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

Andrzejewski, Przemyslav, Kasprzyk-Hordern, Barbara and Nawrocki, Jacek (2008) N-nitrosodimethylamine (NDMA) formation during ozonation of dimethylamine-containing waters. Water Research, 42 (4-5). pp. 863-870. ISSN 00431354

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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.

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Schools: School of Applied Sciences
School of Applied Sciences > Materials and Catalysis Research Centre
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Depositing User: Sara Taylor
Date Deposited: 30 Jun 2008 10:27
Last Modified: 11 Feb 2009 14:44
URI: http://eprints.hud.ac.uk/id/eprint/944

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