Record Display for the EPA National Library Catalog

RECORD NUMBER: 735 OF 777

OLS Field Name OLS Field Data
Main Title Transition Metals of Impounded Waters.
Author Heis, John J. ;
CORP Author Georgia Inst. of Tech., Atlanta. Environmental Resources Center.
Year Published 1972
Report Number ERC-0172; DI-14-01-0001-1587; OWRR-B-023-GA; B-023-GA(1),; 01953
Stock Number PB-213 160
Additional Subjects ( Reservoirs ; Limnology) ; ( Iron ; Limnology) ; ( Manganese ; Limnology) ; ( Water pollution ; Metals) ; Concentration(Composition) ; Electron spin resonance ; Atomic spectroscopy ; Lake Allatoona ; Georgia ; Stratification ; Seasonal variations ; Water analysis ; Temperature gradients ; Solubility ; Spectrochemical analysis ; Hypolimnion ; Water pollution detection
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB-213 160 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 56p
Abstract
Seasonal cycles in the concentration and chemical form of transition metal ions in reservoir waters and stratifications of metal concentrations within the depth profiles have been documented. The changes in concentration of iron and manganese through the year with changes in temperature, acidity, and biotic activity are described. Particular attention was paid to time and depth differences in concentrations of certain valence states of manganese and iron by use of electron spin resonance (ESR) absorption and atomic absorption (AA) techniques. The results showed significant differences between the amount of manganese found by the two techniques at any one point. Iron proved to be unsuitable for ESR analysis. Some solid natural mineral deposits from Lake Allatoona in Georgia yielded complex ESR spectra that suggest that they are made up of some ferro-manganese complex.