Ultraviolet irradiation effects incorporation of nitrate and nitrite nitrogen into aquatic natural organic matter

Journal of Environmental Quality
Kevin A Thorn, Larry G Cox

Abstract

One of the concerns regarding the safety and efficacy of ultraviolet radiation for treatment of drinking water and wastewater is the fate of nitrate, particularly its photolysis to nitrite. In this study, N NMR was used to establish for the first time that UV irradiation effects the incorporation of nitrate and nitrite nitrogen into aquatic natural organic matter (NOM). Irradiation of (15)N-labeled nitrate in aqueous solution with an unfiltered medium pressure mercury lamp resulted in the incorporation of nitrogen into Suwannee River NOM (SRNOM) via nitrosation and other reactions over a range of pH from approximately 3.2 to 8.0, both in the presence and absence of bicarbonate, confirming photonitrosation of the NOM. The major forms of the incorporated label include nitrosophenol, oxime/nitro, pyridine, nitrile, and amide nitrogens. Natural organic matter also catalyzed the reduction of nitrate to ammonia on irradiation. The nitrosophenol and oxime/nitro nitrogens were found to be susceptible to photodegradation on further irradiation when nitrate was removed from the system. At pH 7.5, unfiltered irradiation resulted in the incorporation of (15)N-labeled nitrite into SRNOM in the form of amide, nitrile, and pyridine nitrogen. ...Continue Reading

References

Jul 1, 1984·Chemical & Pharmaceutical Bulletin·J SuzukiS Suzuki
Dec 15, 1995·The Biochemical Journal·Y KonoY Sawa
Apr 21, 2004·Proceedings of the National Academy of Sciences of the United States of America·K Schmidt-RohrD C Olk
Jul 21, 2004·Environmental Science & Technology·James ThomsonFelicity A Roddick
Sep 2, 2004·Water Environment Research : a Research Publication of the Water Environment Federation·Anping ZhengRichard G Luthy
Mar 19, 2005·Environmental Science & Technology·Davide VioneEzio Pelizzetti
Nov 22, 2005·Environmental Science & Technology·Markus J H TelscherAndreas Schäffer
Jan 1, 1949·Journal of Bacteriology·W Segal, P W Wilson
Jul 13, 2006·Environmental Science & Technology·Davide VioneCecilia Arsene
Sep 26, 2006·Chemosphere·Claudio MineroDavide Vione
Nov 6, 2008·Environmental Science & Technology·Linda S GaulkeH David Stensel
Jan 15, 2009·Journal of Pineal Research·Michael Kirsch, Herbert de Groot
Feb 24, 2009·Environmental Pollution·Haifeng ZhangSebastian Zuehlke
Dec 10, 2009·Environmental Science & Technology·Serge ChironHélène Fenet
Feb 10, 2010·Proceedings of the National Academy of Sciences of the United States of America·Mohamad SleimanHugo Destaillats
Sep 14, 2010·Journal of Environmental Quality·Kevin A ThornLarry G Cox
Oct 20, 2010·Environmental Science & Technology·Emmanuel F OlasehindeHiroshi Sakugawa

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Citations

Jun 24, 2015·Water Research·Daekyun KimTanju Karanfil
Jun 20, 2014·The Science of the Total Environment·Akira WatanabeRudolf Jaffé
May 14, 2016·PloS One·Kevin A Thorn, Larry G Cox
Aug 4, 2018·Environmental Science & Technology·Guoyang ZhangShujuan Zhang

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