| 利用多元散射校正提高油菜籽脂肪酸近红外分析精度 |
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| 引用本文： | 熊智新,武中臣,陈朝霞,胡慕伊.利用多元散射校正提高油菜籽脂肪酸近红外分析精度[J].光谱实验室,2007,24(5):953-958. |
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| 作者姓名： | 熊智新 武中臣 陈朝霞 胡慕伊 |
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| 作者单位： | 1. 南京林业大学化学工程学院自动化教研室063信箱,南京市蟠龙路159号,210037
2. 山东大学威海分校空间科学与应用物理系,山东省威海市,264209 |
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| 基金项目： | 南京林业大学校科研和教改项目 |
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| 摘 要： | 近红外光谱技术可对完整油菜籽进行快速无损检测分析,但因受样品装填密度、颗粒大小及分布不均匀等物理因素的影响,光谱测量散射误差较大.本文利用MSC技术、相关分析和微分预处理光谱数据,结合PLS回归建模和交叉验证方法,建立了油菜籽脂肪酸近红外光谱分析模型.研究表明,MSC校正和其它光谱预处理方法相结合显著地提高了模型的分析精度,减少了模型的PLS主因子数.
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| 关 键 词： | 多元散射校正 近红外光谱 油菜籽 脂肪酸 |
| 文章编号： | 1004-8138（2007）05-0953-06 |
| 修稿时间： | 2007-07-31 |
Application of MSC to the Improvement of Analyzing Accuracy of Fatty Acid in Rapeseed by Near-Infrared Spectroscopy |
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| XIONG Zhi-Xin,WU Zhong-Chen,CHEN Zhao-Xia,HU Mu-Yi.Application of MSC to the Improvement of Analyzing Accuracy of Fatty Acid in Rapeseed by Near-Infrared Spectroscopy[J].Chinese Journal of Spectroscopy Laboratory,2007,24(5):953-958. |
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| Authors: | XIONG Zhi-Xin WU Zhong-Chen CHEN Zhao-Xia HU Mu-Yi |
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| Institution: | College of Chemical Engineering , Nan jin g Forest University ,Nan jing 210037 , P. R. China;Department of Space Science and Applied Physics,Shandong University,Weihai,Shandong 264209,P. R, China |
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| Abstract: | Near-infrared spectroscopy analysis (NIRSA) is an effective technique to test intact rapeseeds rapidly and non-destructively.But many scattering errors were also introduced into the measuring spectrum data due to the physical factors such as the density,size and distribution of sample granules.In the present paper,multiplication scatter correction (MSC) combined with correlation analysis and differential calculation was employed to pre-treat the spectrum data.The calibration models of NIRSA were produced by partial least square (PLS) regression and cross validation to determine the content of fatty acid in rapeseed.The result shows that the MSC with other data pretreatment methods can improve the predicting accuracy obviously and decrease the PLS factors in models. |
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| Keywords: | Multiplication Scatter Correction Near-Infrared Spectroscopy Rapeseed Fatty Acid |
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