光谱预处理方法对混胺近红外定量模型影响的研究  

Influence of Spectra Pretreatment on Calibration Models of Quantitative Analysis of Mixed Amine by Near Infrared Spectroscopy

作　　者：李华[1] 王菊香[2] 郭恒光[1] 陶杨[1] 刘洁[2] 

机构地区：[1]海军航空工程学院研究生管理大队,山东烟台264001 [2]海军航空工程学院飞行器工程系,山东烟台264001

出　　处：《分析科学学报》2010年第5期551-554,共4页Journal of Analytical Science

摘　　要：本文探讨了一阶导数、Savitzky-Golay平滑、小波变换(WT)和正交信号校正(OSC)预处理方法对混胺组分近红外光谱的预处理效果。采用预测集标准偏差(SEP)对各种预处理方法的最佳参数进行选择。比较了各种预处理方法的去噪能力,对预处理方法组合后的效果进行了评价。研究表明,WT和OSC能有效去除噪声,提高分析模型的精度,WT和OSC结合后的预处理效果更好。In the paper,several methods including first derivative,Savitzky-Golay smooth,wavelet transform（WT）and orthogonal signal correction（OSC）were used to pretreat IR spectral data and to establish the calibration model by partial least-squares（PLS）for estimating the contents of main constituents in mixed amine.The optimum pretreatment parameters were selected through the standard error of prediction（SEP）to form optimal models.The results showed that WT and OSC were the effective methods and the combination of WT and OSC（WT-OSC）is the best choice for eliminating the noise and enhamcing the precision.

关 键 词：近红外 预处理 混胺 小波变换 正交信号校正 

分 类 号：O657.33[理学—分析化学]