• Spectroscopy and Spectral Analysis
  • Vol. 40, Issue 10, 3235 (2020)
Jia-feng PANG1,1,*, Chen TANG1,1, Yan-kun LI1,1, Chong-ran XU1,1, and Xi-hui BIAN1,1
Author Affiliations
  • 1[in Chinese]
  • 11. North China Electric Power University, Department of Environmental Science and Engineering, Baoding 071003, China
  • show less
    DOI: 10.3964/j.issn.1000-0593(2020)10-3235-06 Cite this Article
    Jia-feng PANG, Chen TANG, Yan-kun LI, Chong-ran XU, Xi-hui BIAN. Identification of Melamine in Milk Powder by Mid-Infrared Spectroscopy Combined With Pattern Recognition Method[J]. Spectroscopy and Spectral Analysis, 2020, 40(10): 3235 Copy Citation Text show less
    Raw Infrared spectra of milk powder(a): Pure milk powder; (b): Melamine-containing milk powder
    Fig. 1. Raw Infrared spectra of milk powder
    (a): Pure milk powder; (b): Melamine-containing milk powder
    Spectra examples of pure milk powder and melamine-containing milk powdera: Melamine-containing milk powder; b: Pure milk powder
    Fig. 2. Spectra examples of pure milk powder and melamine-containing milk powder
    a: Melamine-containing milk powder; b: Pure milk powder
    The classification results of PCA+: Melamine-containing milk powder;◇: Pure milk powder
    Fig. 3. The classification results of PCA
    +: Melamine-containing milk powder;◇: Pure milk powder
    The classification results of NMF+: Melamine-containing milk powder;◇: Pure milk powder
    Fig. 4. The classification results of NMF
    +: Melamine-containing milk powder;◇: Pure milk powder
    The classification results of PLS-DA(a): Melamine-containing milk powder; (b): Pure milk powder
    Fig. 5. The classification results of PLS-DA
    (a): Melamine-containing milk powder; (b): Pure milk powder
    The classification results of LDA+: Melamine-containing milk powder; ◇: Pure milk powder
    Fig. 6. The classification results of LDA
    +: Melamine-containing milk powder; ◇: Pure milk powder
    The classification results of ULDA+: Melamine-containing milk powder; ◇: Pure milk powder
    Fig. 7. The classification results of ULDA
    +: Melamine-containing milk powder; ◇: Pure milk powder
    The transformation vector plot for ULDA
    Fig. 8. The transformation vector plot for ULDA
    Jia-feng PANG, Chen TANG, Yan-kun LI, Chong-ran XU, Xi-hui BIAN. Identification of Melamine in Milk Powder by Mid-Infrared Spectroscopy Combined With Pattern Recognition Method[J]. Spectroscopy and Spectral Analysis, 2020, 40(10): 3235
    Download Citation