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RECORD NUMBER: 2 OF 15

OLS Field Name OLS Field Data
Main Title Characterization of Metal Binding Sites in Fulvic Acids by Lanthanide Ion Probe Spectroscopy.
Author Dobbs, J. C. ; Susetyo, W. ; Knight, F. E. ; Castles, M. A. ; Azarraga, L. V. ;
CORP Author Georgia Univ., Athens. Dept. of Chemistry.;Environmental Research Lab., Athens, GA. Office of Research and Development.
Publisher c1989
Year Published 1989
Report Number EPA-809989; EPA/600/J-89/027;
Stock Number PB90-100819
Additional Subjects Metals ; Humic acids ; Rare earth elements ; Probes ; Graphs(Charts) ; Luminescence ; Least squares method ; Reprints ; Fulvic acids ; Binding sites ; Ion spectroscopy
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB90-100819 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/10/1990
Collation 8p
Abstract
Naturally occurring humic substances are known to be potentially strong binders of metals in the environment. A sensitive 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. A continuous multiple ligand model is proposed to describe complexation of metals with humic materials in terms of mean binding strengths, distributions, and concentrations. Experimental results as well as a simulation study that uses the model also are presented. (Copyright (c) 1989 American Chemical Society.)