Prediction of N-nitrosodimethylamine (NDMA) formation as a disinfection by-product.
This study investigated the possibility of a statistical model application for the prediction of N-nitrosodimethylamine (NDMA) formation. The NDMA formation was studied as a function of monochloramine concentration (0.001-5mM) at fixed dimethylamine (DMA) concentrations of 0.01mM or 0.05mM. Excellent linear correlations were observed between the molar ratio of monochloramine to DMA and the NDMA formation on a log scale at pH 7 and 8. When a developed prediction equation was applied to a previously reported study, a good result was obtained. The statistical model appears to predict adequately NDMA concentrations if other NDMA precursors are excluded. Using the predictive tool, a simple and approximate calculation of NDMA formation can be obtained in drinking water systems.
Kim
Jongo
J
Department of Environmental Education, Mokpo National University, Muan-gun, Chungkye-myon, Chonnam 534-729, Republic of Korea. jongokim@mokpo.ac.kr
Clevenger
Thomas E
TE
D004128:Dimethylnitrosamine; D004203:Disinfection; D009602:Nitrosamines / Q000032:analysis*; D011237:Predictive Value of Tests; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*; D014881:Water Supply / Q000592:standards*
D009602:Nitrosamines; D014874:Water Pollutants, Chemical; D004128:Dimethylnitrosamine