Raman spectrum-based cosmetic authenticity nondestructive identification method
A Raman spectroscopy and cosmetic technology, applied in the field of cosmetic authenticity identification, can solve the problems of poor applicability, complicated operation, different standards, etc., and achieve the effects of strong versatility, simple operation and high accuracy
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Embodiment 1
[0033] Such as figure 1 Shown, a kind of cosmetic authenticity nondestructive identification method based on Raman spectrum, comprises the following steps:
[0034] S1 establishes a microscopic Raman discrimination model library and a handheld Raman discrimination database;
[0035] S2 Use the hand-held Raman to collect the spectrum of the sample to be identified, compare the collected spectrum with the hand-held Raman discrimination database, and make a preliminary judgment on the sample to be identified. If the authenticity cannot be determined, go to the next step;
[0036] S3 uses micro-Raman to collect the spectrum of the sample to be identified, compares the collected spectrum with the micro-Raman discriminant model library, and makes a final judgment.
[0037] The aforementioned micro-Raman is a desktop micro-Raman spectrometer, and the handheld Raman is a hand-held Raman spectrometer.
[0038] As an optimization: in the above S1, the principle of establishing the mic...
Embodiment 2
[0053] Now there are unknown sample 1 and unknown sample 2, both of which are liquid foundation of a certain well-known brand. Many counterfeit products are on the market, and the present invention is used to identify the samples. First find three authentic products (without batch number), establish a handheld Raman identification database and a microscopic Raman identification model library, and then identify them.
[0054] Judgment result reference of unknown sample 1 Figure 2-4 , the inner packaging, outer packaging, and contents of the unknown sample 1 were compared with the spectra in the emulsion database in the hand-held Raman discrimination database. Points) are directly judged as authentic.
[0055] Unknown sample 2 judgment result reference Figure 5-8 , the inner packaging, outer packaging, and contents of the unknown sample 2 are compared with the spectra in the emulsion database in the hand-held Raman discrimination database. If two results are judged as betwee...
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