小波变换-主成分回归法在四组分食用色素同时测定中的应用研究  

Study on Simultaneous Determination of Pigments in Tetrad Mixtures by Spectrophotometry with Wavelet Transform-Principal Component Regression Method

作　　者：司圣柱[1] 王丽平[1] 董雄辎[1] 

机构地区：[1]合肥师范学院化学化工系,安徽合肥230061

出　　处：《合肥师范学院学报》2009年第6期69-72,共4页Journal of Hefei Normal University

基　　金：安徽省高校青年教师资助计划项目(2008jqw1125)

摘　　要：将小波变换(WT)与主成分回归(PCR)法相结合,对苋菜红、胭脂红、、诱惑红、赤藓红四种食用色素进行同时测定。选用Bior1.1小波对四组分混合物的原始吸光度数据进行一次分解,以低频系数作校正集并用交叉验证法选择主成分数进行PCR建模,获得了令人满意的预测结果。A wavelet transform（WT） combined with principal component regression （PCR）method is established for simultaneous determination of tetrad mixtures of carmine, amaranth, allura red and erythrosine A PCR multivariate calibration model on the first approach coefficients of the original visible absorption spectra extracted by Bior1. 1 wavelet transform, using cross-validation method leaving one out of calibration sample at a time to select the optimal number of component, and produces a satisfactory result with good prediction accuracies.

关 键 词：小波变换 主成分回归 食用色素 分光光度 同时测定 

分 类 号：O651[理学—分析化学]