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	Terahertz spectroscopy for quantifying solid mixtures
	Wang Yingxin ; Kang Kejun ; Chen Zhiqiang ; Zhao Ziran ; Zhang Li
	2010-10-12 ; 2010-10-12
关键词	Experimental/ calibration organic compounds spectral line breadth spectrochemical analysis submillimetre wave spectra/ terahertz spectroscopy solid mixtures quantitative detection terahertz absorption spectra anhydrous theophylline lactose monohydrate calibration theophylline concentrations lactose concentrations Lorentzian lineshape polynomial fitting quality control/ A7870G Microwave and radiofrequency interactions with condensed matter A8280D Electromagnetic radiation spectrometry (chemical analysis)
中文摘要	A quantitative detection method based on the terahertz absorption spectra was developed to analyze solid mixture. Specifically mixtures of anhydrous theophylline and lactose monohydrate were analyzed experimentally. Samples with known compositions were used to calibrate the system which was then used to measure the theophylline and lactose concentrations with average errors of 5.39% and 6.91%, respectively. With lactose as an unknown component, the absorption peak was fitted with the Lorentzian lineshape and a polynomial. The theophylline concentrations calculated using the peak intensity had an average error of 6.64%. These results demonstrate that the system can be used to quantitatively analyze mixture components based on the characteristic information in terahertz spectra for quality control applications.
语种	中文
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82584]
专题	清华大学
推荐引用方式 GB/T 7714	Wang Yingxin,Kang Kejun,Chen Zhiqiang,et al. Terahertz spectroscopy for quantifying solid mixtures[J],2010, 2010.
APA	Wang Yingxin,Kang Kejun,Chen Zhiqiang,Zhao Ziran,&Zhang Li.(2010).Terahertz spectroscopy for quantifying solid mixtures..
MLA	Wang Yingxin,et al."Terahertz spectroscopy for quantifying solid mixtures".(2010).

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