Main Title |
Measurements of Binding Site Concentrations in Humic Substances. |
Author |
Perdue, E. M. ;
|
CORP Author |
Georgia Inst. of Tech., Atlanta. School of Geophysical Sciences.;Environmental Research Lab., Athens, GA. |
Year Published |
1988 |
Report Number |
EPA/600/D-88/090; |
Stock Number |
PB88-211727 |
Additional Subjects |
Humic acids ;
Metal complexes ;
Complex compounds ;
Ligands ;
Metal ions
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB88-211727 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
25p |
Abstract |
The use of thermodynamic models to calculate the effects of humic substances on metal speciation requires that the complexation capacity (CC) of the humic substance be determined. If the CC of a humic substance is viewed as a compositional rather than a thermodynamic property, then the conventional approaches toward experimental measurements and calculations of complexation capacities need to be reexamined. It is proposed here that the CC of a humic substance is approximately equivalent to its total exchangeable acidity and that the extent to which this CC can be realized in experimental measurements is strongly a function of pH, ionic strength, nature of the metal being complexed, and the concentration of humic substances used in the measurements. |
Supplementary Notes |
Sponsored by Environmental Research Lab., Athens, GA. |
PUB Date Free Form |
May 88 |
Category Codes |
99F |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
822518119 |
Origin |
NTIS |
Type |
CAT |