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Proceedings Paper

The THz fingerprint spectra of the active ingredients of a TCM medicine: Herba Ephedrae
Author(s): Shihua Ma; Guifeng Liu; Peng Zhang; Xiyu Song; Te Ji; Wenfeng Wang
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Paper Abstract

In this paper, THz-TDS has been used to measure the spectral properties of two active ingredients of Herba Ephedrae: ephedrine and pseudoephedrine, which exist in hydrochloride salts. The THz spectra of the sole-ingredient, twoingredient and three-ingredient compounds are studied. We obtained the finger-print spectra of the net active ingredients of the medicine, and also measured the mixtures of by two or three active ingredients at the different ratios. At the same time, theoretical analysis and quantitative analysis is applied to foretell the different THz spectra, identify the ingredients and infer the contents of principal components in samples. The THz spectroscopy is a potential and promising technique in evaluating and inspecting the quality of the drugs in the TCM field.

Paper Details

Date Published: 16 February 2009
PDF: 10 pages
Proc. SPIE 7277, Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology, 727711 (16 February 2009); doi: 10.1117/12.823369
Show Author Affiliations
Shihua Ma, Shanghai Institute of Applied Physics (China)
Guifeng Liu, Shanghai Institute of Applied Physics (China)
Peng Zhang, Shanghai Institute of Applied Physics (China)
Xiyu Song, Shanghai Institute of Applied Physics (China)
Te Ji, Shanghai Institute of Applied Physics (China)
Wenfeng Wang, Shanghai Institute of Applied Physics (China)


Published in SPIE Proceedings Vol. 7277:
Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology
Jianquan Yao; Shenggang Liu; Xi-Cheng Zhang, Editor(s)

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