Acta Optica Sinica, Volume. 36, Issue 12, 1230001(2016)

Nondestructive Discrimination of Shoushan Stone and Laos Stone Based on Raman Spectroscopy and Multivariate Methods

Li Xia1,2、*, Huang Meizhen1,2, Song Biao1, Zou Ye1, Chen Jie1, and Wang Yang3
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    The Raman spectra of 35 stone samples (13 Shoushan stones and 22 Laos stones) are measured by a self-developed portable Raman spectrometer Hx-Spec, which is excited by a 785 nm diode laser and the spectrum range is 200-2700 cm-1 with a resolution of 6 cm-1. A multioariate model is established by combining the principal component analysis (PCA) and the linear discriminant analysis (LDA), a discrimination sensitivity of 86.7% and a specificity of 100% are achieved in separating Laos stone from Shoushan stone, while the performance of corresponding receiver operating characteristic (ROC) curve is 0.977. Besides, a discriminant accuracy achieves 87.5% after 8 new samples are added as a validation. These results demonstrate that the utility of portable Raman spectrometer combined with chemometrics provides a new strategy to discriminate the Shoushan and Laos stones.

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    Li Xia, Huang Meizhen, Song Biao, Zou Ye, Chen Jie, Wang Yang. Nondestructive Discrimination of Shoushan Stone and Laos Stone Based on Raman Spectroscopy and Multivariate Methods[J]. Acta Optica Sinica, 2016, 36(12): 1230001

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    Paper Information

    Category: Spectroscopy

    Received: Jul. 4, 2016

    Accepted: --

    Published Online: Dec. 14, 2016

    The Author Email: Xia Li (lixia00@sjtu.edu.cn)

    DOI:10.3788/aos201636.1230001

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