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RECORD NUMBER: 23 OF 66

OLS Field Name OLS Field Data
Main Title Extent of Ozone's Reaction with Isolated Aquatic Fulvic Acid.
Author Anderson, L. J. ; Johnson, J. D. ; Christman, R. F. ;
CORP Author North Carolina Univ. at Chapel Hill. Dept. of Environmental Sciences and Engineering.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1986
Report Number EPA/600/J-86/389;
Stock Number PB88-101589
Additional Subjects Ozonization ; Water treatment ; Chemical reactions ; Ultraviolet absorbers ; Chromatography ; Carbon ; Nucleophilic reactions ; North Carolina ; Reprints ; Fulvic acids ; Aquatic ecosystems ; Ultrafiltration ; Total organic carbon
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB88-101589 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 7p
Abstract
Samples of North Carolina aquatic fulvic acid were ozonated in a neutral buffer at several ozone/carbon ratios, and the reaction mixtures were characterized by using total organic carbon (TOC) and UV-visible absorbance analysis, XAD-8 chromatography, and ultrafiltration. Results show a large initial ozone consumption with loss of TOC and UV-visible absorbance by the fulvic acid solution followed by a slower rate of ozone consumption and decrease in TOC and UV-visible absorbance at higher doses. Exclusion chromatography and ultrafiltration show an increase in smaller sized materials. The authors conclude that ozone initially and rapidly attacks sensitive nucleophilic sites on the molecule. At higher doses slower cleavage reactions produce structural changes in the macromolecule. (Copyright (c) 1986 American Chemical Society.)