Xin TANG, Sheng-ling ZHOU, Shi-ping ZHU, Ling-kai MA, Quan ZHENG, Jing PU. Analysis and Identification of Terahertz Tartaric Acid Spectral Characteristic Region Based on Density Functional Theory and Bootstrapping Soft Shrinkage Method[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2740
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 9, 2740 (2022)
Fig. 1. Schematic diagram of the T-SPEC terahertz time-domain spectroscopy equipment
Fig. 2. The original absorption spectrum of the L-TA sample (a) and the pretreated absorption spectrum (b)
Fig. 3. Schematic diagram of experimental and simulated molecular vibrations at 1.11 THz
Fig. 4. RMSECV values with the number of iterations (a) and the weights at iteration number 7 (b)
Fig. 5. Multi-method filtering of L-TA THz spectra for frequency bands
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Table 1. Statistical table of L-TA sample division data
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Table 2. The spectral analysis of L-TA
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