It is well accepted that natural organic material (NOM) is the principal
precursors of disinfection byproducts (DBPs) during the treatment of drinking
water with chlorine. However, using NOM directly to explore the formation of DBPs
is impeded by the variety and unclarity of its structure. Instead, using a relatively
simple model compound such as hesperetin is thought to give out some insight in the incorporation of
chlorine. In order to
verify the hypothesis, hesperetin solution was chlorinated under varying conditions
and total organic halogen (TOX), DBPs formation, as well as ultraviolet (UV) absorbance were measured. The results
show that chloroform, monochloroacetic acid (MCAA), dichloroacetic acid (DCAA) and trichloroacetic acid (TCAA) consist of the majority of TOX. The
formation of chloroform increases with the increasing of pH, while the formation of
DCAA and TCAA is favored under low pH. The yields of TOX and the main DBPs
compound have a good relationship with the differential UV absorbance. All these
features were observed in the NOM. It can be concluded that the behavior of
hesperetin is similar with that of NOM during chlorination and it can serve as a
good model to study the mechanism and kinetics of DBP formation in future work.
Includes 6 references, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 470 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 13 |
| Published : | 11/01/2002 |
