DETECTION OF POISONOUS HERBS BY TERAHERTZ TIME-DOMAIN SPECTROSCOPY
Abstract
The aim of this paper is the application of terahertz (THz) spectroscopy combined with chemometrics techniques to distinguish poisonous and non-poisonous herbs which both have a similar appearance. Spectra of one poisonous and two non-poisonous herbs (Gelsemium elegans, Lonicera japonica Thunb and Ficus Hirta Vahl) were obtained in the range 0.2-1.4 THz by using a THz time-domain spectroscopy system. Principal component analysis (PCA) was used for feature extraction. The prediction accuracy of classification is between 97.78 to 100%. The results demonstrate an efficient and applicative method to distinguish poisonous herbs, and it may be implemented by using THz spectroscopy combined with chemometric algorithms.
About the Authors
H. . Zhang
School of Mechano-Electronic Engineering, Xidian University
Russian Federation
Russian Federation
Z. . Li
School of Mechano-Electronic Engineering, Xidian University; Guilin University of Aerospace Technology
Russian Federation
Russian Federation
T. . Chen
Guilin University of Electronic Technology
Russian Federation
Russian Federation
J. -J. Liu
Jiujiang University
Russian Federation
Russian Federation
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Review
For citations:
Zhang H., Li Z., Chen T., Liu J.-. DETECTION OF POISONOUS HERBS BY TERAHERTZ TIME-DOMAIN SPECTROSCOPY. Zhurnal Prikladnoii Spektroskopii. 2018;85(1):176(1)-176(7). (In Russ.)
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