The literature reports significantly different patterns
for haloacetic acid (HAA) formation kinetics during
chloramination. This study systematically examines the
routes of HAA formation and elucidates the cause(s)
behind the inconsistencies and discrepancies reported
for HAA formation patterns.
Until now, it has been generally accepted that free
chlorine that formed as a result of monochloramine
decomposition was responsible for most of the HAA
formation in chloraminated water. However, laboratory
experiments conducted in this research indicated
that the direct reaction of monochloramine
with dissolved organic matter plays the major role in
HAA formation during chloramination. In addition,
the authors showed that the use of ammonia chloride,
which is recommended by the U.S. Environmental
Protection Agency as a quenching agent in method
552.3, may lead to overestimations of HAA concentrations
in chloraminated water samples. Study findings
should prove useful in devising HAA control
strategies and developing mechanistic or empirical
models of HAA formation. Includes 41 references, tables, figures.
| Edition : | Vol. 99 - No. 8 |
| File Size : | 1
file
, 420 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 13 |
| Published : | 08/01/2007 |
