• Acta Optica Sinica
  • Vol. 45, Issue 6, 0630001 (2025)
Ming Gao1,2,3, Ruifang Yang2,3,*, Nanjing Zhao1,2,3,**, Gaofang Yin2,3..., Liang Wang2,3,4, Yuxi Jiang2,3,5, Hengxin Song2,3,4 and Xiaowei Chen2,3|Show fewer author(s)
Author Affiliations
  • 1Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui , China
  • 2Key Laboratory of Environmental Optics and Technology, Chinese Academy of Sciences, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physics Science, Chinese Academy of Sciences, Hefei 230031, Anhui , China
  • 3Key Laboratory of Optical Monitoring Technology for Environment of Anhui Province, Hefei 230031, Anhui , China
  • 4School of Biology, Food and Environment, Hefei University, Hefei 230601, Anhui , China
  • 5University of Science and Technology of China, Hefei 230026, Anhui , China
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    DOI: 10.3788/AOS241279 Cite this Article Set citation alerts
    Ming Gao, Ruifang Yang, Nanjing Zhao, Gaofang Yin, Liang Wang, Yuxi Jiang, Hengxin Song, Xiaowei Chen. Rapid Qualitative and Quantitative Analysis Method of Multi-Component Polycyclic Aromatic Hydrocarbons in Groundwater Using CNN and 3DEEM[J]. Acta Optica Sinica, 2025, 45(6): 0630001 Copy Citation Text show less
    CNN qualitative and quantitative analysis method
    Fig. 1. CNN qualitative and quantitative analysis method
    Fluorescence fingerprint characteristics and linear correlation regions. (a) Anthracene; (b) phenanthrene; (c) pyrene; (d) naphthalene; (e) chrysene; (f) fluoranthrene; (g) benzo [a] pyrene; (h) benzo [b] fluoranthrene
    Fig. 2. Fluorescence fingerprint characteristics and linear correlation regions. (a) Anthracene; (b) phenanthrene; (c) pyrene; (d) naphthalene; (e) chrysene; (f) fluoranthrene; (g) benzo [a] pyrene; (h) benzo [b] fluoranthrene
    Relationship between mass concentration of benzo [a]pyrene solution and fluorescence intensity
    Fig. 3. Relationship between mass concentration of benzo [a]pyrene solution and fluorescence intensity
    Three representative samples of incorrect predictions. (a) No. 267 sample; (b) No. 291 sample; (c) No. 301 sample
    Fig. 4. Three representative samples of incorrect predictions. (a) No. 267 sample; (b) No. 291 sample; (c) No. 301 sample
    Comparison of predicted mass concentration by proposed method and actual mass concentration. (a) Actual mass concentration; (b) predicted mass concentration
    Fig. 5. Comparison of predicted mass concentration by proposed method and actual mass concentration. (a) Actual mass concentration; (b) predicted mass concentration
    Error in predicting mass concentration of PAHs. (a) Relative error; (b) absolute error
    Fig. 6. Error in predicting mass concentration of PAHs. (a) Relative error; (b) absolute error
    Fluorescence background of actual underground water. (a) RS1; (b) RS2
    Fig. 7. Fluorescence background of actual underground water. (a) RS1; (b) RS2
    Error of RS1 quantitative analysis. (a) Actual mass concentration; (b) predicted mass concentration; (c) relative error; (d) absolute error
    Fig. 8. Error of RS1 quantitative analysis. (a) Actual mass concentration; (b) predicted mass concentration; (c) relative error; (d) absolute error
    Results of RS2 qualitative analysis
    Fig. 9. Results of RS2 qualitative analysis
    Error of RS2 quantitative analysis. (a) Actual mass concentration; (b) predicted mass concentration; (c) relative error; (d) absolute error
    Fig. 10. Error of RS2 quantitative analysis. (a) Actual mass concentration; (b) predicted mass concentration; (c) relative error; (d) absolute error
    Componentof PAHsPAHs-STDSPAHs-EDSPAHs-RealS
    RS1RS2
    Total3301100070
    01682011
    114437961616
    212024521414
    ≥350393208
    Table 1. Summary of 3DEEM spectral data
    MetricsAccuracy /%True numberTotal number
    Sample98.2324330
    Component99.826342640
    Table 2. Evaluation results of qualitative model
    SamplenumberAnthracenePhenanthrenePyreneNaphthaleneChryseneFluoranthreneBenzo [a] pyreneBenzo [b] fluoranthrene
    26711
    26811
    29111
    30111
    30511
    30611
    Table 3. Actual component of predicted error samples by qualitative model

    Sample

    number

    AnthracenePhenanthrenePyreneNaphthaleneChryseneFluoranthreneBenzo [a] pyreneBenzo [b] fluoranthrene
    267111
    268111
    2911
    3011
    3051
    3061
    Table 4. Predicted error sample data of qualitative model
    StandardTrue numberComponent numberAComponent
    M12585330×80.979
    M22440330×80.924
    M32183330×80.827
    Table 5. Evaluation results of quantitative model
    SampleAnthracenePhenanthrenePyreneNaphthaleneChryseneFluoranthreneBenzo [a] pyreneBenzo [b] fluoranthrene
    PAHs-STDS1.0‒10.08.0‒112.11.0‒12.28.0‒120.720.0‒373.420.0‒324.620.0‒400.016.0‒400.0
    RS10.6‒1.17.9‒15.80.9‒1.810.5‒21.033.2‒66.415.4‒30.838.4‒76.813.1‒26.1
    RS21.5‒4.441.9‒125.74.0‒12.058.4‒175.399.7‒299.032.5‒97.4158.4‒475.142.5‒127.5
    Table 6. Mass concentration range of samples in the test set
    Ming Gao, Ruifang Yang, Nanjing Zhao, Gaofang Yin, Liang Wang, Yuxi Jiang, Hengxin Song, Xiaowei Chen. Rapid Qualitative and Quantitative Analysis Method of Multi-Component Polycyclic Aromatic Hydrocarbons in Groundwater Using CNN and 3DEEM[J]. Acta Optica Sinica, 2025, 45(6): 0630001
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