The relative contributions of aromaticity, conjugation and functional group chemistry to
specific ultraviolet (UV) absorbance (SUVA), reactions of chlorine with natural organic matter (NOM) and the
formation of disinfection byproducts (DBPs) was investigated using model compounds. Conjugation
was found to contribute significantly to SUVA, which does not support the assumption that SUVA is
simply a measure of aromaticity. Resorcinol, ferulic acid and salicylic acid produced high concentrations
of chloroform when chlorinated, which suggests that structures similar to these in NOM may be
responsible for the production of chloroform when natural waters are chlorinated. The differential UV
spectra of the model compounds were much more complex than NOM. The relationship between
differential UV absorbance and chloroform production of the model compounds and NOM differed. This
suggested that structures that contribute significantly to the production of chloroform in NOM may not
contribute significantly to the differential UV absorbance, and vice versa. High performance size
exclusion chromatography of the compounds after chlorination showed peaks attributed to unknown
DPBs common to most of the model compounds. Includes 27 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 400 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 17 |
| Published : | 11/02/2003 |
