In this study, a fast and sensitive UFLC-MS/MS method was developed for quantitative analysis of nine N-nitrosamines and seven precursors in a single analysis. The method detection limits (MDLs) in natural water ranged from 0.05 to 1 �g/L without using solid phase extraction (SPE) pre-concentration procedures. The MDLs were further improved 2000 times after SPE. Three different types of activated carbon nano-particles (NPs) (bamboo, charcoal, and coconut shell as raw materials) were used to carry out removal experiments in two different pH buffers (pH 6.6 and 8.6). Coconut shell based activated carbon NPs were found to have higher removal efficiency than the other two activated carbon NPs. The method has been used to screen different types of water samples in the Missouri to correlate the concentrations of N-nitrosamine precursors and the levels of N-nitrosamines in drinking water.  The detailed experimental conditions and results will be presented at the conference.

Occurrence and removal of N-nitrosamines and their precursors in Missouri water treatment systems using UFLC-tandem MS

243rd National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.