Journal
ANALYTICA CHIMICA ACTA
Volume 585, Issue 2, Pages 241-245Publisher
ELSEVIER
DOI: 10.1016/j.aca.2007.01.008
Keywords
in situ Raman spectroscopy; laser irradiation; self-modeling curve resolution; band-target entropy minimization (BTEM)
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In this paper, we present the use of one of the self-modeling curve resolution techniques, band-target entropy minimization (BTEM), which is independent of any spectral library, to elucidate Raman pure component spectra of two different manganese oxides arising from laser-induced structural changes. It is often extremely difficult to obtain the pure Raman spectrum of MnO2 without changing it to another structural form. However, using BTEM to analyze the collected in situ Raman spectra measured as a function of laser exposure time, has enabled us to obtain both the pure component spectra of the original sample and the product due to laser irradiation. This technique proves to be an efficient Raman spectral interpretation method for thermal sensitive solid samples. (c) 2007 Published by Elsevier B.V.
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