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Proceedings Paper

Design of an FT-NIR spectrometer for online quality analysis of traditional Chinese medicine manufacturing process
Author(s): Ren Zhu; Lan Wu; Shiming Wang; Linhua Ye; Zhihua Ding
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Paper Abstract

As a fast, non-destructive analysis method, Fourier transform (FT) near-infrared (NIR) spectroscopy is very suitable and effective for online quality analysis of traditional Chinese medicine (TCM) manufacturing process. In this thesis, the theoretics of FT-NIRS was analyzed and an FT-NIR spectrometer with 4 cm-1 resolution in the 12500-5000 cm-1 frequency range was designed. The spectrometer was based on a Michelson interferometer with Bromine tungsten lamp as the NIR light source and InGaAs detector to collect the interference signal. Each element was designed and chosen to provide maximum sensitivity in the NIR spectral region. A fiber-optic flow cell system was used to realize online analysis of traditional Chinese medicine. The performance of the spectrometer was evaluated and the feasibility of using FT-NIR spectrometer to get absorption spectra of traditional Chinese medicine was demonstrated.

Paper Details

Date Published: 28 November 2007
PDF: 7 pages
Proc. SPIE 6834, Optical Design and Testing III, 68343B (28 November 2007); doi: 10.1117/12.757261
Show Author Affiliations
Ren Zhu, Zhejiang Univ. (China)
Lan Wu, Zhejiang Univ. (China)
Shiming Wang, Zhejiang Univ. (China)
Linhua Ye, Zhejiang Univ. (China)
Zhihua Ding, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 6834:
Optical Design and Testing III
Yongtian Wang; Theo T. Tschudi; Jannick P. Rolland; Kimio Tatsuno, Editor(s)

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