期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1120, 期 1-2, 页码 291-298出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2005.11.134
关键词
chromatographic fingerprint; COW; STW; TPA; PCA; alignment; vanillin
This study describes the chemometric treatment of vanillin fingerprint chromatograms to distinguish vanillin from different sources. Prior to principal component analysis, which is used to discriminate vanillin from different origins, the fingerprints are aligned. Three alignment algorithms are tested, correlation optimized warping (COW), target peak alignment (TPA) and semi-parametric time warping (STW). The performance of the three algorithms is evaluated and the effect of the different alignments on the PCA score plots is investigated. The alignment obtained with STW differs somewhat from that with COW and TPA. However, equivalent score plots were obtained regarding the different vanillin groups. (c) 2005 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据