000190208 001__ 190208
000190208 005__ 20180317092022.0
000190208 0247_ $$2doi$$a10.1016/j.watres.2013.05.031
000190208 022__ $$a0043-1354
000190208 02470 $$2ISI$$a000324566400009
000190208 037__ $$aARTICLE
000190208 245__ $$aAnalysis of N-nitrosamines and other nitro(so) compounds in water by high-performance liquid chromatography with post-column UV photolysis/Griess reaction
000190208 260__ $$aOxford$$bElsevier$$c2013
000190208 269__ $$a2013
000190208 300__ $$a11
000190208 336__ $$aJournal Articles
000190208 520__ $$aDespite their potential carcinogenicity and probable formation during water disinfection processes, little is known about the occurrence of other nitro(so) compounds than a few specific N-nitroso compounds such as N-nitrosodimethylamine (NDMA). An analytical method was developed to monitor various nitro(so) compounds including N-nitrosamines based on the Griess colorimetric determination of nitrite generated by UV-254 nm photolysis of nitro(so) compounds after separation by HPLC (HPLC-Post Column UV-photolysis/Griess reaction (HPLC-PCUV)). To differentiate N-nitro(so) compounds (i.e. UV-labile) from other nitro(so) and N-containing compounds (i.e. UV-resistant), a pretreatment was established by photolyzing solid-phase extracted samples at 254 nm (1000 mJ/cm(2)) and thus removing N-nitro(so) compounds selectively. Considering a 1000-fold concentration factor and extraction efficiencies (57-83%) during solid phase extraction, the method detection limits ranged from 4 to 28 ng/L for dimethylnitramine and eight N-nitrosamines (EPA 8270 nine nitrosamines mixture except for N-nitrosodiphenylamine). For four pool waters, the UV-resistant groups accounted for more than 78% of the estimated total concentration of nitro(so) and other N-containing compounds (6.1-48.6 nM). Only one unknown UV-labile compound was detected in one pool water (2.0-7.9 nM). NDMA was most frequently detected and N-nitrosodipropylamine (NDPA) and N-nitrosodibutylamine (NDBA) were additionally detected in one pool water. Chloramination of a secondary wastewater effluent with NDMA (0.2 nM) and UV-resistant compounds (7.9 nM) from a pilot-scale municipal wastewater treatment plant led to a significant formation of not only unidentified UV-resistant compounds (67.8 nM) and UV-labile compounds (14.6 nM), but also identified nitrosamines such as NDMA (4.3 nM), N-nitrosopiperidine (1.8 nM), NDPA (0.5 nM), and NDBA (0.5 nM). Overall, the novel HPLC-PCUV system is a powerful screening tool for the detection of (un)known N-nitro(so) as well as other nitro(so) and UV-induced nitrite-producing compounds. (C) 2013 Published by Elsevier Ltd.
000190208 6531_ $$aN-nitrosamines
000190208 6531_ $$aN-nitrosodimethylamine (NDMA)
000190208 6531_ $$aNitro(so) compounds
000190208 6531_ $$aSwimming pool water
000190208 6531_ $$aHPLC post-column reaction
000190208 6531_ $$aGriess reaction
000190208 6531_ $$aWastewater
000190208 700__ $$0245981$$aLee, Minju$$g218927$$uEcole Polytech Fed Lausanne, Sch Architecture Civil & Environm Engn ENAC, CH-1015 Lausanne, Switzerland
000190208 700__ $$aLee, Yunho$$uEawag, Swiss Fed Inst Aquat Sci & Technol, CH-8600 Dubendorf, Switzerland
000190208 700__ $$aSoltermann, Fabian$$uEawag, Swiss Fed Inst Aquat Sci & Technol, CH-8600 Dubendorf, Switzerland
000190208 700__ $$0245482$$aVon Gunten, Urs$$g210253
000190208 773__ $$j47$$k14$$q4893-4903$$tWater Research
000190208 909CO $$ooai:infoscience.tind.io:190208$$pENAC$$particle
000190208 909C0 $$0252250$$pLTQE$$xU12400
000190208 917Z8 $$x106743
000190208 937__ $$aEPFL-ARTICLE-190208
000190208 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000190208 980__ $$aARTICLE