| 光谱学与光谱分析 |
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| Raman Spectroscopy Fluorescence Background Correction and Its Application in Clustering Analysis of Medicines |
| CHEN Shan1, LI Xiao-ning1, LIANG Yi-zeng1*, ZHANG Zhi-min1, LIU Zhao-xia2, ZHANG Qi-ming2, DING Li-xia2, YE Fei3 |
1. Research Center of Modernization of Traditional Chinese Medicines, Central South University, Changsha 410083, China
2. National Institute for the Control of Pharmaceutical and Biological Products, Beijing 100050, China
3. B &W Tek, Inc. Shanghai 2204-2205 Mingshen Plaza，Shanghai 200233, China |
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Abstract During Raman spectroscopy analysis, the organic molecules and contaminations will obscure or swamp Raman signals. The present study starts from Raman spectra of prednisone acetate tablets and glibenclamide tables, which are acquired from the BWTek i-Raman spectrometer. The background is corrected by R package baselineWavelet. Then principle component analysis and random forests are used to perform clustering analysis. Through analyzing the Raman spectra of two medicines, the accurate and validity of this background-correction algorithm is checked and the influences of fluorescence background on Raman spectra clustering analysis is discussed. Thus, it is concluded that it is important to correct fluorescence background for further analysis, and an effective background correction solution is provided for clustering or other analysis.
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Received: 2009-12-10
Accepted: 2010-03-20
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Corresponding Authors:
LIANG Yi-zeng
E-mail: yizeng_liang@263.net
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