A solid phase extraction (SPE) and gas chromatography/mass spectrometer (GC/MS)
isolation and detection method for N-nitrosodimethylamine (NDMA), and other selected
nitrosamines in various water matrices (potable water, raw source water, reclaimed water, and
wastewater) is described. This work was performed as part of a larger project funded by the
WateReuse Foundation, entitled "Low Cost Analytical Methods for Measuring NDMA
Concentrations," in developing methods for nitrosamine analyses. Interest in testing for NDMA, a
probable human carcinogen, at low ng/L levels stems from recent concern over the concentration of
NDMA in various water supplies. The method described in this paper was shown to effectively
quantify NDMA and other nitrosamine compounds at or below a 1-ng/L minimum detection limit
(MDL). This method was also shown to accurately quantify nitrosamine concentrations in potable,
secondary and tertiary effluent water samples with excellent precision. Includes 9 references, tables, figures.