Record Display for the EPA National Library Catalog

RECORD NUMBER: 6 OF 6

OLS Field Name OLS Field Data
Main Title Novel Approach to Metal-Humic Complexation Studies by Lanthanide Ion Probe Spectroscopy.
Author Dobbs, J. C. ; Susetyo, W. ; Knight, F. E. ; Castles, M. A. ; Azarraga, L. V. ;
CORP Author Environmental Research Lab., Athens, GA.;Georgia Univ., Athens. Dept. of Chemistry.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/252; EPA-R-809989;
Stock Number PB90-135518
Additional Subjects Metal complexes ; Humic acids ; Complex compounds ; Lanthanum ; Spectroscopic analysis ; Ions ; pH ; Chelates ; Chemical bonds ; Chemical analysis ; Equations ; Coordination compounds ; Luminesence ; Ligands ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB90-135518 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/15/1990
Collation 19p
Abstract
Naturally occurring humic substances are known to be potentially strong binders of metals in terrestrial and aquatic environments. A sensitive spectroscopic technique, based on the unique luminescence properties of the tripositive lanthanide metal ions, has been developed to selectively probe metal binding sites in humic substances. A continuous, multiligand, pH-dependent ligand model is proposed to describe complexation of metals with humic materials in terms of mean binding strengths, distributions, and concentrations. (Copyright (c) 1989 Gordon and Breach, Science Publishers, Inc.)