Aquatic environment

Determination of N-nitrosodimethylamine in drinking water by UPLC-MS/MS

Wanfeng Wang , Jianying Hu , Jianwei Yu , Min Yang


Received December 09, 2009,Revised February 23, 2010, Accepted , Available online

Volume 22,2010,Pages 1508-1512

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The method for detecting N-nitrosodimethylamine (NDMA) in drinking water using ultra performance liquid chromatography (UPLC) coupled with tandem mass spectrometry (MS/MS) was improved by optimizing the clean-up procedure to remove the matrix interference in pretreatment process, and was then applied to a survey of NDMA in both raw and finished water samples from five water treatment plants in South China. The NDMA concentrations ranged from 4.7 to 15.1 ng/L in raw water samples, and from 4.68 to 46.9 ng/L in finished water. The NDMA concentration in raw water was found to be related with nitrite concentration, and during the treatment, the NDMA concentration increased following ozonation but decreased after subsequent activated carbon treatment.

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