法对变压器油中溶解气体进行定性定量分析的重要依据。更多还原

【Abstract】 Infrared absorption properties of gases are the bases of gaseous analyses by infrared optical methods. Based on HITRAN2004 database, the infrared absorption properties of dissolved gases in transformer oil including CH4, C2H6, C2H4, C2H2, CO, CO2 and H2O, were researched by the line-by-line integration method. The absorption coefficients, the locations of main absorption bands, the central wave numbers and the peak absorption coefficients of the strongest absorption lines of each gas in the 500~4000cm?1 spectral range were given. As for the absorption lines in the characteristic spectrum of each gas, the laws that the peak absorption coefficients vary with the pressure and temperature were also analyzed. Calculation and analysis results are important bases that can be used in qualitative and quantitative analyses of dissolved gases in transformer oil by infrared optical methods such as Fourier transform infrared spectroscopy and photoacoustic spectroscopy.更多还原