Detection of illegal additives for health products based on terahertz spectroscopy

Yiwen Fu; Xiai Chen; Xue Wu; Piaoyun Chen; Pingjie Huang

doi:10.1117/12.2538462

18 November 2019 Detection of illegal additives for health products based on terahertz spectroscopy

Yiwen Fu, Xiai Chen, Xue Wu, Piaoyun Chen, Pingjie Huang

Proceedings Volume 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI; 111960B (2019) https://doi.org/10.1117/12.2538462
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

The terahertz time-domain spectra of sildenafil, metformin hydrochloride and phenolphthalein samples were obtained by terahertz time-domain spectroscopy. The refractive index spectra and absorption spectra of these additives were obtained according to the formula. The experimental results show that these three health supplements have obvious characteristic absorption peaks in the terahertz band. The illegal additives were classified based on support vector machine (SVM). The experimental results show that the established SVM model can accurately identify the check set and identify the additive within a certain range. The feasibility of terahertz time-domain spectroscopy for food ingredient detection was verified, which provided a new experimental method for the detection of health product additives.

Citation Download Citation

Yiwen Fu, Xiai Chen, Xue Wu, Piaoyun Chen, and Pingjie Huang "Detection of illegal additives for health products based on terahertz spectroscopy", Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 111960B (18 November 2019); https://doi.org/10.1117/12.2538462

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