Yi-lin LIU, Hai-yan ZHANG, Hai-gen PENG, Long-lian ZHAO, Xiao-qiu TAO, Jun-hui LI. Reliability and Chemical Composition Analysis of Tobacco Leaf Grade Model by Near-Infrared Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2020, 40(10): 3260
- Spectroscopy and Spectral Analysis
- Vol. 40, Issue 10, 3260 (2020)
Fig. 1. PPF projection with 8 principal components
Fig. 2. Spectrum during 4 200~5 200 cm-1
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Table 1. Sample and parts
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Table 2. Category code
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Table 3. Part discrimination results based on near-infrared data (internal cross)
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Table 4. Organic groups absorbed in different frequency ranges
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Table 5. Chemical composition characteristics of different grades of tobacco in Sichuan Province
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