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8313982 
Journal Article 
非平滑非负矩阵分解解析土壤多环芳烃三维荧光光谱 
Huang, Y; Zhao, N; Meng, D; Zuo, Z; Cheng, Z; Chen, Y; Chen, X 
2020 
Science Press 
47 
10 
Chinese 
Three-dimensional fluorescence spectra of polycyclic aromatic hydrocarbons (PAHs) in soil are directly recorded using a fluorescence spectrophotometer. To identify the components of PAHs in soil, nonsmooth non-negative matrix factorization (nsNMF) are used. Results show that NMF can effectively extract the fluorescence spectrum signal of a single PAH from the mixture spectrum. The similarity coefficient between the analytical spectra and corresponding reference spectra obtained by nsNMF under random initial values is all above 0.824, which is higher than that of the standard NMF based on alternating non-negative least squares (NMF/ANLS). In farmland soil, the similarity coefficients of phenanthrene and anthracene between the analytical spectra and corresponding reference spectra increased from 0.758 and 0.845 (NMF/ANLS) to 0.907 and 0.913 (nsNMF), respectively. The combination of three-dimensional fluorescence spectra and nsNMF can facilitate rapid identification of components of PAHs in soil. © 2020, Chinese Lasers Press. All right reserved. 
Component recognition; Nonnegative matrix factorization; Polycyclic aromatic hydrocarbons; Soil; Spectroscopy; Three-dimensional fluorescence spectra