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Water Res. 2003 Sep;37(15):3733-41.

A N-Nitrosodimethylamine (NDMA) precursor analysis for chlorination of water and wastewater.

Author information

1
Department of Civil and Environmental Engineering, University of California, 609 Davis Hall, Berkeley, CA 94720, USA.

Abstract

N-nitrosodimethylamine (NDMA) is a potent carcinogen formed during chloramination of water and wastewater treatment plant effluents. A procedure is described for quantifying the concentration of the organic precursors of NDMA that could be formed during chlorination of wastewaters and natural waters. The method involves applying a high dose of monochloramine to a pH-buffered sample followed by a 10-day contact period, during which the monochloramine decays at a rate unrelated to the composition of the sample. Analyses of samples of municipal wastewater effluents and surface waters indicate that the method provides a robust and reproducible measurement of NDMA precursors over a wide range of conditions. A sensitive GC/CI/MS/MS analytical procedure for dimethylamine also is described and used to demonstrate that NDMA formation during chlorination of wastewater and natural waters cannot be explained by dimethylamine concentrations alone.

PMID:
12867341
DOI:
10.1016/S0043-1354(03)00289-6
[Indexed for MEDLINE]

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