Bing WU, Ke-ming YANG, Wei GAO, Yan-ru LI, Qian-qian HAN, Jian-hong ZHANG. EC-PB Rules for Spectral Discrimination of Copper and Lead Pollution Elements in Corn Leaves[J]. Spectroscopy and Spectral Analysis, 2022, 42(10): 3256
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 10, 3256 (2022)
Fig. 1. Original spectral data of corn leaves under different stress gradients
(a): Original spectral curve of corn leaves under different Cu2+ concentration stress; (b): Original spectral curve of corn leaves under different Pb2+ concentration stress
(a): Original spectral curve of corn leaves under different Cu2+ concentration stress; (b): Original spectral curve of corn leaves under different Pb2+ concentration stress
Fig. 2. Spectra processed by different spectral conversions
Fig. 3. Correlation between CLI and Cu-Pb element types of each order
Fig. 4. The distribution of two-dimensional copper-lead discriminant feature points and discriminant rule lines in the training set
Fig. 5. The distribution of two-dimensional copper-lead discriminant feature points and discriminant rule lines in the verification set
Fig. 6. The distribution of three-dimensional copper-lead discriminant feature points and discriminant rule plans in the training set
Fig. 7. The distribution of three-dimensional copper-lead discriminant feature points and discriminant rule plans in the verification set
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Table 1. Cu2+ and Pb2+ contents in corn leaves under different concentration gradients
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Table 2. Correlation coefficients between FOD of each order and heavy metal copper-lead element types
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