||Characterization of Metal Binding Sites in Fulvic Acids by Lanthanide Ion Probe Spectroscopy.
Dobbs, J. C. ;
Susetyo, W. ;
Knight, F. E. ;
Castles, M. A. ;
Azarraga, L. V. ;
||Georgia Univ., Athens. Dept. of Chemistry.;Environmental Research Lab., Athens, GA. Office of Research and Development.
Humic acids ;
Rare earth elements ;
Least squares method ;
Fulvic acids ;
Binding sites ;
||Some EPA libraries have a fiche copy filed under the call number shown.
||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.)
||Pub. in Analytical Chemistry, v61 n5 p483-488, Mar 89. Sponsored by Environmental Research Lab., Athens, GA. Office of Research and Development.
|NTIS Title Notes
||Reprint: Characterization of Metal Binding Sites in Fulvic Acids by Lanthanide Ion Probe Spectroscopy.
||PC A02/MF A01