COMPARISON OF 2 THERMOCHEMOLYTIC METHODS FOR THE ANALYSIS OF LIGNIN IN DECOMPOSING GYMNOSPERM WOOD - THE CUO OXIDATION METHOD AND THE METHOD OF THERMOCHEMOLYSIS WITH TETRAMETHYLAMMONIUM HYDROXIDE (TMAH)
Pg. Hatcher et al., COMPARISON OF 2 THERMOCHEMOLYTIC METHODS FOR THE ANALYSIS OF LIGNIN IN DECOMPOSING GYMNOSPERM WOOD - THE CUO OXIDATION METHOD AND THE METHOD OF THERMOCHEMOLYSIS WITH TETRAMETHYLAMMONIUM HYDROXIDE (TMAH), Organic geochemistry, 23(10), 1995, pp. 881-888
Comparison of the new TMAH thermochemolysis procedure with the traditi
onal 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 re
gard to the yield of lignin monomers. Moreover, the TMAH procedure app
ears to be more sensitive for calculation of benzenecarboxylic acid/be
nzaldehyde (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.