Reaction of Suwannee River fulvic acid with chloramine: characterization of products via 15N NMR
Article Abstract:
Chloramine has been examined as a disinfectant for municipal water supplies since it was found to produce significantly less toxic haloforms than conventional chlorination when reacting to humic substances. NMR spectroscopy of chloramine and ammonia reacting with fulvic acid in the Suwannee River produce evidence of the the formation of nitrogen compounds from the chloramination of dissolved organic matter. This represents a positive first step toward proving chloramine to be a significant improvement over chlorine.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1992
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15N NMR studies of nucleophilic addition reactions
Article Abstract:
The reaction kinetics of the reaction between 15N-labeled aniline and Suwannee River humic substances at pH 6 were investigated using 15N nuclear magnetic resonance spectroscopy. Aniline has transformed into anilinohydroquinone, anilinoquinone, anilide, imine and heterocyclic nitrogens via nucleophilic addition reactions. The reaction between aniline and fulvic acid was influenced by oxic conditions. Under anoxic conditions, the reaction resulted in a significant decrease in anilinoquinone nitrogen.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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pH-dependent binding of aluminum by a fulvic acid
Article Abstract:
The chemical characteristics of organic aluminum complexes in natural waters were investigated using the Suwanee fulvic acid. The results showed that pH governed the formation of organically bound aluminum. It was suggested that aluminum organic complexes make significant contributions to the acid-base chemistry of natural waters. Depending on the pH and total Al concentration, fulvic acid either combined with or facilitated the formation of polynuclear hydroxy-Al ions.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
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