Carbon-13 Nuclear Magnetic Resonance Spectrometry

Springer Series in Wood Science Methods in Lignin Chemistry (Edited by S.Y. Lin and C.W. Dence) 

100 ppm) is ascribable to aromatic and olefinic carbons and the third (100 to lOppm) is attributed to aliphatic carbon atoms (Nimz et al. 1981). 

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Robert, D. (1992) Characterization in solution Spectroscopic methods. 5.4. Carbon-13 nuclear magnetic resonance spectrometry. In Lin, S. Y., and Dence, C. W. (eds). Methods in Lignin Chemistry, Springer-Verlag, Berlin. 

L. P. Lindeman and J. Q. Adams, Carbon-13 Nuclear Magnetic Resonance Spectrometry, Analytical Chemistry 43 1245-1252 (1971). 

The hydrocarbon ("oil") fraction of a coal pyrolysis tar prepared by open column liquid chromatography (LC) was separated into 16 subfractions by a second LC procedure. Low voltage mass spectrometry (MS), infrared spectroscopy (IR), and proton (PMR) as well as carbon-13 nuclear magnetic resonance spectrometry (CMR) were performed on the first 13 subfractions. Computerized multivariate analysis procedures such as factor analysis followed by canonical correlation techniques were used to extract the overlapping information from the analytical data. Subsequent evaluation of the integrated analytical data revealed chemical information which could not have been obtained readily from the individual spectroscopic techniques. The approach described is generally applicable to multisource analytical data on pyrolysis oils and other complex mixtures. 

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