Record Display for the EPA National Library Catalog


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
Library Call Number Additional Info Location Last
NTIS  PB90-100819 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 03/10/1990
Collation 8p
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.)