Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.talanta.2006.11.037
Title: Fourier transform Raman spectral measurements of powdered quaternary mixtures of organic compounds. Exceptional pure component spectral reconstruction using band-target entropy minimization (BTEM)
Authors: Srilakshmi, C.
Widjaja, E.
Anderson, B.G.
Garland, M. 
Keywords: Acetamide
Band-target entropy minimization (BTEM)
Dicyandiamide
FT-Raman
Melamine
Quaternary mixtures
Spectral reconstruction
Urea
Issue Date: 30-Apr-2007
Source: Srilakshmi, C., Widjaja, E., Anderson, B.G., Garland, M. (2007-04-30). Fourier transform Raman spectral measurements of powdered quaternary mixtures of organic compounds. Exceptional pure component spectral reconstruction using band-target entropy minimization (BTEM). Talanta 72 (2) : 847-853. ScholarBank@NUS Repository. https://doi.org/10.1016/j.talanta.2006.11.037
Abstract: Fourier transform Raman spectra of eight mixtures of four organic solids, namely dicyandiamide, melamine, acetamide and urea were measured. Matrices formed from these spectra were first subjected to singular value decomposition to obtain the right singular vectors. The right singular vectors were then subjected to blind source separation using band-target entropy minimization (BTEM), thus no a priori information (i.e. involving the nature of the components present, their spectra, nor their concentrations) was included in the analysis. The recovered pure component spectra are of exceptionally high quality and are consistent with pure reference spectra. Various empirical and statistical tests, such as the Euclidean norm and target transform factor analysis, were employed to assess the quality of the recovered spectra. The present results indicate the applicability of combined Raman and BTEM analysis for solid mixtures. © 2006 Elsevier B.V. All rights reserved.
Source Title: Talanta
URI: http://scholarbank.nus.edu.sg/handle/10635/63950
ISSN: 00399140
DOI: 10.1016/j.talanta.2006.11.037
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