Reaction of vanadate with aquatic humic substances: An ESR and (super 51)V NMR study
Article Abstract:
Electron spin resonance spectroscopy and nuclear magnetic resonance studies indicate that under acidic pH humic substances reduce vanadium (V) to vanadium (IV), with the vanadium(IV) ion bound to the oxygen donor at the carboxylic acid sites of the humic substances. At neutral pH, vanadate is stabilized with its binding to humic substances. The binding of vanadium to humic substances is determined by the concentration of vanadium and the pH of the medium.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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The Not-So-Big U.S. Carbon Sink
Article Abstract:
Atmospheric carbon emitted through human activities is stored in carbon sinks in oceans and terrestrial ecosystems. Two methods of quantifying the sinks are analyzed.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1999
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