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CHARACTERIZATION OF METAL BINDING SITES IN FULVIC ACIDS BY LANTHANIDE ION PROBE SPECTROSCOPY
Citation:
Dobbs, J., W. Susetyo, F. Knight, M. Castles, L. Carreira, AND J. Azarraga. CHARACTERIZATION OF METAL BINDING SITES IN FULVIC ACIDS BY LANTHANIDE ION PROBE SPECTROSCOPY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-89/027.
Description:
Naturally occurring humic substances are known to be potentially strong binders of metals in the environment. ensitive spectroscopic technique, based on the unique luminescent properties of the tripositive lanthanide metal ions, has been developed to Selectively probe metal binding sites in humic substances. ontinuous multiple ligand model is proposed to describe complexation of metals with humic materials in terms of mean binding strength, distributions and concentrations. Experimental results as well as a simulation study that uses this model also are Presented.