Comparison of two thermochemolytic methods for the analysis of lignin in decomposing gymnosperm wood: the CuO oxidation method and the method of thermochemolysis with tetramethylammonium hydroxide (TMAH)

Comparison of two thermochemolytic methods for the analysis of lignin in decomposing gymnosperm wood: the CuO oxidation method and the method of thermochemolysis with tetramethylammonium hydroxide (TMAH)

Comparison of the new TMAH thermochemolysis procedure with the traditional CuO oxidation procedure for lignin characterization in gymnosperm wood and soil formed from degraded gymnosperm wood indicates that an excellent agreement exists between the two methods, especially with regard to the yield of...

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Bibliographic Details
Published in:Organic geochemistry Vol. 23; no. 10; pp. 881 - 888
Main Authors: Hatcher, Patrick G., Nanny, Mark A., Minard, Robert D., Dible, Scott D., Carson, Daniel M.
Format: Journal Article
Language:English
Published: Oxford Elsevier Ltd 01-10-1995
Elsevier Science
Subjects:
CuO oxidation
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochemistry
gymnosperm wood
lignin
Soil and rock geochemistry
Soils
Surficial geology
TMAH thermochemolysis
North America
Western Canada
British Columbia
lignin
CuO oxidation
gymnosperm wood
TMAH thermochemolysis
experimental studies
oxides
gymnosperms
oxidation
thermochemical properties
nuclear magnetic resonance
hydroxides
acids
C-13
modern
ion chromatography
copper
Spermatophyta
wood
soils
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Summary:Comparison of the new TMAH thermochemolysis procedure with the traditional CuO oxidation procedure for lignin characterization in gymnosperm wood and soil formed from degraded gymnosperm wood indicates that an excellent agreement exists between the two methods, especially with regard to the yield of lignin monomers. Moreover, the TMAH procedure appears to be more sensitive for calculation of benzenecarboxylic acid/benzaldehyde ( Ad Al ) ratios, displaying a larger dynamic range than that observed by CuO oxidation. If one considers the simplicity with which the TMAH procedure is carried out, this technique is much more suited to routine analyses of large numbers of samples.
ISSN:0146-6380
1873-5290
DOI:10.1016/0146-6380(95)00087-9