Format

Send to:

Choose Destination
See comment in PubMed Commons below
Water Res. 2008 Feb;42(4-5):863-70. Epub 2007 Sep 7.

N-nitrosodimethylamine (NDMA) formation during ozonation of dimethylamine-containing waters.

Author information

  • 1Department of Water Treatment Technology, Faculty of Chemistry, Adam Mickiewicz University, ul. Drzymały 24, 60-613 Poznań, Poland. pandrz@amu.edu.pl <pandrz@amu.edu.pl>

Abstract

Ozonation of aqueous solutions of dimethylamine (DMA) leads to the formation of nitrosodimethylamine (NDMA). The yield of reaction is low (below 0.4% in relation to DMA) and increases with increasing pH. Contact time, ozone/DMA ratio and radical scavengers are other variables controlling the yield of reaction. Data from the literature and observed ozonation by-products suggest that nitrosation of DMA might be responsible for nitrosamine generation. NDMA can be recognized as a by-product of ozonation of DMA in water, which is formed in a specific, but reasonable, range of ozone/DMA ratios. The reaction may have potential importance for water treatment technology assuming reasonable micrograms per liter of DMA concentrations in raw waters.

PMID:
17904190
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk