Lignin phenolic structures in natural orgainc matter (NOM) were characterized by a modified version of the
classic alkali CuO oxidation method using HPLC. Vanillyl, syringyl and cinnamyl
family groups consist of three phenolic strcutres each, an aldehyde, a ketone, and a
carboxylic acid. Two types of commercially-available lignin materials were analyzed by
this method for lignin monomers. One lignin material exhibited both vanillyl and
syringyl units, while the other only produced vanillyl units. Laboratory chlorination of
the lignin polymers and the simple monomers allowed quantitative assessments of the
contribution of specific substructures to overall DBP formation. Most trihalomethane
and haloacetic acid formation appeared to be attributable to identified monomeric
constituents. In contrast, observed TOX formation far exceeded that which was
predicted from the alkaline CuO fragments. Includes 17 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 14 |
| Published : | 11/15/2004 |
