运用太赫兹时域光谱技术定量分析柴油的含硫量(英文)  

Quantitative determination of sulfur content in diesel using THz-TDS technology

作　　者：赵卉[1] 赵昆[1,2] 田璐[1] 苗青[1] 尼浩[1] 

机构地区：[1]中国石油大学(北京)理学院,北京102249 [2]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《红外与毫米波学报》2012年第5期399-402,共4页Journal of Infrared and Millimeter Waves

基　　金：Supported by the Program for New Century Excellent Talents in University(NCET-08-0841);the National Natural Science Foundation of China(60778034;60877038);the Research Fund for the Doctoral Program of Higher Education(200804250006);the Science Foundation of China University of Petroleum;Beijing(QZDX2010-01)

摘　　要：测量柴油样品的太赫兹时域光谱并对其含硫量进行了定量计算.在0.2～1.5 THz范围内,柴油的吸收系数随着太赫兹频率和硫含量呈规律性递增.基于这一变化关系建立起了硫含量与太赫兹吸收系数和频率的多元非线性模型,通过测量柴油的太赫兹光谱代入此模型即可计算出柴油的硫含量.这一结果为太赫兹时域光谱技术应用于柴油含硫量的无损快速检测奠定了理论基础,显示出巨大的应用前景.The frequency-dependent absorption characteristics of diesels with different sulfur content have been studied in the spectral range of 0.2-1.5 THz by the terahertz time-domain spectroscopy （THz-TDS）. The absorption coefficient presented a regular change with the THz frequency and sulfur content, and the absorption coefficient increases with the frequency at the same concentration, vice versa. A nonlinear multivariate model was established and the sulfur content in diesel can be confirmed easily by means of the measured THz frequency-dependent absorption coefficient. The results made the quantitative analysis of sulfur content in diesel possible by THz-TDS technology and indicated the bright future in practical application.

关 键 词：光谱学 硫含量 太赫兹时域光谱 柴油 

分 类 号：O433.4[机械工程—光学工程]