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

被引：4
|
作者：
Andrzejewski, Przemyslaw [1 ]
Kasprzyk-Hordern, Barbara [1 ,2 ]
Nawrocki, Jacek [1 ]
机构：
[1] Adam Mickiewicz Univ, Fac Chem, Dept Water Treatment Technol, PL-60613 Poznan, Poland
[2] Univ Huddersfield, Dept Chem & Biol Sci, Sch Appl Sci, Huddersfield HD1 3DH, W Yorkshire, England
来源：
WATER RESEARCH | 2008年 / 42卷 / 4-5期
关键词：
N-nitrosodimethylamine; NDMA; DBPs; ozone; disinfection; water treatment;
D O I：
10.1016/j.watres.2007.08.032
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：863 / 870
页数：8
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