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Acta Optica Sinica, Volume. 39, Issue 3, 0330001(2019)

Nephrite Origin Identification Based on Raman Spectroscopy and Pattern Recognition Algorithms

Huidi Xu1, Lulu Lin1, Zheng Li2, Meizhen Huang1、*, and Zhengyu Zhou3
Author Affiliations
  • 1 Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • 2 Shanghai Instrument and Electrical Analysis Instrument Co., Ltd., Shanghai 201805, China
  • 3 School of Ocean and Earth Science, Tongji University, Shanghai 200092, China
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    Pictures of nephrite samples from different origins. (a) Gansu nephrite; (b) Qinghai nephrite; (c) Xinjiang nephrite

    Fig. 1. Pictures of nephrite samples from different origins. (a) Gansu nephrite; (b) Qinghai nephrite; (c) Xinjiang nephrite

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    Raman spectra of nephrite samples. (a) Original spectra; (b) pretreated spectrum

    Fig. 2. Raman spectra of nephrite samples. (a) Original spectra; (b) pretreated spectrum

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    Raman spectra of nephrites from three origins

    Fig. 3. Raman spectra of nephrites from three origins

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    Relationship between decision tree number and error rate

    Fig. 4. Relationship between decision tree number and error rate

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    Verification results of random forest model

    Fig. 5. Verification results of random forest model

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    • Table 1. Major Raman peaks and attribution of corresponding vibrational bands

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      Table 1. Major Raman peaks and attribution of corresponding vibrational bands

      Peak position /cm-1Suggested attribution
      226.7Deformation vibration
      372.1Deformation vibration
      394.3Deformation vibration
      675.2Si—O—Si stretching vibration
      934.5Si—O stretching vibration
      1029.4Si—O—Si stretching vibration
      1060.4Si—O—Si stretching vibration

    • Table 2. Verification results of Mahalanobis distance model

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      Table 2. Verification results of Mahalanobis distance model

      Nephrite sampleNearest originMinimum distanceSecond near originSecond near distanceJudgement of origin
      Gansu 1Gansu0.1719Xinjiang0.3207Gansu
      Gansu 2Gansu0.1126Xinjiang0.2613Gansu
      Gansu 3Gansu0.0658Xinjiang0.2080Gansu
      Gansu 4Xinjiang0.0151Gansu0.0492Xinjiang
      Gansu 5Gansu0.0006Xinjiang0.0679Gansu
      Qinghai 1Qinghai0.1193Xinjiang4.3360Qinghai
      Qinghai 2Qinghai0.3684Xinjiang6.0405Qinghai
      Qinghai 3Qinghai1.0980Xinjiang9.5509Qinghai
      Qinghai 4Qinghai1.8542Xinjiang12.5377Qinghai
      Qinghai 5Qinghai0.6211Xinjiang7.3859Qinghai
      Xinjiang 1Xinjiang0.3712Gansu1.6180Xinjiang
      Xinjiang 2Xinjiang0.2288Gansu1.1755Xinjiang
      Xinjiang 3Xinjiang0.3687Gansu1.6108Xinjiang
      Xinjiang 4Xinjiang1.4333Qinghai3.7632Xinjiang
      Xinjiang 5Xinjiang0.1362Gansu0.8599Xinjiang
      Xinjiang 6Xinjiang0.2502Gansu1.2445Xinjiang
      Xinjiang 7Gansu0.2634Xinjiang0.4033Gansu
      Xinjiang 8Xinjiang0.0036Gansu0.2341Xinjiang
      Xinjiang 9Xinjiang0.0768Gansu0.6329Xinjiang
      Xinjiang 10Xinjiang0.0003Gansu0.1771Xinjiang
      Xinjiang 11Xinjiang0.1601Gansu0.9446Xinjiang
      Xinjiang 12Gansu0.3356Xinjiang0.4638Gansu
      Xinjiang 13Xinjiang3.7197Qinghai6.0006Xinjiang
      Xinjiang 14Xinjiang7.5184Qinghai9.0983Xinjiang
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    Huidi Xu, Lulu Lin, Zheng Li, Meizhen Huang, Zhengyu Zhou. Nephrite Origin Identification Based on Raman Spectroscopy and Pattern Recognition Algorithms[J]. Acta Optica Sinica, 2019, 39(3): 0330001

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    Paper Information

    Category: Spectroscopy

    Received: Sep. 13, 2018

    Accepted: Nov. 8, 2018

    Published Online: May. 10, 2019

    The Author Email:

    DOI:10.3788/AOS201939.0330001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology