摘要
利用太赫兹(THz)波谱技术测量了大豆油及熟大豆油(一种地沟油)在0～3.0THz范围内的时域谱和频域吸收谱,并通过试验得到两种油的折射率、吸收系数等重要光学参数。采用太赫兹时域光谱分析技术(THz-TDS)对波谱进行显示和分析,结果表明两种油在此波段的特性有显著的不同,并且会随着频率的增加而变化,表明经过高温的熟大豆油可以通过这种方法与大豆油进行鉴别,这对利用太赫兹波谱技术检测地沟油有着重要的意义。
Using terahertz(THz)spectroscopy technique,oil time-domain spectroscopy of the waste oil(stand oil)and vegetable oil(soybean oil)in the range from 0 to 3.0 THz is measured.Refractive index,absorption coefficient and other important optical parameters of the above oils are achieved by experiment,the results showed that the two oil properties in this band were significantly different,and changed as the frequency increases.Ripe soybean oil on high temperature and soybean oil could be identified by this method.It has important significance to detect the waste oil utilizing terahertz spectroscopy.
出处
《农业工程》
2012年第6期37-40,共4页
AGRICULTURAL ENGINEERING
基金
国家863计划(项目编号:2012AA101608)
河南省财政厅粮食专项(项目编号:ZX2011-22)
关键词
熟大豆油
太赫兹频谱
折射率
吸收系数
Ripe soybean oil,THz spectrum,Refractive index,Absorption coefficient
