光谱学与光谱分析 |
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Research on the Method of Choosing Optimum Wavelengths Combination by Using Multiple Scattering Correction Technique |
LU Yong-jun, QU Yan-ling, FENG Zhi-qing, SONG Min |
The Institute of Optoelectronics of Dalian Nationalities University, Dalian 116600, China |
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Abstract Multiple scattering correction(MSC) algorithm can be used effectively to remove the effect of scattering due to the physical factors such as the density and humidity of sample granule, and as a result the ratio of signal to noise is improved greatly. Meantime correlation spectrum plays a important role in the choice of optimum wavelength set because it describes the linear correlationship between the absorbance and concentration of the sample’s ingredient under analysis. However, the correlation spectrum obtained by unitary linear regression(ULR) at single wavelength channel can be easily affected by the scattering so as to cover up the characteristic linear information of the sample. In order to solve the problem in the present paper MSC was applied to obtain useful signal and suppress noise of correlation spectrum. Through the careful calibration experiment of ginseng sample this idea has proved to be correct, and satisfactory result was obtained.
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Received: 2005-12-31
Accepted: 2006-03-28
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Corresponding Authors:
LU Yong-jun
E-mail: yongjun_lu@sina.com
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Cite this article: |
LU Yong-jun,QU Yan-ling,FENG Zhi-qing, et al. Research on the Method of Choosing Optimum Wavelengths Combination by Using Multiple Scattering Correction Technique [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(01): 58-61.
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URL: |
https://www.gpxygpfx.com/EN/Y2007/V27/I01/58 |
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