Assessing the Fate of Nitrosamine Precursors in Wastewater Treatment by Physicochemical Fractionation

publication · 7 years ago
by Martin Krauss, Philipp Longree, Emmanuel van Houtte, Johan Cauwenberghs, Juliane Hollender (Eawag, Swiss Federal Institute of Aquatic Science and Technology)
Source control or elimination of precursors of NDMA and other nitrosamines in waste water requires information on their physicochemical properties, which is still limited. Thus we developed a multistep fractionation method based on a combination of consecutive filtration steps to <1 μm, <0.2 μm, and <2.5 kDa followed by solid-phase extraction on a C18 column and validated it using model NDMA precursors covering a wide polarity range. The membrane filtration to 98% of all precursors.
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