Hydrolysis and dehalogenation of trihaloacetaldehydes

Yuefeng Xie, David A. Reckhow

Research output: Chapter in Book/Report/Conference proceedingChapter

10 Citations (SciVal)


The aqueous stability of three brominated trihaloacetaldehydes (THAs), bromodichloroacetaldehyde, chlorodibromoacetaldehyde, and tribromoacetaldehyde, was studied. All three brominated THAs were found to undergo rapid hydrolysis at high pHs fanning trihalomethanes (THMs). The hydrolysis rate can be expressed as -d[THA]/dt = kott[THA][OH-]0.5. A rapid dehalogenation of these THAs was also found in the presence of sulfite over a range of pHs. The dehalogenation rate can be expressed as -[THA)/dt = k1[THA] [HS03 -1 + k2[THA][SOl-J. These results indicate that THAs are unstable in alkaline drinking waters. The authors also recommend that high pH and sulfite quenching should be avoided during THA analysis.

Original languageEnglish (US)
Title of host publicationDisinfection by-Products in Water Treatment
Subtitle of host publicationThe Chemistry of their Formation and Control
PublisherCRC Press
Number of pages9
ISBN (Electronic)9781351454858
ISBN (Print)9781566701365
StatePublished - Jan 1 2017

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Environmental Science


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