Record Display for the EPA National Library Catalog

RECORD NUMBER: 11 OF 22

OLS Field Name OLS Field Data
Main Title Precipitation of Metal-Humate Complexes (Journal Version).
Author Pagenkopf, Gordon K. ; Whitworth, C. ;
CORP Author Montana State Univ., Bozeman. Dept. of Chemistry.
Year Published 1981
Report Number EPA-R-803727; EPA-600/J-81-638;
Stock Number PB83-243774
Additional Subjects Complex compounds ; Humic acids ; Chelating agents ; Precipitation(Chemistry) ; Magnesium ; Metals ; Sea water ; Reaction kinetics ; Cations ; Concentration(Composition) ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB83-243774 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 7p
Abstract
Concentrations of magnesium found in sea water are capable of precipitating cadmium humate from water solution. Speciation calculations and kinetic considerations indicate that dissociation of the cadmium complexes occurs during the precipitation process. For a sequence of divalent metal cations, lead is the most effective precipitator of humic acid, whereas magnesium is least effective. The order is lead > copper > cadmium > barium > zinc > nickel > calcium > strontium > magnesium.