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用太赫兹时域光谱(THz-TDS)技术研究了90#、93#、97#汽油和-10#柴油在0.25—1.5THz波段的响应特性。结果表明,不同油品其太赫兹响应图谱确实存在明显的差异,并从成分上分析了产生这些差异的原因。在成品油中,吸收系数受醇类添加剂的影响很大,芳烃次之,直链烷烃很少;折射率主要受成分中碳数的影响同时芳烃的作用也很大。通过吸收系数和折射率的不同能够实现成品油的鉴别和区分。
The response characteristics of 90 #, 93 #, 97 # gasoline and -10 # diesel oil in 0.25-1.5THz band were studied by THz-TDS technique. The results show that the different terahertz oil response spectrum does exist significant differences, and from the composition analysis of the causes of these differences. In the refined oil, the absorption coefficient is greatly affected by the alcohol additives, followed by the aromatic hydrocarbon, linear alkanes rarely; refractive index is mainly affected by the carbon content of the composition while the role of aromatics is also great. Through the absorption coefficient and refractive index difference can be identified and differentiated refined oil.