Quantitative Analysis of Melamine Based on Terahertz Spectroscopy

Fig. 1. Absorption spectra data. (a) Pure milk powder absorption spectra; (b) absorption spectra of pure milk powder, pure melamine and mixtures containing 10% melamine

Download full size

Fig. 2. Gradient absorption spectra of melamine concentration in milk powder

Download full size

Fig. 3. Prediction results of four regression models. (a) PCR; (b) SVR; (c) PLSR; (d) LSSVR

Download full size

Fig. 4. Prediction results of LSSVR model optimized by four algorithms. (a) GA-LSSVR; (b) PSO-LSSVR; (c) CS-LSSVR; (d) GWO-LSSVR

Download full size

Table 1. Sample preparation ratio information
View table
Table 1. Sample preparation ratio information
No. Mass fraction /% Thickness /mm
1 0 1.36
2 1 1.36
3 2 1.37
4 3 1.36
5 4 1.37
6 5 1.38
7 6 1.38
8 7 1.38
9 8 1.37
10 9 1.39
11 10 1.38
12 11 1.39
13 12 1.39
14 13 1.40
15 14 1.40
16 15 1.38
17 16 1.40
18 17 1.39
19 18 1.40
20 19 1.39
21 20 1.40

Tools

Get Citation

Copy Citation Text

Yiheng Guo, Fang Yan, Miaoyu Zhao, Xuan Zhuo. Quantitative Analysis of Melamine Based on Terahertz Spectroscopy[J]. Acta Optica Sinica, 2023, 43(19): 1930001

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites